Search found 591 matches

by Mask of Destiny
Wed Jan 31, 2007 5:20 am
Forum: Super 32X
Topic: Master SH2 BIOS
Replies: 11
Views: 7418

CAS latency has nothing to do with there being 2 processors on the bus it's a property of the RAM itself. Setting it to a lower value might work on some 32X units and it might not work on others or it might work on none of them as you'll probably be pushing the RAM chips out of spec. I was talking w...
by Mask of Destiny
Wed Jan 24, 2007 5:29 am
Forum: Mega/SegaCD
Topic: CDROM reading speed
Replies: 24
Views: 16108

Are you using DMA for your transfers? The 68K is so slow when it comes to doing memory access I would imagine it could become quite a bottleneck. I never quite got around to looking at how the various FMV enabled games did their DMA. I would imagine that you would need to get the DMA copy of the fir...
by Mask of Destiny
Sat Jan 20, 2007 3:29 pm
Forum: Collaboration
Topic: Megadrive multipart demo
Replies: 27
Views: 11240

Umm, then we need to tell ppl to dont use hint... too complex to drive with accurency on segacd. If the demo is less than 53K or so, it's not complicated at all. Even if it's bigger than that, all you need to do is move the HInt handler to Genesis RAM. (i was too shocked by segacd hardware interupt...
by Mask of Destiny
Sun Dec 17, 2006 7:24 pm
Forum: Video Display Processor
Topic: Is DMA useful ?
Replies: 30
Views: 12858

Your advise is to use 68k for 4 tiles (128 bytes). But the CRAM is 128 bytes. So, to reload CRAM during active display, I could use 68k, couldn't I ? Depending on the situation, DMA can be useful for transfers as small as 16 bytes (8 CRAM entries). There's a fair bit of setup involved in preparing ...
by Mask of Destiny
Sun Dec 17, 2006 7:15 pm
Forum: Megadrive/Genesis
Topic: Genny and 3D
Replies: 138
Views: 38362

Silpheed is the best looking 3D on the Genesis, but that is helped a lot by the Sega CD processor, I believe. Using the Sega CD, I wonder if the Sub CPU could handle all of the rotation and translation, and the Main CPU handle the rendering? I would imagine that it used the Sega CD graphics chip fo...
by Mask of Destiny
Thu Nov 30, 2006 6:31 am
Forum: Mega/SegaCD
Topic: New Transfer Suite Version Coming Soon...
Replies: 0
Views: 3411

New Transfer Suite Version Coming Soon...

I've finally gotten back to working on my Sega CD transfer suite so far I'm planning the following new features: -Revampped underlying protocol resulting in -Faster Transfers (yet to be tested whether this is actually true, but it should be) -More robust transfers (you won't have to make sure you st...