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G-Pascal 64K RAM PCB + Programmer

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Posted by Mike Mclaren   (2 posts)  [Biography] bio
Date Thu 24 Aug 2023 06:01 AM (UTC)
Message
I love this G-Pascal package. Thank you. Well done.

I have a 2.8"x4.0" G-Pascal compatible PCB design with 64K RAM and optional 28C256 or 39SF010A ROM. A Nano is fitted on-board and provides a 1, 2, 4, or 8 MHz clock, an econo' reset function, and in-circuit ROM programming. If you build the board without the ROM the Nano will load the G-Pascal image into 64K RAM at start-up.

Is there a way to post pictures/drawings here?

picture 1: http://forum.6502.org/download/file.php?id=18790&mode=view
picture 2: http://forum.6502.org/download/file.php?id=18788&mode=view
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Posted by Nick Gammon   Australia  (22,928 posts)  [Biography] bio   Forum Administrator
Date Reply #1 on Thu 24 Aug 2023 08:07 AM (UTC)

Amended on Fri 25 Aug 2023 02:59 AM (UTC) by Nick Gammon

Message
No, but I copied them to my server, so here they are:



- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Nick Gammon   Australia  (22,928 posts)  [Biography] bio   Forum Administrator
Date Reply #2 on Thu 24 Aug 2023 08:09 AM (UTC)
Message
Nice work. :)
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Nick Gammon   Australia  (22,928 posts)  [Biography] bio   Forum Administrator
Date Reply #3 on Thu 24 Aug 2023 08:10 AM (UTC)
Message
Any screenshots/photos of G-Pascal in operation?
- Nick Gammon

www.gammon.com.au, www.mushclient.com
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Posted by Mike Mclaren   (2 posts)  [Biography] bio
Date Reply #4 on Thu 24 Aug 2023 08:35 AM (UTC)

Amended on Sun 27 Aug 2023 02:58 AM (UTC) by Mike Mclaren

Message
I took this screenshot because I was geeked to see G-Pascal running with an 8-MHz clock and 38400 baud bit-banged serial after replacing the Rockwell CPU and VIA with WDC parts.

Picture 3: http://forum.6502.org/download/file.php?id=17073&mode=view

Here's another board photo. The only part I haven't found on-the-shelf at distributors is the 'skinny' 64K RAM but they seem plentiful and relatively inexpensive from an AliExpress vendor (5 for $3.36, including shipping to USA).

Picture 4: http://forum.6502.org/download/file.php?id=18789&mode=view
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Posted by Nick Gammon   Australia  (22,928 posts)  [Biography] bio   Forum Administrator
Date Reply #5 on Fri 25 Aug 2023 03:00 AM (UTC)
Message


- Nick Gammon

www.gammon.com.au, www.mushclient.com
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