PC Ephemera

Tony Duell ard at p850ug1.demon.co.uk
Thu Oct 27 14:16:47 CDT 2005

> Did anyone ever see fit to make a cassette interface compatible with 
> that of the 5150 that was on a card?

Not that I know of, but it should be possible. As you may know, there 
were BIOS routines to access the cassette port (I forget the number, INT 
15h ?). They simply return without doing anything on the XT (and AT). A 
BIOS extension ROM could intercept that interrupt vector and drive a 
cassette port.


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