[Techtoolslist] Anyone else make Mike Coates 2650 - Z80 adapter?

[Mike Coates]

Nowadays it has moved

https://macros-arcade.com/fluke-z80-to-s2650-pod-converter/

It works on a Zaccaria Invaders PCB, which is all I have ever used it on.

If you get INTACK working let me know, I can always update the layout
(especially if the gates needed are already on there!)

Mike

On 10/05/2024 19:48, John Robertson via Techtoolslist wrote:
> INTACK is INTerrupt ACKnowledge and is generated by the 2650. So, how
> does one get that out of a Z80 I wonder...
> Reading Osborne's excellent An Introduction To Microcomputers Volume 2,
> Some Real Microprocessors says this on page 7-10:
>
> I'll try that  - I think there is a spare gate or two I can use..
>
> If it works I'll report back!
>
> John :-#)#
>
> On 2024/05/10 11:30 a.m., John Robertson via Techtoolslist 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?
>>
>> Here is Mike's article:
>>
>> web.archive.org
>>
>> S2650 Fluke Adapter <#>
>>
>> 🔗
>> https://web.archive.org/web/20150929213440fw_/http://www.arcades.plus.com/s2650_fluke_adapter.htm <https://web.archive.org/web/20150929213440fw_/http://www.arcades.plus.com/s2650_fluke_adapter.htm>
>>
>>  Thanks!
>>
>> John :-#)#
>>
>