Search found 693 matches
- 13 Nov 2023 21:32
- Forum: GENERAL DISCUSSIONS
- Topic: Only a week until the Retro-Comptuer Festival. Eek!
- Replies: 22
- Views: 446182
Re: Only a week until the Retro-Comptuer Festival. Eek!
https://www.youtube.com/watch?v=kHdasy0AXuY You get 6 whole seconds in this video!
- 13 Nov 2023 21:01
- Forum: MFX
- Topic: MFX - Installation, Usage, Issues, Questions, Problems
- Replies: 8
- Views: 130840
Re: MFX - Installation, Usage, Issues, Questions, Problems
I found a copy of the data sheet, bit positions 5828 to 5891 are the "signature bytes". So are not part of the fuses that set up the AND/OR logic. An electronic signature (ES) is provided in every GAL22V10 device. It contains 64 bits of reprogrammable memory that can contain user-defined d...
- 10 Nov 2023 15:27
- Forum: SOFTWARE
- Topic: Football Manager
- Replies: 23
- Views: 519421
Re: Football Manager
That doesn't mean a specific fix for any particular game can't be found, but a generic solution was too much for my coding skills.
- 10 Nov 2023 15:23
- Forum: SOFTWARE
- Topic: Football Manager
- Replies: 23
- Views: 519421
Re: Football Manager
The Memotech 14L4 PAA devices were limited to 4 terms per pin. So the 512K SDX only made the ram available to CPM. MFX on the other hand uses a much newer 22V10 and that allows 8 to 16 terms depending on the pin. so the full 512k is available in Basic as well as CPM. PEEK (64122) is 15. However that...
- 10 Nov 2023 13:40
- Forum: SOFTWARE
- Topic: Football Manager
- Replies: 23
- Views: 519421
Re: Football Manager
So, I'm assuming it's because the game loads into the contiguous 32k starting at 8000h and basic/SDX disk routines shrink that 32k to 21k, thus 28k "doesn't fit" in a 64k machine? Pretty much spot on. From my quick look at the MTX, Football manager's 2 game sections load from #8100 to #EF...
- 10 Nov 2023 10:23
- Forum: SOFTWARE
- Topic: Football Manager
- Replies: 23
- Views: 519421
Re: Football Manager
USER MTX can deal with some single stage .MTX files. Anything that more than 1 block of data fails. That's becasue memu can patch the "rom" where the first stage loader make the call to load the next block from tape. On real hardware you can't patch rom, so after the first stage takes over...
- 09 Nov 2023 14:39
- Forum: SOFTWARE
- Topic: Football Manager
- Replies: 23
- Views: 519421
- 05 Nov 2023 10:57
- Forum: HARDWARE
- Topic: Strange behaviour
- Replies: 9
- Views: 19954
Re: Strange behaviour
The edge detection circut on the MTS is based on the 741 op amp. See page 226 of the Phoenix manual. The final stage is a CMOS exclusuve or gate to set the level for the CTC, the rest is analogue and I don't have a clue how it works. I would hope that it was designed to be tolerant of component diff...
- 04 Nov 2023 15:29
- Forum: HARDWARE
- Topic: Strange behaviour
- Replies: 9
- Views: 19954
Re: Strange behaviour
I had a quick look at the Pothole Pete code. The program counter in that panel screenshot is at #8141, when it encouneted a #FF byte that triggered Panel. That's in the middle of some sprite tables, the CPU should never have been running code at that point. If the tape had loaded correctly the byte ...
- 01 Nov 2023 11:17
- Forum: MEMOFEST 2023
- Topic: Memofest 2023, Where and When?
- Replies: 53
- Views: 4317651