Good haul of old pc stuph
cclist at sydex.com
Thu Dec 15 11:43:05 CST 2005
On 12/15/2005 at 9:52 AM Allison wrote:
>All it took was a 8bit/16bit trnaslation usinga pair of latches
>and some buffers. the only part of IDE thats actually 16bits
>wide is data transfers, the registers are bytes. The MFM
>controllers of the time had the same register layout. The
>WD1003 was likely the best known ISA16 (WD1002 was the ISA8
>version) controller for MFM and it's just like talking to
>an IDE drive.
Quite a number of the early IDE drives would also support 8 bit data
transfers if IOCS16- wasn't pulled low. Somewhere on the web, there's a
site from someone who's compiled a list of these. Many early sound cards
included an extra IDE port for the purpose of hooking up a CD drive.
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