Motorola 68000-16 and 68450 chips...

--- Julian Richardson <JRichardson(a)softwright.co.uk> wrote: Was the MC68000-12 rated to 16Mhz, or did people just run it that fast? I remember it was an issue for people who tried to clock-double their A500s. I've seen at least one Amiga peripheral that used a Motorola DMA chip (forget if it was 2-channel or 4-channel). Microbotics SCSI? Software Results had a WAN router box that was never released, that used a 68450 per serial card for high-performance serial (vs the non-DMA 8-port low performance card). I doubt if you got it from that - I have the boxes (and 8-layer boards!) up in the attic. ISTR they used 600 RPM 3.5" drives, too. In the Motorola world, DMA went on the peripheral; in the Intel world, DMA went on the motherboard. -ethan ===== Visit "The Seventh Continent" http://penguincentral.com/penguincentral.html __________________________________________________ Do You Yahoo!? Yahoo! Auctions - buy the things you want at great prices http://auctions.yahoo.com/