*** M E M O R U M ***

Martin A wrote: ↑

11 Feb 2020 00:03

So, is anyone else ready to take up the challenge ?

Almost

It’s on somewhat lengthy “to-do” list!

Bill,

I can send you a known working 7128S if you like, that would eliminate a locked out jtag port problem

Regards
Dave

Bill,

are you sure of the CPLDs? Some of the ones that I got from Lez had the JTAG ports locked out, if that is the problem, there is no way to reset them without an Altera Master Programmer - which are unobtanium these days.

If you are using Quartus, what is the error code/message?

regards
Dave

AD724JR SOP-16, £1.44 from China in singles, less for 5 or 10 pieces

regards
Dave

Well, not everyone

Hi Pedro,

those EPROMs sould be OK - this page might help . ..

http://primrosebank.net/computers/mtx/c ... s/roms.htm

(Check the pinning of the links)

I'll try an dig out a copy of the ROMs later, or you could use a Test ROM

regards
Dave

Hi Lars,

thanks for that - I have posted a copy here:

http://primrosebank.net/computers/mtx/m ... _files.htm

regards
Dave

Is this any help?

http://www.cpcwiki.eu/forum/programming ... ner-14445/

http://arcadegamedesigner.proboards.com ... d-releases

Hi Bill, I agree with Martin, it's always nice to get extra "Memotech" software and I am likely to have a little play with it, but does it justify your efforts ? - probably not. Still, on these long, cold, winter nights, you'll need something to keep you busy :-) Hitch-hikers guide is available for ...

If you need help, please post a photo of the “artefacs”, a corrupted display is almost certainly due to one or more faulty Video RAMs, See here : http://www.primrosebank.net/computers/mtx/repairs/vram/mtx_vram_repair.htm Or here : http://www.primrosebank.net/computers/mtx/repairs/mtx512s2/video_faul...