On 2024/05/12 8:34 p.m., David Gersic wrote:
On Fri, 10 May 2024 11:30:25 -0700 John Robertson via Techtoolslist <techtoolslist@flippers.com> wrote:
I've had this adapter sitting on a shelf since 2004 and just found a use for it when working on a Zaccaria pinball MPU. The problem is it doesn't work and it looks like the 2650 CPU has to drive INTACK, but it ties low in the original article on pages 9 &10 of TroubleshooterV1-1983-combined-searchable.pdf (on ftp list under Fluke/9XXX/Fluke Troubleshooter Magazine).
Anyone else use this adapter or made one that works for Zac. games? I sent you that one. I never got it to work correctly, though. I had a thread here on it back in 2017.
Right, I have the correspondence but forgot about it. Must be getting older... I also only brought out the two Zac pins in the last few months, didn't have a customer in 2022 for them. Now I do, so getting them all cleaned up - finally. I did find that the INTACK wasn't grounded as shown in the original Fluke Troubleshooter - it was floating, so I shall try tying it high to disable the Data Bus read - that may be my problem. It really looks like it should work. Thanks! John :-#)#
From: David Gersic <info@zaccaria-pinball.com> To: "'Technical Tools Mail List'" <techtoolslist@flippers.com> Subject: [Techtoolslist] Slowing down a Fluke Z80 pod? Date: Sun, 17 Sep 2017 11:38:49 -0500
If you do get it to work, I'd be curious to know how. I don't think INTACK is all that important, at least not for this use. You can('t) run the board with UUT. INTACK only matters if you're expecting INT to happen, and without the CPU actually running, there wouldn't be any use for INT.
-- 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 2005-Current: https://seven.pairlist.net/pipermail/techtoolslist/ Vectorlist Archives 1997/99 - 2016: https://www.vectorlist.org/