changing PC floppy port address
cclist at sydex.com
Mon Feb 20 18:54:55 CST 2006
On 2/20/2006 at 11:25 PM ard at p850ug1.demon.co.uk wrote:
>A few IBM cards decoded more of the lines. I forget which ones, but I
>think it's one of the 'lab I/O' cards, either the GPIB card or the data
>acquisition adapter. And IIRC, the addresses for the second, third, etc
>card of the same type differed in the values of some of A10-A15
The DAA decoded 12 bits of the address bus and so allowed up to 4 DAAs.
Same for the cluster adapter and GPIB. AFAIK, no XT adapter decoded all 16
bits of the address bus, though some third-party devices certainly did.
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