Cheers! I've since solved this problem (RTFM fail on my part!) but got cocky and decided I'd try to support blitter access to the external RAM. Rabbit hole!
I have an old creative microsystems 16MHz board from 1989 for my STFM, it has space for a blitter and FPU. Right now I'm trying to get the pistorm working without success. Unfortunately during testing I broke a pin off the old accelerator I'll have to fix. I would like to find an alt ram add on. I have seen something called a storm (thunder and lightning also) , but it's in German and I can't find much on it.
It's tricky to combine an accelerator and a RAM boad if they're not designed to co-operate. If you place the RAM board 'beneath' the accelerator then you'll only access it at 8MHz. If you place it 'above' the accelerator, you have to make sure the two don't fight. If you really want to keep the blitter socket by using your old board then you'd probably want to look for an expansion that uses SRAM so there is little complexity for them to fight. If you can live without the blitter (I'm disregarding the FPU as 68k+FPU is virtually unsupported by software) then I should have a rev 2 version of DSTB1 on PCBWay in a month or so.
@@thetechnoshed if rev2 with fix is imminent thats great (if there was someone selling them) but an idea for DSTB2 - how about the faster HC68000 that is square and soldered on? Amiga accelerators are getting as high as 56Mhz with those... Could still be small sized board, reasonably priced and usable across the ST range.
@@methanoid Hiya the update is basically I’ve had my rev 2 design running stably for me for a few months, but one user reports significant problems. I’ve not spun a 1.2 board yet, therefore. I could do and ask for more feedback, I suppose. Yes, the PLCC 68k is probably a better chip. Could likely run happily at 33MHz too. I did have an initial DSTB2 design mapped out, but it was a monstrous thing!
oooh! but I'm still waiting for the TurboPower line. Seriously though, awesome work!
Good work as usual 👍🏻
Little of it shown in this video, but many thanks! :D
Have you played Atari today ;) :P
Great progress!!! I might have to swap out my basic 16Mhz CPU mod for this when its available!
Cheers! I've since solved this problem (RTFM fail on my part!) but got cocky and decided I'd try to support blitter access to the external RAM. Rabbit hole!
I have an old creative microsystems 16MHz board from 1989 for my STFM, it has space for a blitter and FPU. Right now I'm trying to get the pistorm working without success. Unfortunately during testing I broke a pin off the old accelerator I'll have to fix. I would like to find an alt ram add on. I have seen something called a storm (thunder and lightning also) , but it's in German and I can't find much on it.
It's tricky to combine an accelerator and a RAM boad if they're not designed to co-operate. If you place the RAM board 'beneath' the accelerator then you'll only access it at 8MHz. If you place it 'above' the accelerator, you have to make sure the two don't fight. If you really want to keep the blitter socket by using your old board then you'd probably want to look for an expansion that uses SRAM so there is little complexity for them to fight. If you can live without the blitter (I'm disregarding the FPU as 68k+FPU is virtually unsupported by software) then I should have a rev 2 version of DSTB1 on PCBWay in a month or so.
@@thetechnoshed any news maestro??
@@thetechnoshed if rev2 with fix is imminent thats great (if there was someone selling them) but an idea for DSTB2 - how about the faster HC68000 that is square and soldered on? Amiga accelerators are getting as high as 56Mhz with those... Could still be small sized board, reasonably priced and usable across the ST range.
@@methanoid Hiya the update is basically I’ve had my rev 2 design running stably for me for a few months, but one user reports significant problems. I’ve not spun a 1.2 board yet, therefore. I could do and ask for more feedback, I suppose. Yes, the PLCC 68k is probably a better chip. Could likely run happily at 33MHz too. I did have an initial DSTB2 design mapped out, but it was a monstrous thing!
@@thetechnoshed thank you good sir.. and very excited about DSTB2 potential too 🙂