ISA bus throughput

Tue Jan 31 18:44:59 CST 2006

On 1/31/2006 at 11:58 PM ard at p850ug1.demon.co.uk wrote:

>YEs, that was the idea behind IDE. It's upward compatible with the ST506 
>controller (WD2001 or something like that). I have an IDE card in this 
>PC/AT. It's just a few TTL buffers and a PAL as the address deocder. It 
>uses the mainboard BIOS, there is no extension ROM on that card.

...and ATAPI is sideways-compatible with SCSI. :)