Search found 142 matches

by tetroid
Mon Jan 29, 2024 9:41 pm
Forum: Hardware
Topic: CPLD replacement for ZX8301
Replies: 223
Views: 50097

Re: CPLD replacement for ZX8301

I use ZX8301_160smd.zip from the post : Very good! Try the last version of program for your pcb version I attached. I fixed a video bug since we talked. AD724 version, metal oscillatos is temporary solution :) 4-pin connector - power for programming. https://pic.maxiol.com/thumbs2/1706563802.1551891...
by tetroid
Mon Jan 29, 2024 8:55 pm
Forum: Hardware
Topic: CPLD replacement for ZX8301
Replies: 223
Views: 50097

Re: CPLD replacement for ZX8301

Hi. Does anybody try this CPLD replacement to use with the SGC ? I see a lot of artefacts on the screen. https://pic.maxiol.com/thumbs2/1706561435.1551891701.img20240130032934.jpg https://pic.maxiol.com/thumbs2/1706561496.1551891701.img20240130032936.jpg https://pic.maxiol.com/thumbs2/1706561527.155...
by tetroid
Wed Oct 11, 2023 5:13 pm
Forum: Wanted
Topic: Wanted - Aurora board in working condition
Replies: 9
Views: 3850

Re: Wanted - Aurora board in working condition

Pr0f wrote: Tue Oct 10, 2023 7:31 am As per the title - does anyone have a working Aurora board?

One careful owner preferred ;-)
I have yellow bare PCB, I can ship to you, it's free, in any case you can't pay to Russia.
by tetroid
Wed Oct 11, 2023 4:46 pm
Forum: Hardware
Topic: Close, but no cigar..
Replies: 20
Views: 3487

Re: Close, but no cigar..

Hi Anyone - if you have an Aurora board to hand - are you able to post a detailed closeup picture of the top and bottom of the PCB in the area of the QAG (this is the smaller CPLD chip near the OS ROM socket on Aurora - ideally including the ROM socket (with chip is fine) and the bottom of the larg...
by tetroid
Wed Apr 12, 2023 8:27 pm
Forum: Hardware
Topic: DIY QubIDE Parts list
Replies: 52
Views: 16700

Re: DIY QubIDE Parts list

GALS, part list and ROM in attacment.

ROM pins 28 and 1 - Vcc

What ROM chip you have ?
For 27C256 you need to use the second half of the ROM chip ( $4000 - $7FFF )
For 27C512 you need to use the last quarter of the ROM chip ( $C000 - $FFFF ).
by tetroid
Sun Apr 02, 2023 7:53 pm
Forum: Hardware
Topic: Memory Expansion / Disk I/f currently available ?
Replies: 15
Views: 3547

Re: Memory Expansion / Disk I/f currently available ?

Yes, recently I was able to solve the INGOT20/21 problem. Amazing. To reverse engineer the SGC logic without sourcecode is a fantastic achievement. Congratulations and applause to you! :D It is also a very beautiful board. I like that you are using through-hole components whereever possible. Keeps ...
by tetroid
Sun Apr 02, 2023 2:37 pm
Forum: Hardware
Topic: Memory Expansion / Disk I/f currently available ?
Replies: 15
Views: 3547

Re: Memory Expansion / Disk I/f currently available ?

Hi Tetroid! Good you are still here and best wishes. :) :) :) Does that mean you've been able to reverse engineer the SuperGoldCard's EPM1810 and move the logic into a EPM7128? Congratulations then! Sorry if you wrote about that previously and I missed it. Peter Yes, recently I was able to solve th...
by tetroid
Sat Apr 01, 2023 1:41 pm
Forum: Hardware
Topic: Memory Expansion / Disk I/f currently available ?
Replies: 15
Views: 3547

Re: Memory Expansion / Disk I/f currently available ?

As far as I know the only combined disk/RAM was the Trump card clone from Siberia, but he can no longer send those, for obvious reasons, so 2nd hand is the only way. Shipping - no problem ( except Poland and Finland in Europe, South America, Australia, New Zealand ). Payment - problem, only via non...
by tetroid
Sat Apr 01, 2023 11:17 am
Forum: Hardware
Topic: Memory Expansion / Disk I/f currently available ?
Replies: 15
Views: 3547

Re: Memory Expansion / Disk I/f currently available ?

Derek_Stewart wrote: Sat Apr 01, 2023 9:05 am Hi,

Maybe an existing disk interfaces could be reverse engineered, what would be the interface required, bearing in mid the Super/Gold Card suffer from custom chips that maybe unavailable.
:) :) :)

Image
by tetroid
Wed Mar 09, 2022 2:04 pm
Forum: The Off-Topic Section
Topic: Happy Birthday!
Replies: 426
Views: 211455

Re: Happy Birthday!

Thank you.