On 2023/05/24 12:59 p.m., davids@oz.net wrote:
I have a missile command board which using the fluke 9010 passes all memory and rom tests perfectly. Also can exercise the pokey with no problem.
But when I try to go to UUT the game just starts to make an explosionish sound and then watchdogs. Game mode and test mode.
Verified the WD is working correctly.
So my next thought was to connect the 16702B to the CPU address and data lines and see if I could figure out where the startup goes off the rails. Not supper excited about having to use the test clips on 16 bits of address, 8 bits of data and misc other signals.
Realizing there is that nice juicy edge connector right next to the CPU I was thinking about having an adapter board made that would have and edge card and then a set of pod connectors that I could just plug the pod cables into directly.
This connector was for the Atari CAT BOX, (and I assume a similar test tool was available for Midway games like Galaxian and Pacman - not that I ever saw one) I've thought it would be nice to have a plug for the Fluke to use that. Of course the 6502 has to be removed as it doesn't have an easy way to float the Address or Data lines. John :-#)#
Am I reinventing the wheel here? Anyone done this and have any gotchas to mention?
Or am I over thinking this and should just get a 40 pin glomper clip and attach to the top of the CPU? And connect to that?
David
-- John's Jukes Ltd. 7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 Call (604)872-5757 (Pinballs, Jukes, Video Games) flippers.com "Old pinballers never die, they just flip out" _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ftp.flippers.com/TTL/TestEquipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/