Discussion:
[N8VEM-S100:7620] PIC32 Ascii Terminal
Gary Kaufman
2015-09-24 01:45:32 UTC
Permalink
I had a small batch of PC boards made up for the PIC32 Ascii Terminal from
http://geoffg.net/terminal.html

In order to justify a small run of the boards for my use I had 10 PCB's
fabricated in China. I also purchased a PICKIT3 to program up the
microcontrollers.

The boards are directly from the Gerber's on Geoff's site, and I've
collected up a "mini-kit" of the unique parts:

Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector

Most of the remaining parts are common and likely already in your parts
bin.

I have 4 PC boards and "mini-kits" left if anyone is interested. $32
including priority mail postage in the USA to basically cover my costs.

- Gary
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l***@mchsi.com
2015-09-24 01:57:37 UTC
Permalink
Gary,

I will buy in on this !

LMK your PayPal Addy

Todd


----- Original Message -----
From: "Gary Kaufman" <***@gmail.com>
To: "N8VEM-S100" <n8vem-***@googlegroups.com>
Sent: Wednesday, September 23, 2015 8:45:32 PM
Subject: [N8VEM-S100:7620] PIC32 Ascii Terminal

I had a small batch of PC boards made up for the PIC32 Ascii Terminal from
http://geoffg.net/terminal.html

In order to justify a small run of the boards for my use I had 10 PCB's
fabricated in China. I also purchased a PICKIT3 to program up the
microcontrollers.

The boards are directly from the Gerber's on Geoff's site, and I've
collected up a "mini-kit" of the unique parts:

Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector

Most of the remaining parts are common and likely already in your parts
bin.

I have 4 PC boards and "mini-kits" left if anyone is interested. $32
including priority mail postage in the USA to basically cover my costs.

- Gary
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Gary Kaufman
2015-09-24 02:18:16 UTC
Permalink
Todd -

I think you'll enjoy it, it's a cute litter board and works nicely.

I'm ***@the-planet.org for Paypal, please send as "friends/family"
or include enough extra to cover the paypal fees.
I'll need a shipping address.

Thanks,

- Gary
Post by l***@mchsi.com
Gary,
I will buy in on this !
LMK your PayPal Addy
Todd
----- Original Message -----
Sent: Wednesday, September 23, 2015 8:45:32 PM
Subject: [N8VEM-S100:7620] PIC32 Ascii Terminal
I had a small batch of PC boards made up for the PIC32 Ascii Terminal from
http://geoffg.net/terminal.html
In order to justify a small run of the boards for my use I had 10 PCB's
fabricated in China. I also purchased a PICKIT3 to program up the
microcontrollers.
The boards are directly from the Gerber's on Geoff's site, and I've
Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector
Most of the remaining parts are common and likely already in your parts
bin.
I have 4 PC boards and "mini-kits" left if anyone is interested. $32
including priority mail postage in the USA to basically cover my costs.
- Gary
--
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Robert Greenstreet
2015-09-24 02:36:51 UTC
Permalink
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<P>Hello Gary,</P>
<P>I'd like&nbsp;one.</P>
<P>Where do I send the money?</P>
<P>Thank you,</P>
<P>Robert Greenstreet<BR><BR></P>
<BLOCKQUOTE style="FONT-SIZE: 10pt; TEXT-DECORATION: none; FONT-FAMILY: arial,sans-serif; FONT-WEIGHT: normal; COLOR: black; FONT-STYLE: normal; PADDING-LEFT: 5px; MARGIN-LEFT: 0px; BORDER-LEFT: #0000ff 2px solid">-----Original Message----- <BR>From: Gary Kaufman <***@GMAIL.COM><BR>Sent: Sep 23, 2015 8:45 PM <BR>To: N8VEM-S100 <N8VEM-***@GOOGLEGROUPS.COM><BR>Subject: [N8VEM-S100:7620] PIC32 Ascii Terminal <BR><BR>
<DIV dir=ltr>I had a small batch of PC boards made up for the PIC32 Ascii Terminal from <A href="http://geoffg.net/terminal.html" target=_blank>http://geoffg.net/terminal.html<BR></A><BR>In order to justify a small run of the boards for my use I had 10 PCB's fabricated in China.&nbsp; I also purchased a PICKIT3 to program up the microcontrollers.<BR><BR>The boards are directly from the Gerber's on Geoff's site, and I've collected up a "mini-kit" of the unique parts:<BR><BR>Bare PCB with silk screening and solder mask<BR>PIC32 (programmed)<BR>27pf Caps x 2<BR>Microchip LDO Voltage Regulator<BR>Mill-Max IC Socket (28 pin)<BR>USB Connector<BR>Keyboard DIN connector<BR>8mhz xtal<BR>82 ohm resistor<BR>Composite Video Connector<BR><BR>Most of the remaining parts are common and likely already in your parts bin.&nbsp; <BR><BR>I have 4 PC boards and "mini-kits" left if anyone is interested.&nbsp; $32 including priority mail postage in the USA to basically cover my costs.<BR><BR>- Gary<BR><BR><BR><BR>&nbsp;<BR></DIV>
<P></P>-- <BR>You received this message because you are subscribed to the Google Groups "N8VEM-S100" group.<BR>To unsubscribe from this group and stop receiving emails from it, send an email to <A href="mailto:n8vem-s100+***@googlegroups.com" target=_blank>n8vem-s100+***@googlegroups.com</A>.<BR>For more options, visit <A href="https://groups.google.com/d/optout" target=_blank>https://groups.google.com/d/optout</A>.<BR></BLOCKQUOTE></BODY>

<p></p>

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Robert Greenstreet
2015-09-24 02:43:09 UTC
Permalink
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<P>Hi Gary,</P>
<P>I just saw your email to Todd. My address is:</P>
<P>Robert Greenstreet</P>
<P>PO Box 1051</P>
<P>Lake Geneva, WI 53147</P>
<P>I will try to send money tomorrow after work.</P>
<P>Thank you,</P>
<P>Robert Greenstreet<BR><BR></P>
<BLOCKQUOTE style="FONT-SIZE: 10pt; TEXT-DECORATION: none; FONT-FAMILY: arial,sans-serif; FONT-WEIGHT: normal; COLOR: black; FONT-STYLE: normal; PADDING-LEFT: 5px; MARGIN-LEFT: 0px; BORDER-LEFT: #0000ff 2px solid">-----Original Message----- <BR>From: Gary Kaufman <***@GMAIL.COM><BR>Sent: Sep 23, 2015 8:45 PM <BR>To: N8VEM-S100 <N8VEM-***@GOOGLEGROUPS.COM><BR>Subject: [N8VEM-S100:7620] PIC32 Ascii Terminal <BR><BR>
<DIV dir=ltr>I had a small batch of PC boards made up for the PIC32 Ascii Terminal from <A href="http://geoffg.net/terminal.html" target=_blank>http://geoffg.net/terminal.html<BR></A><BR>In order to justify a small run of the boards for my use I had 10 PCB's fabricated in China.&nbsp; I also purchased a PICKIT3 to program up the microcontrollers.<BR><BR>The boards are directly from the Gerber's on Geoff's site, and I've collected up a "mini-kit" of the unique parts:<BR><BR>Bare PCB with silk screening and solder mask<BR>PIC32 (programmed)<BR>27pf Caps x 2<BR>Microchip LDO Voltage Regulator<BR>Mill-Max IC Socket (28 pin)<BR>USB Connector<BR>Keyboard DIN connector<BR>8mhz xtal<BR>82 ohm resistor<BR>Composite Video Connector<BR><BR>Most of the remaining parts are common and likely already in your parts bin.&nbsp; <BR><BR>I have 4 PC boards and "mini-kits" left if anyone is interested.&nbsp; $32 including priority mail postage in the USA to basically cover my costs.<BR><BR>- Gary<BR><BR><BR><BR>&nbsp;<BR></DIV>
<P></P>-- <BR>You received this message because you are subscribed to the Google Groups "N8VEM-S100" group.<BR>To unsubscribe from this group and stop receiving emails from it, send an email to <A href="mailto:n8vem-s100+***@googlegroups.com" target=_blank>n8vem-s100+***@googlegroups.com</A>.<BR>For more options, visit <A href="https://groups.google.com/d/optout" target=_blank>https://groups.google.com/d/optout</A>.<BR></BLOCKQUOTE></BODY>

<p></p>

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James Cobb
2015-09-24 02:55:54 UTC
Permalink
I’ll take one if any are left.

Jim
James Cobb
445 Caracas Dr.
Merritt Island. FL 32953

From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of Gary Kaufman
Sent: Wednesday, September 23, 2015 9:46 PM
To: N8VEM-S100
Subject: [N8VEM-S100:7620] PIC32 Ascii Terminal

I had a small batch of PC boards made up for the PIC32 Ascii Terminal from http://geoffg.net/terminal.html

In order to justify a small run of the boards for my use I had 10 PCB's fabricated in China. I also purchased a PICKIT3 to program up the microcontrollers.

The boards are directly from the Gerber's on Geoff's site, and I've collected up a "mini-kit" of the unique parts:

Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector

Most of the remaining parts are common and likely already in your parts bin.

I have 4 PC boards and "mini-kits" left if anyone is interested. $32 including priority mail postage in the USA to basically cover my costs.

- Gary
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Gary Kaufman
2015-09-24 11:05:49 UTC
Permalink
All boards are spoken for, thanks!

If there's a strong interest I'd consider another run of boards and
programmed pic32's.

- Gary
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Todd Goodman
2015-09-25 00:35:37 UTC
Permalink
Hi Gary,

I'd be in for a couple if you do another run.

Thanks,

Todd
Post by Gary Kaufman
All boards are spoken for, thanks!
If there's a strong interest I'd consider another run of boards and
programmed pic32's.
- Gary
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Gary Kaufman
2015-09-25 00:55:08 UTC
Permalink
Todd -

I'll start a list, if we get to 10 I'll order another batch...

- Gary
Post by Robert Greenstreet
Hi Gary,
I'd be in for a couple if you do another run.
Thanks,
Todd
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Don Caprio
2015-09-25 01:59:07 UTC
Permalink
You can put me down for 2.
Post by Gary Kaufman
Todd -
I'll start a list, if we get to 10 I'll order another batch...
- Gary
Post by Robert Greenstreet
Hi Gary,
I'd be in for a couple if you do another run.
Thanks,
Todd
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yoda
2015-09-25 03:08:21 UTC
Permalink
Put me down for 2 also.

Thanks

Dave
Post by Gary Kaufman
Todd -
I'll start a list, if we get to 10 I'll order another batch...
- Gary
Post by Robert Greenstreet
Hi Gary,
I'd be in for a couple if you do another run.
Thanks,
Todd
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Bob Bell
2015-09-25 20:24:04 UTC
Permalink
Gary, I understand you are the one with the PIC32 ASCII terminal.
I am interested in getting one board, hopefully with the "critical" components too.
Please add me to your list.

Thanks!

Bob Bell


-----Original Message-----
From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of Gary Kaufman
Sent: Thursday, September 24, 2015 8:55 PM
To: n8vem-***@googlegroups.com
Subject: Re: [N8VEM-S100:7631] Re: PIC32 Ascii Terminal

Todd -

I'll start a list, if we get to 10 I'll order another batch...

- Gary
Post by Robert Greenstreet
Hi Gary,
I'd be in for a couple if you do another run.
Thanks,
Todd
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G. Beat
2015-09-25 20:38:14 UTC
Permalink
I would be interested in at least one board and PIC.

greg
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Malcom Ramey
2015-09-25 20:59:26 UTC
Permalink
Please put me down for 2.

Thanks,

Malcom
Post by Gary Kaufman
Todd -
I'll start a list, if we get to 10 I'll order another batch...
- Gary
Post by Robert Greenstreet
Hi Gary,
I'd be in for a couple if you do another run.
Thanks,
Todd
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Bob Bell
2015-09-24 13:17:43 UTC
Permalink
I was too late on your initial announcement,  and would like to be on your wait list for the next run.  Thanks. 
Bob Bell



Sent from somewhere in the Galaxy...

-------- Original message --------
From: Gary Kaufman <***@gmail.com>
Date: 2015/09/24 7:05 AM (GMT-05:00)
To: N8VEM-S100 <n8vem-***@googlegroups.com>
Subject: [N8VEM-S100:7625] Re: PIC32 Ascii Terminal


All boards are spoken for, thanks!

If there's a strong interest I'd consider another run of boards and programmed pic32's.

- Gary
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Dylan McNamee
2015-09-24 13:35:00 UTC
Permalink
I've got two of these boards (and the PIC32 controllers) left over from
an order of 10 I placed a while ago on behalf of the PiDP/8 community.
I don't have any of the hardware left, so you'd be on your own to round
those up. I'd be happy to sell these two for $12 each including shipping.

I've built two of them, and they work impressively well. Bob, James, are
you interested?

best,
dylan
--
I was too late on your initial announcement, and would like to be on your
wait list for the next run. Thanks.
Bob Bell
Sent from somewhere in the Galaxy...
-------- Original message --------
Date: 2015/09/24 7:05 AM (GMT-05:00)
Subject: [N8VEM-S100:7625] Re: PIC32 Ascii Terminal
All boards are spoken for, thanks!
If there's a strong interest I'd consider another run of boards and programmed pic32's.
- Gary
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Crusty OMO
2015-09-24 21:58:17 UTC
Permalink
Hi Dylan,

I would like to put my name on one of those please.
Please let me know the shipping cost to Toronto, Canada,
Email me by removing the 7's

***@hotmail.com

Thanks,
Josh Bensadon



Date: Thu, 24 Sep 2015 06:35:00 -0700
From: ***@gmail.com
To: n8vem-***@googlegroups.com
CC: ***@gmail.com
Subject: Re: [N8VEM-S100:7627] Re: PIC32 Ascii Terminal

I've got two of these boards (and the PIC32 controllers) left over from an order of 10 I placed a while ago on behalf of the PiDP/8 community.I don't have any of the hardware left, so you'd be on your own to round those up. I'd be happy to sell these two for $12 each including shipping.
I've built two of them, and they work impressively well. Bob, James, are you interested?
best,dylan--
On Thursday, September 24, 2015 at 6:17:55 AM UTC-7, Bob Bell wrote:I was too late on your initial announcement, and would like to be on your wait list for the next run. Thanks. Bob Bell


Sent from somewhere in the Galaxy...


-------- Original message --------
From: Gary Kaufman <***@gmail.com>
Date: 2015/09/24 7:05 AM (GMT-05:00)
To: N8VEM-S100 <***@googlegroups.com>
Subject: [N8VEM-S100:7625] Re: PIC32 Ascii Terminal



All boards are spoken for, thanks!

If there's a strong interest I'd consider another run of boards and programmed pic32's.

- Gary
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Dylan McNamee
2015-09-24 23:12:46 UTC
Permalink
Josh,

Shoot, two folks already claimed the two I had.

Sorry about that!
dylan
Post by Crusty OMO
Hi Dylan,
I would like to put my name on one of those please.
Please let me know the shipping cost to Toronto, Canada,
Email me by removing the 7's
Thanks,
Josh Bensadon
------------------------------
Date: Thu, 24 Sep 2015 06:35:00 -0700
Subject: Re: [N8VEM-S100:7627] Re: PIC32 Ascii Terminal
I've got two of these boards (and the PIC32 controllers) left over from
an order of 10 I placed a while ago on behalf of the PiDP/8 community.
I don't have any of the hardware left, so you'd be on your own to round
those up. I'd be happy to sell these two for $12 each including shipping.
I've built two of them, and they work impressively well. Bob, James, are you interested?
best,
dylan
--
I was too late on your initial announcement, and would like to be on your
wait list for the next run. Thanks.
Bob Bell
Sent from somewhere in the Galaxy...
-------- Original message --------
Date: 2015/09/24 7:05 AM (GMT-05:00)
Subject: [N8VEM-S100:7625] Re: PIC32 Ascii Terminal
All boards are spoken for, thanks!
If there's a strong interest I'd consider another run of boards and programmed pic32's.
- Gary
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John Monahan
2015-09-25 02:00:12 UTC
Permalink
Hi Gary,

Just about to order the blank chips from Mouser. However the PIC32MX250F128 listed here:-

http://www.mouser.com/ProductDetail/Microchip-Technology/PIC32MX250F128B-I-SP/?qs=hort8UWU32oXjSTLDKUD8A%3D%3D



seems wider than on the circuit board in Geoff’s article. Do I have the wrong one. Will also order a programmer.



I’m try to figure out if I go that route on the SBC-Z80 board what would be the best way to get data to and from the S100 bus itself. If I understand it correctly I would have to have a serial port/chip on the board. Is the “TTL Serial” (pins 5 & 6) compatible with say a 5V Zilog 8530. When you add that as well as buffers etc. the board circuit real estate mounts up. What would be nice if a PIC with a parallel port type pins was programmed/set up to go directly to a local bidirectional board bus as I have with the propeller circuit.



BTW, I’m having problems at the moment getting the Propeller circuit to recognize/output characters. There are a number of minor errors on the board. I will outline to you in a day or two still a work in progress!



John







From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of Gary Kaufman
Sent: Wednesday, September 23, 2015 6:46 PM
To: N8VEM-S100
Subject: [N8VEM-S100:7620] PIC32 Ascii Terminal



I had a small batch of PC boards made up for the PIC32 Ascii Terminal from http://geoffg.net/terminal.html

In order to justify a small run of the boards for my use I had 10 PCB's fabricated in China. I also purchased a PICKIT3 to program up the microcontrollers.

The boards are directly from the Gerber's on Geoff's site, and I've collected up a "mini-kit" of the unique parts:

Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector

Most of the remaining parts are common and likely already in your parts bin.

I have 4 PC boards and "mini-kits" left if anyone is interested. $32 including priority mail postage in the USA to basically cover my costs.

- Gary
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Bob Bell
2015-09-25 02:23:59 UTC
Permalink
The PDIP diagram on the Mouser web page you reference does indeed appear to be a wide package, but it says Images are for reference only. Now click the DataSheet and look at the SPDIP dimensions at the bottom of page 1: 1.365 x 0.285 x 0.135 inches. This is actually a 0.3 inch wide 28 pin package, as we see on the photos on Geoff’s Project page.



I’m looking forward to building this and having a backup for my Heathkit H-19 that uses “modern” keyboard and VGA display.



Bob Bell





From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of John Monahan
Sent: Thursday, September 24, 2015 10:00 PM
To: n8vem-***@googlegroups.com
Subject: RE: [N8VEM-S100:7633] PIC32 Ascii Terminal



Hi Gary,

Just about to order the blank chips from Mouser. However the PIC32MX250F128 listed here:-

http://www.mouser.com/ProductDetail/Microchip-Technology/PIC32MX250F128B-I-SP/?qs=hort8UWU32oXjSTLDKUD8A%3D%3D



seems wider than on the circuit board in Geoff’s article. Do I have the wrong one. Will also order a programmer.



I’m try to figure out if I go that route on the SBC-Z80 board what would be the best way to get data to and from the S100 bus itself. If I understand it correctly I would have to have a serial port/chip on the board. Is the “TTL Serial” (pins 5 & 6) compatible with say a 5V Zilog 8530. When you add that as well as buffers etc. the board circuit real estate mounts up. What would be nice if a PIC with a parallel port type pins was programmed/set up to go directly to a local bidirectional board bus as I have with the propeller circuit.



BTW, I’m having problems at the moment getting the Propeller circuit to recognize/output characters. There are a number of minor errors on the board. I will outline to you in a day or two still a work in progress!



John









From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of Gary Kaufman
Sent: Wednesday, September 23, 2015 6:46 PM
To: N8VEM-S100
Subject: [N8VEM-S100:7620] PIC32 Ascii Terminal



I had a small batch of PC boards made up for the PIC32 Ascii Terminal from http://geoffg.net/terminal.html

In order to justify a small run of the boards for my use I had 10 PCB's fabricated in China. I also purchased a PICKIT3 to program up the microcontrollers.

The boards are directly from the Gerber's on Geoff's site, and I've collected up a "mini-kit" of the unique parts:

Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector

Most of the remaining parts are common and likely already in your parts bin.

I have 4 PC boards and "mini-kits" left if anyone is interested. $32 including priority mail postage in the USA to basically cover my costs.

- Gary
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Tom Lafleur
2015-09-25 02:28:46 UTC
Permalink
Part number is correct. Photo is a generic

~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~



On Sep 24, 2015, at 7:00 PM, John Monahan <***@vitasoft.org> wrote:

Hi Gary,
Just about to order the blank chips from Mouser. However the PIC32MX250F128 listed here:-
http://www.mouser.com/ProductDetail/Microchip-Technology/PIC32MX250F128B-I-SP/?qs=hort8UWU32oXjSTLDKUD8A%3D%3D

seems wider than on the circuit board in Geoff’s article. Do I have the wrong one. Will also order a programmer.

I’m try to figure out if I go that route on the SBC-Z80 board what would be the best way to get data to and from the S100 bus itself. If I understand it correctly I would have to have a serial port/chip on the board. Is the “TTL Serial” (pins 5 & 6) compatible with say a 5V Zilog 8530. When you add that as well as buffers etc. the board circuit real estate mounts up. What would be nice if a PIC with a parallel port type pins was programmed/set up to go directly to a local bidirectional board bus as I have with the propeller circuit.

BTW, I’m having problems at the moment getting the Propeller circuit to recognize/output characters. There are a number of minor errors on the board. I will outline to you in a day or two still a work in progress!

John



From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of Gary Kaufman
Sent: Wednesday, September 23, 2015 6:46 PM
To: N8VEM-S100
Subject: [N8VEM-S100:7620] PIC32 Ascii Terminal

I had a small batch of PC boards made up for the PIC32 Ascii Terminal from http://geoffg.net/terminal.html

In order to justify a small run of the boards for my use I had 10 PCB's fabricated in China. I also purchased a PICKIT3 to program up the microcontrollers.

The boards are directly from the Gerber's on Geoff's site, and I've collected up a "mini-kit" of the unique parts:

Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector

Most of the remaining parts are common and likely already in your parts bin.

I have 4 PC boards and "mini-kits" left if anyone is interested. $32 including priority mail postage in the USA to basically cover my costs.

- Gary
--
You received this message because you are subscribed to the Google Groups "N8VEM-S100" group.
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Tom Lafleur
2015-09-25 02:32:01 UTC
Permalink
PIC32MX250F128B-I/SP 28 SPDIP
~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~



On Sep 24, 2015, at 7:00 PM, John Monahan <***@vitasoft.org> wrote:

Hi Gary,
Just about to order the blank chips from Mouser. However the PIC32MX250F128 listed here:-
http://www.mouser.com/ProductDetail/Microchip-Technology/PIC32MX250F128B-I-SP/?qs=hort8UWU32oXjSTLDKUD8A%3D%3D

seems wider than on the circuit board in Geoff’s article. Do I have the wrong one. Will also order a programmer.

I’m try to figure out if I go that route on the SBC-Z80 board what would be the best way to get data to and from the S100 bus itself. If I understand it correctly I would have to have a serial port/chip on the board. Is the “TTL Serial” (pins 5 & 6) compatible with say a 5V Zilog 8530. When you add that as well as buffers etc. the board circuit real estate mounts up. What would be nice if a PIC with a parallel port type pins was programmed/set up to go directly to a local bidirectional board bus as I have with the propeller circuit.

BTW, I’m having problems at the moment getting the Propeller circuit to recognize/output characters. There are a number of minor errors on the board. I will outline to you in a day or two still a work in progress!

John



From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of Gary Kaufman
Sent: Wednesday, September 23, 2015 6:46 PM
To: N8VEM-S100
Subject: [N8VEM-S100:7620] PIC32 Ascii Terminal

I had a small batch of PC boards made up for the PIC32 Ascii Terminal from http://geoffg.net/terminal.html

In order to justify a small run of the boards for my use I had 10 PCB's fabricated in China. I also purchased a PICKIT3 to program up the microcontrollers.

The boards are directly from the Gerber's on Geoff's site, and I've collected up a "mini-kit" of the unique parts:

Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector

Most of the remaining parts are common and likely already in your parts bin.

I have 4 PC boards and "mini-kits" left if anyone is interested. $32 including priority mail postage in the USA to basically cover my costs.

- Gary
--
You received this message because you are subscribed to the Google Groups "N8VEM-S100" group.
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Tom Lafleur
2015-09-25 02:34:10 UTC
Permalink
Yes, it 5 v compatible if you use the 10k resistor

~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~



On Sep 24, 2015, at 7:00 PM, John Monahan <***@vitasoft.org> wrote:

Hi Gary,
Just about to order the blank chips from Mouser. However the PIC32MX250F128 listed here:-
http://www.mouser.com/ProductDetail/Microchip-Technology/PIC32MX250F128B-I-SP/?qs=hort8UWU32oXjSTLDKUD8A%3D%3D

seems wider than on the circuit board in Geoff’s article. Do I have the wrong one. Will also order a programmer.

I’m try to figure out if I go that route on the SBC-Z80 board what would be the best way to get data to and from the S100 bus itself. If I understand it correctly I would have to have a serial port/chip on the board. Is the “TTL Serial” (pins 5 & 6) compatible with say a 5V Zilog 8530. When you add that as well as buffers etc. the board circuit real estate mounts up. What would be nice if a PIC with a parallel port type pins was programmed/set up to go directly to a local bidirectional board bus as I have with the propeller circuit.

BTW, I’m having problems at the moment getting the Propeller circuit to recognize/output characters. There are a number of minor errors on the board. I will outline to you in a day or two still a work in progress!

John



From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of Gary Kaufman
Sent: Wednesday, September 23, 2015 6:46 PM
To: N8VEM-S100
Subject: [N8VEM-S100:7620] PIC32 Ascii Terminal

I had a small batch of PC boards made up for the PIC32 Ascii Terminal from http://geoffg.net/terminal.html

In order to justify a small run of the boards for my use I had 10 PCB's fabricated in China. I also purchased a PICKIT3 to program up the microcontrollers.

The boards are directly from the Gerber's on Geoff's site, and I've collected up a "mini-kit" of the unique parts:

Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector

Most of the remaining parts are common and likely already in your parts bin.

I have 4 PC boards and "mini-kits" left if anyone is interested. $32 including priority mail postage in the USA to basically cover my costs.

- Gary
--
You received this message because you are subscribed to the Google Groups "N8VEM-S100" group.
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Tom Lafleur
2015-09-25 02:48:52 UTC
Permalink
If you don't need the USB port, you can eliminate the xtal and its two
caps, with a one line change in the code
Internal 8Mhz xtal is 1%, good enough for serial ...

No composite, the 150 ohm and the 470 ohm can be replace with one 620ohm
No LED, two more parts removed
no bootstrap, one more connector removed

This is how I've been using it for over two years in a number of projects...
Post by Tom Lafleur
Yes, it 5 v compatible if you use the 10k resistor
~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~
Hi Gary,
Just about to order the blank chips from Mouser. However the
PIC32MX250F128 listed here:-
http://www.mouser.com/ProductDetail/Microchip-Technology/PIC32MX250F128B-I-SP/?qs=hort8UWU32oXjSTLDKUD8A%3D%3D
seems wider than on the circuit board in Geoff’s article. Do I have the
wrong one. Will also order a programmer.
I’m try to figure out if I go that route on the SBC-Z80 board what would
be the best way to get data to and from the S100 bus itself. If I
understand it correctly I would have to have a serial port/chip on the
board. Is the “TTL Serial” (pins 5 & 6) compatible with say a 5V Zilog
8530. When you add that as well as buffers etc. the board circuit real
estate mounts up. What would be nice if a PIC with a parallel port type
pins was programmed/set up to go directly to a local bidirectional board
bus as I have with the propeller circuit.
BTW, I’m having problems at the moment getting the Propeller circuit to
recognize/output characters. There are a number of minor errors on the
board. I will outline to you in a day or two still a work in progress!
John
*Sent:* Wednesday, September 23, 2015 6:46 PM
*To:* N8VEM-S100
*Subject:* [N8VEM-S100:7620] PIC32 Ascii Terminal
I had a small batch of PC boards made up for the PIC32 Ascii Terminal from
http://geoffg.net/terminal.html
In order to justify a small run of the boards for my use I had 10 PCB's
fabricated in China. I also purchased a PICKIT3 to program up the
microcontrollers.
The boards are directly from the Gerber's on Geoff's site, and I've
Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector
Most of the remaining parts are common and likely already in your parts bin.
I have 4 PC boards and "mini-kits" left if anyone is interested. $32
including priority mail postage in the USA to basically cover my costs.
- Gary
--
You received this message because you are subscribed to the Google Groups
"N8VEM-S100" group.
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Tom Lafleur
2015-09-25 02:52:47 UTC
Permalink
In the Configuration Bits.h file:

Make this change to use internal xtal:

#pragma config FNOSC = FRCPLL // Oscillator Selection was
PRIPLL <------------------------
//
PRI is Primary oscillator (XT, HS, EC)
//
PRIPLL is Primary oscillator (XT, HS, EC) w/ PLL
//
SOSC is Secondary oscillator
//
LPRC is Low power RC oscillator
//
FRC is Fast RC oscillator
//
FRCPLL is Fast RC oscillator w/ PLL
//
FRCDIV16 is Fast RC oscillator with divide by 16
//
FRCDIV is Fast RC oscillator with divide
Post by Tom Lafleur
If you don't need the USB port, you can eliminate the xtal and its two
caps, with a one line change in the code
Internal 8Mhz xtal is 1%, good enough for serial ...
No composite, the 150 ohm and the 470 ohm can be replace with one 620ohm
No LED, two more parts removed
no bootstrap, one more connector removed
This is how I've been using it for over two years in a number of projects...
Post by Tom Lafleur
Yes, it 5 v compatible if you use the 10k resistor
~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~
Hi Gary,
Just about to order the blank chips from Mouser. However the
PIC32MX250F128 listed here:-
http://www.mouser.com/ProductDetail/Microchip-Technology/PIC32MX250F128B-I-SP/?qs=hort8UWU32oXjSTLDKUD8A%3D%3D
seems wider than on the circuit board in Geoff’s article. Do I have the
wrong one. Will also order a programmer.
I’m try to figure out if I go that route on the SBC-Z80 board what would
be the best way to get data to and from the S100 bus itself. If I
understand it correctly I would have to have a serial port/chip on the
board. Is the “TTL Serial” (pins 5 & 6) compatible with say a 5V Zilog
8530. When you add that as well as buffers etc. the board circuit real
estate mounts up. What would be nice if a PIC with a parallel port type
pins was programmed/set up to go directly to a local bidirectional board
bus as I have with the propeller circuit.
BTW, I’m having problems at the moment getting the Propeller circuit to
recognize/output characters. There are a number of minor errors on the
board. I will outline to you in a day or two still a work in progress!
John
*Sent:* Wednesday, September 23, 2015 6:46 PM
*To:* N8VEM-S100
*Subject:* [N8VEM-S100:7620] PIC32 Ascii Terminal
I had a small batch of PC boards made up for the PIC32 Ascii Terminal
from http://geoffg.net/terminal.html
In order to justify a small run of the boards for my use I had 10 PCB's
fabricated in China. I also purchased a PICKIT3 to program up the
microcontrollers.
The boards are directly from the Gerber's on Geoff's site, and I've
Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector
Most of the remaining parts are common and likely already in your parts bin.
I have 4 PC boards and "mini-kits" left if anyone is interested. $32
including priority mail postage in the USA to basically cover my costs.
- Gary
--
You received this message because you are subscribed to the Google Groups
"N8VEM-S100" group.
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Tom Lafleur
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Tom Lafleur
2015-09-25 02:58:57 UTC
Permalink
One more thing, if you recompile the code, use XC32 ver 1.32-->1.34, it
will give a number of warning, they are all ok...
will NOT compile with 1.40 or newer because Microchip has remove access to
plib.h that is needed...

good luck
Post by Tom Lafleur
#pragma config FNOSC = FRCPLL // Oscillator Selection was
PRIPLL <------------------------
//
PRI is Primary oscillator (XT, HS, EC)
//
PRIPLL is Primary oscillator (XT, HS, EC) w/ PLL
//
SOSC is Secondary oscillator
//
LPRC is Low power RC oscillator
//
FRC is Fast RC oscillator
//
FRCPLL is Fast RC oscillator w/ PLL
//
FRCDIV16 is Fast RC oscillator with divide by 16
//
FRCDIV is Fast RC oscillator with divide
Post by Tom Lafleur
If you don't need the USB port, you can eliminate the xtal and its two
caps, with a one line change in the code
Internal 8Mhz xtal is 1%, good enough for serial ...
No composite, the 150 ohm and the 470 ohm can be replace with one 620ohm
No LED, two more parts removed
no bootstrap, one more connector removed
This is how I've been using it for over two years in a number of projects...
Post by Tom Lafleur
Yes, it 5 v compatible if you use the 10k resistor
~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~
Hi Gary,
Just about to order the blank chips from Mouser. However the
PIC32MX250F128 listed here:-
http://www.mouser.com/ProductDetail/Microchip-Technology/PIC32MX250F128B-I-SP/?qs=hort8UWU32oXjSTLDKUD8A%3D%3D
seems wider than on the circuit board in Geoff’s article. Do I have the
wrong one. Will also order a programmer.
I’m try to figure out if I go that route on the SBC-Z80 board what would
be the best way to get data to and from the S100 bus itself. If I
understand it correctly I would have to have a serial port/chip on the
board. Is the “TTL Serial” (pins 5 & 6) compatible with say a 5V Zilog
8530. When you add that as well as buffers etc. the board circuit real
estate mounts up. What would be nice if a PIC with a parallel port type
pins was programmed/set up to go directly to a local bidirectional board
bus as I have with the propeller circuit.
BTW, I’m having problems at the moment getting the Propeller circuit to
recognize/output characters. There are a number of minor errors on the
board. I will outline to you in a day or two still a work in progress!
John
*Sent:* Wednesday, September 23, 2015 6:46 PM
*To:* N8VEM-S100
*Subject:* [N8VEM-S100:7620] PIC32 Ascii Terminal
I had a small batch of PC boards made up for the PIC32 Ascii Terminal
from http://geoffg.net/terminal.html
In order to justify a small run of the boards for my use I had 10 PCB's
fabricated in China. I also purchased a PICKIT3 to program up the
microcontrollers.
The boards are directly from the Gerber's on Geoff's site, and I've
Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector
Most of the remaining parts are common and likely already in your parts bin.
I have 4 PC boards and "mini-kits" left if anyone is interested. $32
including priority mail postage in the USA to basically cover my costs.
- Gary
--
You received this message because you are subscribed to the Google
Groups "N8VEM-S100" group.
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~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~
Tom Lafleur
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~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~
Tom Lafleur
--
~~ _/) ~~~~ _/) ~~~~ _/) ~~~~ _/) ~~

Tom Lafleur
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John Monahan
2015-09-25 05:04:09 UTC
Permalink
Thanks Gary,

Sorry guys, I meant to send that last message only to Gary, I sent him on a prototype SBC board.



While on that topic, during the debugging of this one (see:- http://s100computers.com/My%20System%20Pages/SBC%20Z80%20Board/SBC%20Z80%20CPU%20Board.htm)

I have been rethinking what to put on such a board that would be most useful for first time S100 bus users.



I now thinking of dropping the Propeller VGA/keyboard section and replacing it with just the USB port “chip” . This way anybody can communicate with their system initially from standard PC/Telnet software or this PIC32 board. In its place I would drop in the equivalent of the IDE/CF Card board. The board has 60K RAM, 4K ROM, IOBYTE port and a Z80/S100 bus circuit. The board actually has 128K of RAM (2X64) but I cannot figure out how to switch banks without blowing the software out of the water for CPM3. Sure I can do so within the ROM but how do you get stuff across from one bank to another. Anybody seen this done. Normally you have a 16 or 32K window that switches. Hate to settle for a 60K non banked CPM3 system!



John







From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of John Monahan
Sent: Thursday, September 24, 2015 7:00 PM
To: n8vem-***@googlegroups.com
Subject: RE: [N8VEM-S100:7633] PIC32 Ascii Terminal



Hi Gary,

Just about to order the blank chips from Mouser. However the PIC32MX250F128 listed here:-

http://www.mouser.com/ProductDetail/Microchip-Technology/PIC32MX250F128B-I-SP/?qs=hort8UWU32oXjSTLDKUD8A%3D%3D



seems wider than on the circuit board in Geoff’s article. Do I have the wrong one. Will also order a programmer.



I’m try to figure out if I go that route on the SBC-Z80 board what would be the best way to get data to and from the S100 bus itself. If I understand it correctly I would have to have a serial port/chip on the board. Is the “TTL Serial” (pins 5 & 6) compatible with say a 5V Zilog 8530. When you add that as well as buffers etc. the board circuit real estate mounts up. What would be nice if a PIC with a parallel port type pins was programmed/set up to go directly to a local bidirectional board bus as I have with the propeller circuit.



BTW, I’m having problems at the moment getting the Propeller circuit to recognize/output characters. There are a number of minor errors on the board. I will outline to you in a day or two still a work in progress!



John









From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of Gary Kaufman
Sent: Wednesday, September 23, 2015 6:46 PM
To: N8VEM-S100
Subject: [N8VEM-S100:7620] PIC32 Ascii Terminal



I had a small batch of PC boards made up for the PIC32 Ascii Terminal from http://geoffg.net/terminal.html

In order to justify a small run of the boards for my use I had 10 PCB's fabricated in China. I also purchased a PICKIT3 to program up the microcontrollers.

The boards are directly from the Gerber's on Geoff's site, and I've collected up a "mini-kit" of the unique parts:

Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector

Most of the remaining parts are common and likely already in your parts bin.

I have 4 PC boards and "mini-kits" left if anyone is interested. $32 including priority mail postage in the USA to basically cover my costs.

- Gary
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norwestrzh via N8VEM-S100
2015-09-25 16:11:19 UTC
Permalink
John --
Post by John Monahan
The board has 60K RAM, 4K ROM, IOBYTE port and a Z80/S100 bus circuit. The board actually has 128K of RAM (2X64)
but I cannot figure out how to switch banks without blowing the software out of the water for CPM3. Sure I can do so
within the ROM but how do you get stuff across from one bank to another. Anybody seen this done. Normally you have a
16 or 32K window that switches. Hate to settle for a 60K non banked CPM3 system!
Use a single 512x8 SRAM chip and a 74LS670. I've built an Z80 SBC prototype with the 670, and I think it would be easy to set one up with either 16k or 32k banks (user selectable) with just a few jumpers. With 32k banks, the CPU would use the whole SRAM chip, with 16k, just half. Worked great on my SBCs, at 10MHz. Both banking schemes seem to have advantages and disadvantages.

Roger
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Bob Bell
2015-09-25 20:43:26 UTC
Permalink
John, I have banking hardware being built into my updated (Version 2) Mem8Plus board. It uses 4 chips, (5 if you count the 74LS688 I/O port address decoder) including a GAL22V10. I know you are trying to stay away from GALs on this, but it provides so much flexibility, including dip-switch or jumper selectable common sizes of 8K, 16K, 24K and 32K, normal “Cromemco-style” linear I/O port bank select of up to 4 banks, or encoded bank-select that can be used for up to 16 banks. It also has outputs that can be used to enable a ROM address decoder for the time just after reset when the ROM is to be enabled, then disable the ROM when the first bank is selected (presumably by the CP/M boot loader). And it has a disable in case the CPU has 24 bit addressing and the MMU is not needed (a function I imagine you won’t need.) I have this running on my Mem8Plus V2 breadboard and I expect to be starting prototype board layout this weekend.



Bob Bell





From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com]
Sent: Friday, September 25, 2015 12:11 PM
To: n8vem-***@googlegroups.com
Subject: Re: [N8VEM-S100:7643] PIC32 Ascii Terminal



John --
Post by John Monahan
The board has 60K RAM, 4K ROM, IOBYTE port and a Z80/S100 bus circuit. The board actually has 128K of RAM (2X64)
but I cannot figure out how to switch banks without blowing the software out of the water for CPM3. Sure I can do so
within the ROM but how do you get stuff across from one bank to another. Anybody seen this done. Normally you have a
16 or 32K window that switches. Hate to settle for a 60K non banked CPM3 system!
Use a single 512x8 SRAM chip and a 74LS670. I've built an Z80 SBC prototype with the 670, and I think it would be easy to set one up with either 16k or 32k banks (user selectable) with just a few jumpers. With 32k banks, the CPU would use the whole SRAM chip, with 16k, just half. Worked great on my SBCs, at 10MHz. Both banking schemes seem to have advantages and disadvantages.

Roger
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John Monahan
2015-09-25 23:32:15 UTC
Permalink
Thanks Roger, I have figured it out. If 128K, line A16 does the two 64K pages, Address line A15 does the 32K within these.

Using an AND gate, A15 and a page 1 or 2 signal you can control A16 so that the bottom or top 32K is common. Wastes 32K of RAM but fast and easy!



So it looks like I could get CPM3 on the board!!!

John.





From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com]
Sent: Friday, September 25, 2015 9:11 AM
To: n8vem-***@googlegroups.com
Subject: Re: [N8VEM-S100:7643] PIC32 Ascii Terminal



John --
Post by John Monahan
The board has 60K RAM, 4K ROM, IOBYTE port and a Z80/S100 bus circuit. The board actually has 128K of RAM (2X64)
but I cannot figure out how to switch banks without blowing the software out of the water for CPM3. Sure I can do so
within the ROM but how do you get stuff across from one bank to another. Anybody seen this done. Normally you have a
16 or 32K window that switches. Hate to settle for a 60K non banked CPM3 system!
Use a single 512x8 SRAM chip and a 74LS670. I've built an Z80 SBC prototype with the 670, and I think it would be easy to set one up with either 16k or 32k banks (user selectable) with just a few jumpers. With 32k banks, the CPU would use the whole SRAM chip, with 16k, just half. Worked great on my SBCs, at 10MHz. Both banking schemes seem to have advantages and disadvantages.

Roger
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Brian Marstella
2015-09-25 19:39:34 UTC
Permalink
Hi, Gary,

If you do another run, I'd be interested in 1 or 2 as well, depending on
cost.

Regards, Brian.
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Steven M Jones
2015-09-25 19:50:40 UTC
Permalink
Post by Gary Kaufman
Composite Video Connector
I was confused and didn't realize this had VGA output. I'd take at least
one if there's another run.
--S.
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Tom Lafleur
2015-09-26 15:00:21 UTC
Permalink
One of the ways I've use the ASCII terminal is with an original Altair
computer
It has an 8080, memory, disk, and a serial port.

I've connected the serial port to the ASCII Terminal, then I have extended
the
USB, VGA and Keyboard connectors to the back panel for external connection.

I can now add a VGA display and Keyboard or connect via USB to access the
computer.

works very well for demo of this "old" hardware.

(one could use the PIC32 processor in the ASCII terminal to do a full
emulation of the Altair at 10x the speed!, oh well!, that another project.)
Post by Steven M Jones
Post by Gary Kaufman
Composite Video Connector
I was confused and didn't realize this had VGA output. I'd take at least
one if there's another run.
--S.
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Howard W Feindel
2015-09-25 21:02:50 UTC
Permalink
Gary,

I'd also be interested in two boards plus the critical parts, if possible.

Thanks,
HWF
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Gary Kaufman
2015-09-25 22:24:57 UTC
Permalink
Looks like enough interest to justify a run.

What I'd like to do is put together full kits including PC board,
Programmed PIC32's and all of the parts on the board. By putting
together about 20 kits the bulk pricing brings the price down nicely.

If I did my calculations correctly, I should be able to put this
together for $32 including priority mail in the US.

Thus far I've seen posts by these folks, let me know if I've missed anyone!

I'll collect names for another week or so and then place orders.

- Gary

Todd Goodman 2
Don Caprio 2
Dave (Yoda) 2
Brian Marstella 1 or 2
Steven Jones 1
Bob Bell 1
Greg Beat 1
Malcom Ramey 2
Howard Feindel 2
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Crusty OMO
2015-09-25 23:02:03 UTC
Permalink
Gary,

Please put me down for 2.

Cheers,
Josh Bensadon
Subject: [N8VEM-S100:7651] PIC32 Ascii Terminal - Enough interest to justify a run.
Date: Fri, 25 Sep 2015 18:24:57 -0400
Looks like enough interest to justify a run.
What I'd like to do is put together full kits including PC board,
Programmed PIC32's and all of the parts on the board. By putting
together about 20 kits the bulk pricing brings the price down nicely.
If I did my calculations correctly, I should be able to put this
together for $32 including priority mail in the US.
Thus far I've seen posts by these folks, let me know if I've missed anyone!
I'll collect names for another week or so and then place orders.
- Gary
Todd Goodman 2
Don Caprio 2
Dave (Yoda) 2
Brian Marstella 1 or 2
Steven Jones 1
Bob Bell 1
Greg Beat 1
Malcom Ramey 2
Howard Feindel 2
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Elsid
2015-09-25 23:13:36 UTC
Permalink
Hi Garry,

You can put me down for 2 kits please.

Cheers
Leon Byles
Post by Gary Kaufman
Looks like enough interest to justify a run.
What I'd like to do is put together full kits including PC board,
Programmed PIC32's and all of the parts on the board. By putting
together about 20 kits the bulk pricing brings the price down nicely.
If I did my calculations correctly, I should be able to put this
together for $32 including priority mail in the US.
Thus far I've seen posts by these folks, let me know if I've missed anyone!
I'll collect names for another week or so and then place orders.
- Gary
Todd Goodman 2
Don Caprio 2
Dave (Yoda) 2
Brian Marstella 1 or 2
Steven Jones 1
Bob Bell 1
Greg Beat 1
Malcom Ramey 2
Howard Feindel 2
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Todd Miller
2015-09-25 23:16:38 UTC
Permalink
Put me on the list, I'll take one !

Todd Miller
Post by Gary Kaufman
Looks like enough interest to justify a run.
What I'd like to do is put together full kits including PC board,
Programmed PIC32's and all of the parts on the board. By putting
together about 20 kits the bulk pricing brings the price down nicely.
If I did my calculations correctly, I should be able to put this
together for $32 including priority mail in the US.
Thus far I've seen posts by these folks, let me know if I've missed anyone!
I'll collect names for another week or so and then place orders.
- Gary
Todd Goodman 2
Don Caprio 2
Dave (Yoda) 2
Brian Marstella 1 or 2
Steven Jones 1
Bob Bell 1
Greg Beat 1
Malcom Ramey 2
Howard Feindel 2
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lcyoung
2015-09-26 12:18:06 UTC
Permalink
Please add me to the ASCII Terminal list for one unit also!

Thanks



Leonard Young (KS4RN)



From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of Todd Miller
Sent: Friday, September 25, 2015 7:17 PM
To: N8VEM-S100
Subject: [N8VEM-S100:7655] Re: PIC32 Ascii Terminal - Enough interest to justify a run.



Put me on the list, I'll take one !

Todd Miller

On Friday, September 25, 2015 at 5:24:53 PM UTC-5, Gary Kaufman wrote:

Looks like enough interest to justify a run.

What I'd like to do is put together full kits including PC board,
Programmed PIC32's and all of the parts on the board. By putting
together about 20 kits the bulk pricing brings the price down nicely.

If I did my calculations correctly, I should be able to put this
together for $32 including priority mail in the US.

Thus far I've seen posts by these folks, let me know if I've missed anyone!

I'll collect names for another week or so and then place orders.

- Gary

Todd Goodman 2
Don Caprio 2
Dave (Yoda) 2
Brian Marstella 1 or 2
Steven Jones 1
Bob Bell 1
Greg Beat 1
Malcom Ramey 2
Howard Feindel 2
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Ian May
2015-09-26 04:56:59 UTC
Permalink
Hi Gary,
Please put me on your list for 2 kits.
Cheers,
Ian May.
Post by Gary Kaufman
Looks like enough interest to justify a run.
What I'd like to do is put together full kits including PC board,
Programmed PIC32's and all of the parts on the board. By putting together
about 20 kits the bulk pricing brings the price down nicely.
If I did my calculations correctly, I should be able to put this together
for $32 including priority mail in the US.
Thus far I've seen posts by these folks, let me know if I've missed anyone!
I'll collect names for another week or so and then place orders.
- Gary
Todd Goodman 2
Don Caprio 2
Dave (Yoda) 2
Brian Marstella 1 or 2
Steven Jones 1
Bob Bell 1
Greg Beat 1
Malcom Ramey 2
Howard Feindel 2
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Jeff Albrecht
2015-09-27 10:56:39 UTC
Permalink
Post by Gary Kaufman
Looks like enough interest to justify a run.
Please put me down for one (1).

- jeffa
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h***@gmail.com
2015-09-26 12:44:52 UTC
Permalink
Gary,
Please put me down for one also.
Thanks
Harold Rothwell
Post by Gary Kaufman
I had a small batch of PC boards made up for the PIC32 Ascii Terminal from
http://geoffg.net/terminal.html
In order to justify a small run of the boards for my use I had 10 PCB's
fabricated in China. I also purchased a PICKIT3 to program up the
microcontrollers.
The boards are directly from the Gerber's on Geoff's site, and I've
Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector
Most of the remaining parts are common and likely already in your parts
bin.
I have 4 PC boards and "mini-kits" left if anyone is interested. $32
including priority mail postage in the USA to basically cover my costs.
- Gary
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David Fry
2015-09-26 15:09:11 UTC
Permalink
Hi Gary,

could you supply me with one pre-programmed PIC32 chip ?
Don't need the PCB or kit of parts, I plan on making a custom PCB to fit
inside a mono composite monitor.

Regards

David Fry
Post by Gary Kaufman
I had a small batch of PC boards made up for the PIC32 Ascii Terminal from
http://geoffg.net/terminal.html
In order to justify a small run of the boards for my use I had 10 PCB's
fabricated in China. I also purchased a PICKIT3 to program up the
microcontrollers.
The boards are directly from the Gerber's on Geoff's site, and I've
Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector
Most of the remaining parts are common and likely already in your parts
bin.
I have 4 PC boards and "mini-kits" left if anyone is interested. $32
including priority mail postage in the USA to basically cover my costs.
- Gary
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Gary Kaufman
2015-09-26 18:56:37 UTC
Permalink
David -

Sure, I'd be happy to. Then again, I'm not sure if it's worth the shipping.

I grabbed a PICKIT3 from Ebay and can send you the diagram of the jig I
originally wired up on a breadboard.

I might also be able to organize a bulk shipment to one of you in the UK
to then divide up the parcels.

- Gary
Post by Robert Greenstreet
Hi Gary,
could you supply me with one pre-programmed PIC32 chip ?
Don't need the PCB or kit of parts, I plan on making a custom PCB to
fit inside a mono composite monitor.
Regards
David Fry
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David Fry
2015-09-26 19:19:06 UTC
Permalink
Hi Gary,

good point,
can you post a link to the programmer you purchased on ebay ?

Also, I think I might be the only one in the UK

regards

David
Post by Gary Kaufman
David -
Sure, I'd be happy to. Then again, I'm not sure if it's worth the shipping.
I grabbed a PICKIT3 from Ebay and can send you the diagram of the jig I
originally wired up on a breadboard.
I might also be able to organize a bulk shipment to one of you in the UK
to then divide up the parcels.
- Gary
Post by Robert Greenstreet
Hi Gary,
could you supply me with one pre-programmed PIC32 chip ?
Don't need the PCB or kit of parts, I plan on making a custom PCB to
fit inside a mono composite monitor.
Regards
David Fry
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Gary Kaufman
2015-09-26 19:32:23 UTC
Permalink
David -

Jim Orchard is also in the UK (at least by his email address).

I purchased this PICkit3, but would tell you the ZIF board included was
useless with the PIC32 (at least I couldn't get it working and there was
Zero documentation). The ICSP cable worked fine with a breadboard.
http://www.ebay.com/itm/141636162194?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

A bunch of vendors in Hong Kong or China have them for less than $15

I used the PICkit3 "Header with self power supply" on this site for
actually burning. I just set it up on a temporary breadboard and used
an LM317 circuit and 9V battery.
https://sites.google.com/site/pcusbprojects/5-custom-projects/r-pickit-3-header-for-pic32mx250f128b-programming

Again, happy to burn them and include them in a shipment to Jim if he's
ok with that.

- Gary
Post by Robert Greenstreet
Hi Gary,
good point,
can you post a link to the programmer you purchased on ebay ?
Also, I think I might be the only one in the UK
regards
David
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David Fry
2015-09-26 19:57:54 UTC
Permalink
Thanks Gary,

I think I'll pick up one of the programmers from Ebay, it will be useful if
I want to play with the code.

regards

David
Post by Gary Kaufman
David -
Jim Orchard is also in the UK (at least by his email address).
I purchased this PICkit3, but would tell you the ZIF board included was
useless with the PIC32 (at least I couldn't get it working and there was
Zero documentation). The ICSP cable worked fine with a breadboard.
http://www.ebay.com/itm/141636162194?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
A bunch of vendors in Hong Kong or China have them for less than $15
I used the PICkit3 "Header with self power supply" on this site for
actually burning. I just set it up on a temporary breadboard and used
an LM317 circuit and 9V battery.
https://sites.google.com/site/pcusbprojects/5-custom-projects/r-pickit-3-header-for-pic32mx250f128b-programming
Again, happy to burn them and include them in a shipment to Jim if he's
ok with that.
- Gary
Post by Robert Greenstreet
Hi Gary,
good point,
can you post a link to the programmer you purchased on ebay ?
Also, I think I might be the only one in the UK
regards
David
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Tom Lafleur
2015-09-26 20:08:26 UTC
Permalink
If your going to re-compile the code, I made some minor change to remove
the warning from the orgional... I also added the support for the larger
PIC32MX270 chip

Some minor change I made in ther code to fix complier warnings with XC32
1.32 to 1.34... ( it will NOT compile with ver 1.4 as Microchip has removed
plib)
( i changed ver to 1.3a)

1) spelling error for Terminal in usb_descriptors.c

//Product string descriptor
ROM struct{BYTE bLength;BYTE bDscType;WORD string[14];}sd002={
sizeof(sd002),USB_DESCRIPTOR_STRING,
{'V','i','d','e','o',' ','T','e','r','m','i','n','a','l'}
};

2) Added in preprocessor macro in Project Properties

_DISABLE_OPENADC10_CONFIGPORT_WARNING
_SUPPRESS_PLIB_WARNING

3) changes all ISR to be of this format: (added IPLxAUTO)

In Keyboard.c
void __ISR( _EXTERNAL_3_VECTOR , ipl2AUTO) INT3Interrupt(void) {

In Main.c

void __ISR(_UART2_VECTOR, ipl3AUTO) IntUart2Handler(void) {
void __ISR( _TIMER_4_VECTOR, ipl1AUTO) T4Interrupt(void) {


4) Added code to support PIC32MX270xx (what I had on hand) in Terminal.h

// grab as much memory as possible for video and Rx buffers

#if (__32MX250F128B__)
#define BUFFER_SIZE (29820) // this
should be the largest possible size allowed by the compiler/linker
#elif (__32MX270F256B__)
#define BUFFER_SIZE (56000)
#endif

5) changed all <p32xxxx.h> tobe <xc.h>

/* System include files */
#include <xc.h>
//#include <p32xxxx.h>


6) remove the linker scrip from the project...ie: let the IDE pick the
correct one...
Post by John Monahan
Thanks Gary,
I think I'll pick up one of the programmers from Ebay, it will be useful
if I want to play with the code.
regards
David
Post by Gary Kaufman
David -
Jim Orchard is also in the UK (at least by his email address).
I purchased this PICkit3, but would tell you the ZIF board included was
useless with the PIC32 (at least I couldn't get it working and there was
Zero documentation). The ICSP cable worked fine with a breadboard.
http://www.ebay.com/itm/141636162194?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
A bunch of vendors in Hong Kong or China have them for less than $15
I used the PICkit3 "Header with self power supply" on this site for
actually burning. I just set it up on a temporary breadboard and used
an LM317 circuit and 9V battery.
https://sites.google.com/site/pcusbprojects/5-custom-projects/r-pickit-3-header-for-pic32mx250f128b-programming
Again, happy to burn them and include them in a shipment to Jim if he's
ok with that.
- Gary
Post by Robert Greenstreet
Hi Gary,
good point,
can you post a link to the programmer you purchased on ebay ?
Also, I think I might be the only one in the UK
regards
David
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Tom Lafleur
2015-09-26 20:01:17 UTC
Permalink
ASCII Terminal board

Just a note... The MCP1700-3.3 voltage regulator is a bit hard to find in
ones junk box.. and its only rated at MAX Vin of 6V

You can use a 78L33 if your careful of the pin-out, only a slight rotation
of the pins make this a viable option. Its also rated at a Vin of 30V, but
be sure to watch thermal ratings at large Vin.
Look at data sheets for both part to validate pin rotation...
Post by Gary Kaufman
David -
Jim Orchard is also in the UK (at least by his email address).
I purchased this PICkit3, but would tell you the ZIF board included was
useless with the PIC32 (at least I couldn't get it working and there was
Zero documentation). The ICSP cable worked fine with a breadboard.
http://www.ebay.com/itm/141636162194?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
A bunch of vendors in Hong Kong or China have them for less than $15
I used the PICkit3 "Header with self power supply" on this site for
actually burning. I just set it up on a temporary breadboard and used an
LM317 circuit and 9V battery.
https://sites.google.com/site/pcusbprojects/5-custom-projects/r-pickit-3-header-for-pic32mx250f128b-programming
Again, happy to burn them and include them in a shipment to Jim if he's ok
with that.
- Gary
Post by Robert Greenstreet
Hi Gary,
good point,
can you post a link to the programmer you purchased on ebay ?
Also, I think I might be the only one in the UK
regards
David
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m***@jimorchard.co.uk
2015-09-26 12:05:38 UTC
Permalink
Hi Gary

Can you add me to your list for 2 kits please

Jim Orchard
Post by Gary Kaufman
I had a small batch of PC boards made up for the PIC32 Ascii Terminal from
http://geoffg.net/terminal.html
In order to justify a small run of the boards for my use I had 10 PCB's
fabricated in China. I also purchased a PICKIT3 to program up the
microcontrollers.
The boards are directly from the Gerber's on Geoff's site, and I've
Bare PCB with silk screening and solder mask
PIC32 (programmed)
27pf Caps x 2
Microchip LDO Voltage Regulator
Mill-Max IC Socket (28 pin)
USB Connector
Keyboard DIN connector
8mhz xtal
82 ohm resistor
Composite Video Connector
Most of the remaining parts are common and likely already in your parts
bin.
I have 4 PC boards and "mini-kits" left if anyone is interested. $32
including priority mail postage in the USA to basically cover my costs.
- Gary
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Gary Kaufman
2015-09-29 12:32:24 UTC
Permalink
Final order list, I'll place the order for PCB's and parts in the next day
or so.

Todd Goodman 2
Don Caprio 2
Dave (Yoda) 2
Brian Marstella 1
Steven Jones 1
Bob Bell 1
Greg Beat 1
Malcom Ramey 2
Howard Feindel 2
Malcolm Macleod 1
Josh Bensadon 2
Leon Byles 2
Todd Miller 1
Ian May 2
Jim Orchard 2
Leonard Young 1
Harold Rothwell 1
Jeff Albrecht 1

If I missed anyone please let me know asap.

Also for those not in the USA, remember that postage will be higher.
I was figuring $5.25 for postage in the US, but postage to UK/AU is $26.50
- so $21.25 additional for 1, $16.00 additional for 2 kits etc.

Thanks,

- Gary
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Richard Cini
2015-09-29 12:41:59 UTC
Permalink
Gary -- is like one as well.


Rich Cini

Sent from my iPhone
Final order list, I'll place the order for PCB's and parts in the next day or so.
Todd Goodman 2
Don Caprio 2
Dave (Yoda) 2
Brian Marstella 1
Steven Jones 1
Bob Bell 1
Greg Beat 1
Malcom Ramey 2
Howard Feindel 2
Malcolm Macleod 1
Josh Bensadon 2
Leon Byles 2
Todd Miller 1
Ian May 2
Jim Orchard 2
Leonard Young 1
Harold Rothwell 1
Jeff Albrecht 1
If I missed anyone please let me know asap.
Also for those not in the USA, remember that postage will be higher.
I was figuring $5.25 for postage in the US, but postage to UK/AU is $26.50 - so $21.25 additional for 1, $16.00 additional for 2 kits etc.
Thanks,
- Gary
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Matthew Turner
2015-09-29 13:07:48 UTC
Permalink
Hey Gary!

Please put me down for one kit as well.

Thanks!

Matt Turner

Date: Tue, 29 Sep 2015 05:32:24 -0700
From: ***@gmail.com
To: n8vem-***@googlegroups.com
Subject: [N8VEM-S100:7690] Re: PIC32 Ascii Terminal

Final order list, I'll place the order for PCB's and parts in the next day or so.

Todd Goodman 2
Don Caprio 2
Dave (Yoda) 2
Brian Marstella 1
Steven Jones 1
Bob Bell 1
Greg Beat 1
Malcom Ramey 2
Howard Feindel 2
Malcolm Macleod 1
Josh Bensadon 2
Leon Byles 2
Todd Miller 1
Ian May 2
Jim Orchard 2
Leonard Young 1
Harold Rothwell 1
Jeff Albrecht 1

If I missed anyone please let me know asap.

Also for those not in the USA, remember that postage will be higher.
I was figuring $5.25 for postage in the US, but postage to UK/AU is $26.50 - so $21.25 additional for 1, $16.00 additional for 2 kits etc.

Thanks,

- Gary
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lcyoung
2015-09-29 16:20:56 UTC
Permalink
Gary



Please change my order from (1) to (2) of the Terminal Kits.

Thank you



Leonard Young



From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com] On Behalf Of Gary Kaufman
Sent: Tuesday, September 29, 2015 8:32 AM
To: N8VEM-S100
Subject: [N8VEM-S100:7690] Re: PIC32 Ascii Terminal



Final order list, I'll place the order for PCB's and parts in the next day or so.

Todd Goodman 2
Don Caprio 2
Dave (Yoda) 2
Brian Marstella 1
Steven Jones 1
Bob Bell 1
Greg Beat 1
Malcom Ramey 2
Howard Feindel 2
Malcolm Macleod 1
Josh Bensadon 2
Leon Byles 2
Todd Miller 1
Ian May 2
Jim Orchard 2
Leonard Young 1
Harold Rothwell 1
Jeff Albrecht 1

If I missed anyone please let me know asap.

Also for those not in the USA, remember that postage will be higher.
I was figuring $5.25 for postage in the US, but postage to UK/AU is $26.50 - so $21.25 additional for 1, $16.00 additional for 2 kits etc.

Thanks,

- Gary
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Gary Kaufman
2015-09-29 20:53:09 UTC
Permalink
Rich, Matt, Eric and Leonard are all set.

Orders have been placed.
I should have a few extra PC boards available in the end, but won't be
making up any extra kits.

Hopefully I'll have all of the parts and PC boards in about 2 weeks.

- Gary
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Eric Osman
2015-09-29 14:25:33 UTC
Permalink
Hi Gary -

Please add Eric Osman for 1.

Thanks!

- Eric

-----Original Message-----
From: n8vem-***@googlegroups.com [mailto:n8vem-***@googlegroups.com]On
Behalf Of Gary Kaufman
Sent: Tuesday, September 29, 2015 5:32 AM
To: N8VEM-S100
Subject: [N8VEM-S100:7690] Re: PIC32 Ascii Terminal


Final order list, I'll place the order for PCB's and parts in the next day
or so.

Todd Goodman 2
Don Caprio 2
Dave (Yoda) 2
Brian Marstella 1
Steven Jones 1
Bob Bell 1
Greg Beat 1
Malcom Ramey 2
Howard Feindel 2
Malcolm Macleod 1
Josh Bensadon 2
Leon Byles 2
Todd Miller 1
Ian May 2
Jim Orchard 2
Leonard Young 1
Harold Rothwell 1
Jeff Albrecht 1

If I missed anyone please let me know asap.

Also for those not in the USA, remember that postage will be higher.
I was figuring $5.25 for postage in the US, but postage to UK/AU is $26.50 -
so $21.25 additional for 1, $16.00 additional for 2 kits etc.

Thanks,

- Gary


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Tim Acker
2015-09-30 11:35:50 UTC
Permalink
Hi Gary,

I guess I missed getting on the list for the order. I would be interested
in one of the bare PC boards if you have any available after your done with
the kits.

Tim Acker
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Gary Kaufman
2015-09-30 15:45:25 UTC
Permalink
Tim -

I emailed you privately as well.

I have ordered enough parts for 35 boards, and will have 50 PC boards
fabricated. I have 32 kits spoken for. If all goes well (no
missing/damaged parts, no kits lost in shipping) I'll have one for Tim and
2 others. I'll just need to wait until the other kits are packaged and
delivered.

At the least, I can provide you with a bare board and would be willing to
program up a PIC32.

- Gary
Post by Robert Greenstreet
Hi Gary,
I guess I missed getting on the list for the order. I would be interested
in one of the bare PC boards if you have any available after your done with
the kits.
Tim Acker
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yoda
2015-09-30 16:35:06 UTC
Permalink
Hi Gary

If you need, on my order of 2 you can send one as kit and other as bare PCB
if you need an extra kit to ship

Dave
Post by Gary Kaufman
Tim -
I emailed you privately as well.
I have ordered enough parts for 35 boards, and will have 50 PC boards
fabricated. I have 32 kits spoken for. If all goes well (no
missing/damaged parts, no kits lost in shipping) I'll have one for Tim and
2 others. I'll just need to wait until the other kits are packaged and
delivered.
At the least, I can provide you with a bare board and would be willing to
program up a PIC32.
- Gary
Post by Robert Greenstreet
Hi Gary,
I guess I missed getting on the list for the order. I would be interested
in one of the bare PC boards if you have any available after your done with
the kits.
Tim Acker
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Gary Kaufman
2015-10-09 20:34:07 UTC
Permalink
The PIC32 PC boards and parts are all ready to distribute.

I've sent a private email to everyone I had on my list, if you don't get a
message let me know.

A few construction notes, posted here so they're easy to locate in the
future:



*Geoff's documentation for the ASCII PIC32 terminal are at
http://geoffg.net/terminal.html*
*Construction Notes:*

The PIC32 is pre-programmed with Firmware V1.3 and I've pre-tested them all
in a working setup.

Really a quick easy kit to construct, took me under 30 minutes to have it
up and running.

There were some small differences between the schematic, parts list, and
silk screening.
The schematic and parts list use a 10K/100K pair of resistors for RxD, but
the silk screening has 4.7K and 47K.
I provided the 10K and 100K pair. The 4.7K just above the TTL Serial
connector should be the 10K, and the 47K resistor next to
the USB connector should be 100K

I sourced 1/8 watt resistors for all but the 82 ohm resistors. This was by
error, but shouldn't be an issue as none of them will
dissipate anywhere close to 1/8 watt.

The VGA connector I received has pins that are a bit narrow, but with a
slight bit of spreading will fit the PC board just fine.

The DIN Keyboard connector has two tabs that need to be clipped off to fit
the PC board.

The pin strip can be easily snapped for the various lengths needed with
lots left over.

There is really no need for the ICSP connector unless you plan to reprogram
the PIC32 with the PICKIT3 programmer.

The LED mounts with the longer lead as "+" and the flat side away from the
USB connector.

Don't forget to connect one of the "BLU" "GRN" "RED" pads! I'd suggest the
"GRN" personally.

*Testing:*

Jumper the USB power connector, Baud Rate jumper "A" and the Rx/Tx pins
with the three jumpers provided.
Hook up a standard PC keyboard, VGA monitor and USB power adapter.
The LED should light, you should get a welcome message on the screen, and
key strokes should echo to the screen.

SHIFT-F12 on the keyboard will bring up a menu.
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Gary Kaufman
2015-10-10 20:16:16 UTC
Permalink
Packages went off today to:

Todd Goodman
Dave Mehaffy
Greg Beat
Malcom Ramey
Howard Feindel
Leon Byles
Anthony DeStefano
Rich Cini
Todd Miller
Jim Orchard

You should receive tracking #'s directly from USPS, 2-3 business days to
USA locations, 5-8 AU/UK

- Gary
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norwestrzh via N8VEM-S100
2015-10-11 01:21:50 UTC
Permalink
Great job Gary!!!!

Assembly was *very* easy, and it works!!!! Glad you posted construction notes, and other info. I was wondering about a few things, and they cleared all of that up. The PCB is so small that the hardest part was getting it to "hold still" while I soldered.



This will make a great console for a number of my SBCs.






Takes me back to a project for an ASCII terminal way back when. I think it was called the ZRT-80?? Produced and sold by "Digital Research Computers"? It was a 6.5" x 9"(!) PCB -- bunches of TTL, a Z80A, EPROMs, an 8250 (UART?), and a 6845 CRT driver. As I remember it, basically the same functionality as Geoff Graham terminal -- keyboard (old style (parallel) with maybe a dozen wires) and video. BUT ... the design was pushing the TTL to the limit, so there were some 74S parts required for speed. Mine worked, but it glitched so often (and had to be reset) that it was quite annoying to try to use it. What a difference in 30 or 40 years!!!

Would you consider selling some pre-programmed PICs? I might want to build up other terminals in the future, and I'd really rather not buy the stuff necessary to program the microcontroller. (I'm an ATMEL kinda' guy!)

Roger
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Gary Kaufman
2015-10-11 16:15:56 UTC
Permalink
Roger -

Great to hear. I take very little credit, it was Geoff who did the
design and published all of the necessary files.

BTW I also used a ZRT-80 for many years. Somewhere in one of many moves
I lost mine, but would still like to find one again. It was a pick'y
design but was affordable. One funny glitch I learned is that it would
only work with the Hitachi version of the 6845...

Happy to program PIC's for you, but with a working board it's really
easy. Just remove all of the baud rate jumpers and populate the ICSP
header. You need a PICKIT3 programmer (there are cheap Chinese
knock-off's on Ebay for around $15), the .hex file from Geoff's site and
MPLAB IPE (free). I won't tell the Atmel folks...

- Gary
Post by norwestrzh via N8VEM-S100
Great job Gary!!!!
Assembly was *very* easy, and it works!!!! Glad you posted
construction notes, and other info. I was wondering about a few
things, and they cleared all of that up. The PCB is so small that the
hardest part was getting it to "hold still" while I soldered.
This will make a great console for a number of my SBCs.
it_works.jpg
Takes me back to a project for an ASCII terminal way back when. I
think it was called the ZRT-80?? Produced and sold by "Digital
Research Computers"? It was a 6.5" x 9"(!) PCB -- bunches of TTL, a
Z80A, EPROMs, an 8250 (UART?), and a 6845 CRT driver. As I remember
it, basically the same functionality as Geoff Graham terminal --
keyboard (old style (parallel) with maybe a dozen wires) and video.
BUT ... the design was pushing the TTL to the limit, so there were
some 74S parts required for speed. Mine worked, but it glitched so
often (and had to be reset) that it was quite annoying to try to use
it. What a difference in 30 or 40 years!!!
Would you consider selling some pre-programmed PICs? I might want to
build up other terminals in the future, and I'd really rather not buy
the stuff necessary to program the microcontroller. (I'm an ATMEL
kinda' guy!)
Roger
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J. Alexander Jacocks
2015-10-12 01:20:14 UTC
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Or, even easier, since you need an EPROM programmer, anyway, get one that
can program PICs. That way you don't need a special programmer for one
type of chip.

- Alex
Post by Gary Kaufman
Roger -
Great to hear. I take very little credit, it was Geoff who did the design
and published all of the necessary files.
BTW I also used a ZRT-80 for many years. Somewhere in one of many moves I
lost mine, but would still like to find one again. It was a pick'y design
but was affordable. One funny glitch I learned is that it would only work
with the Hitachi version of the 6845...
Happy to program PIC's for you, but with a working board it's really
easy. Just remove all of the baud rate jumpers and populate the ICSP
header. You need a PICKIT3 programmer (there are cheap Chinese knock-off's
on Ebay for around $15), the .hex file from Geoff's site and MPLAB IPE
(free). I won't tell the Atmel folks...
- Gary
Great job Gary!!!!
Assembly was *very* easy, and it works!!!! Glad you posted construction
notes, and other info. I was wondering about a few things, and they
cleared all of that up. The PCB is so small that the hardest part was
getting it to "hold still" while I soldered.
This will make a great console for a number of my SBCs.
[image: it_works.jpg]
Takes me back to a project for an ASCII terminal way back when. I think
it was called the ZRT-80?? Produced and sold by "Digital Research
Computers"? It was a 6.5" x 9"(!) PCB -- bunches of TTL, a Z80A, EPROMs,
an 8250 (UART?), and a 6845 CRT driver. As I remember it, basically the
same functionality as Geoff Graham terminal -- keyboard (old style
(parallel) with maybe a dozen wires) and video. BUT ... the design was
pushing the TTL to the limit, so there were some 74S parts required for
speed. Mine worked, but it glitched so often (and had to be reset) that it
was quite annoying to try to use it. What a difference in 30 or 40 years!!!
Would you consider selling some pre-programmed PICs? I might want to
build up other terminals in the future, and I'd really rather not buy the
stuff necessary to program the microcontroller. (I'm an ATMEL kinda' guy!)
Roger
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