I had a Hitachi Processor (HD68000P8) and I replaced it with a Motorola (MC68000P8) and that fixed the issue. No more black screen with J100 closed.
Keep in mind that it does take around 10 seconds or so for it to request the Kickstart disk.
Interesting. We saw some similar shenanigans with that Atari ST's DMA and certain hard drive adapters. CMOS 68000's would work fine, but original HMOS would load the bus with errors.Dragonheart wrote: ↑Sun May 01, 2022 2:23 pmThe issue with J100 is solved:
If you have an Hitachi (HD)68000, J100 will not work and cause a black screen when set.
If you use a Motorola 68000, J100 will work as expected. It doesn’t matter if the CPU is plastic or ceramic, but it has to be an original Moto. Guaranteed.
You mentioned your adspeed didn't work with the parceiro 2. Any chance it's the 68k's fault?McTrinsic wrote: ↑Thu May 12, 2022 3:01 amThe Phoenix Board from back then knows of a similar issue. The manual at Amiga.resource.xx.
On page 11 of the manual, you get this text:
„If your CPU is manufactured by Thomson (…) or Hitachi, the problems of overloading the bus may occur. As the Phoenix Boards‘s SCSI controller and Expansion slot are in effect loading the bus, it is likely that problems will occur. We strongly advise all people to change to a ‚Motorola‘ type to avoid problems.“
So yes, things like these were known back then.
Cheers,
McT
David and I had a similar thought. I changed the CPU out with a spare I had sitting in an A2000 motherboard chip graveyard and had the same results. David and I are looking at a possible solution; I should know in the next couple of weeks (fingers crossed). In the meantime I started looking around for a 68010. I could have sworn I had one, but I can't find it anywhere. I can't remember if I put it in my Phoenix or what the heck I did with it. I wish there was a source online where they could be easily found or I'd pick one up just to have for a backup.You mentioned your adspeed didn't work with the parceiro 2. Any chance it's the 68k's fault?