7 Nov
2016
7 Nov
'16
2:19 p.m.
I still need to post the final schematic. A new thread might be a good
idea.
I wanted to keep the board as simple as possible so one could just
wire wrap or point to point it.
It only has a 7474, 7402 and a 7404 as well as the EPROM.
It could easily be done with a GAL or PAL and the EPROM.
I think two schematics showing each would be best.
Dwight
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Ali <cctalk at
ibm51xx.net>
Sent: Sunday, November 6, 2016 10:25:16 PM
To: 'General Discussion: On-Topic and Off-Topic Posts'
Subject: RE: KIM-1 Debugging tool
I've been making a debugging ROM board to test out
the various
parts of the KIM-1. It is based on taking over the KIM at reset
and running test.
So far I've got two test working. One is a basic, is it running test
that just blinks a light on the debug board.
The next is a test of the first 1K of RAM.
A little tricky to do without RAM.
I expect to write some more for the RRIOT ics.
If anyone has interest, they can follow me on the Vintage
Computer Forum or contact me here.
The board has 3 ttl ICs, a 2764/27128 EPROM, a couple
LEDs and a dip switch. Also a few pullup resistors and capacitors.
Dwight
Dwight,
That is a pretty cool project. May I suggest you break it out on VCF into
its own thread so people can more easily follow what is going on? For those
interested in the original thread:
http://www.vcfed.org/forum/showthread.php?52155-KIM-1-No-Action/
-Ali