RE: [N8VEM-S100:1599] IMSAI 8080 CPU card replacement

Hi Paul,
I tried emailing you the file, but it came back undelivered

J

From: crus...@hotmail.com
To: n8vem...@googlegroups.com
Subject: RE: [N8VEM-S100:1599] IMSAI 8080 CPU card replacement
Date: Mon, 29 Apr 2013 22:23:33 +0000

Sorry, I don't have an account there to upload.

Date: Mon, 29 Apr 2013 08:27:30 -0400
Subject: Re: [N8VEM-S100:1599] IMSAI 8080 CPU card replacement
From: pbi...@gmail.com
To: n8vem...@googlegroups.com

Yes please. How about creating a new folder in: http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=Other%20Boards

On Mon, Apr 29, 2013 at 12:20 AM, Crusty OMO <crus...@hotmail.com> wrote:

Hi Andrew,

Just thought you would like to see what I've done on one of your prototyping boards.

It's a replacement CPU card for an IMSAI 8080. It uses an 8080A and has the 16 pin socket to connect to the Front Panel.
I put 64K of RAM on the same card and a PIC microcontroller to provide Serial I/O, Floppy Disk emulation on a 8Meg flash chip and a Boot strap program.
It can boot up into CP/M 1.4 all on the same card. I did this because many of the other cards of that era are flakey and I wanted to get the IMSAI 8080 computer at the PC Museum in Brantford, Ontario working.

If anyone wants the full schematic & firmware, just let me know where to upload it.

:)J

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