CompuServe Messages

Richard, Trouble is, in hires-color modes there just isn't much time left for anyone else to access the video RAM. Certainly not for the blitter nor cpu, and a good guess is that the SCSI DMA uses the cpu cycles. Now _perhaps_ CBM got fancy on the A3000 and allowed a transfer mode where (in extreme cases) 16-bits are sent at a time (to the bank side which the video isn't accessing at that moment), but I kinda doubt it. So if the arguments ran that DMA into hires video wasn't much faster than cpu transfers, I could easily go along. But we just don't know yet. It appears to me, however, that CBM is being pretty clever just to say "32-bit SCSI DMA"… because then people grab this buzzword and assume all, on their own, that it's also an absolute panacea for chip ram transfer speed. We need some testing, and tech specs! best – kev