Search found 142 matches
- Mon Jan 29, 2024 9:41 pm
- Forum: Hardware
- Topic: CPLD replacement for ZX8301
- Replies: 223
- Views: 50145
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...
- Mon Jan 29, 2024 8:55 pm
- Forum: Hardware
- Topic: CPLD replacement for ZX8301
- Replies: 223
- Views: 50145
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...
- Wed Oct 11, 2023 5:13 pm
- Forum: Wanted
- Topic: Wanted - Aurora board in working condition
- Replies: 9
- Views: 3850
- Wed Oct 11, 2023 4:46 pm
- Forum: Hardware
- Topic: Close, but no cigar..
- Replies: 20
- Views: 3489
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...
- Wed Apr 12, 2023 8:27 pm
- Forum: Hardware
- Topic: DIY QubIDE Parts list
- Replies: 52
- Views: 16710
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 ).
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 ).
- 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 ...
- 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...
- 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...
- 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.
- Wed Mar 09, 2022 2:04 pm
- Forum: The Off-Topic Section
- Topic: Happy Birthday!
- Replies: 426
- Views: 211979
Re: Happy Birthday!
Thank you.