On 24/05/2018 00:59, Mia Magnusson wrote: > But not worth the effort with a mechanical disk, as even only using > half the capacity will be enough for any disk you'll find in the junk > box. No good for data transfer though & supporting 16 bit transfers is pretty trivial hardware wise. > You will not gain anything by using the various "DMA" modes on an > IDE/CF disk with a 1MHz 6502 system as the disk is faster than the > computer even in the disks slowest mode. You would gain quite a bit. A 6502 copy loop will take something like 14 cycles per byte to copy, while using DMA you should be able to average 1 cycle per byte. The fastest possible system would use another CPU for handling the file system and just DMA the data into and out of RAM.Received on 2018-05-24 15:01:54
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