No docs here, but it sounds like a floppy or hard disk controller
(ST-506).
The MC6821P is the 1MHz (slowest) version of Motorola's PIA (parallel
interface adapter) for the 6800 family of 8-bit-processors, that's for
sure.
Andreas
Joe wrote:
>
> Does anyone know exactly what a Smoke Signal Broadcasting DCB-4E cards are
> for? It's and EXORbus card and has a MC6821P and a WD FD1791B-02 LSICs and
> a lot so SS TTL ICs on it. Does anyone have data for the card?
>
> Joe
--
Andreas Freiherr
Vishay Semiconductor GmbH, Heilbronn, Germany
http://www.vishay.com
Received on Fri Feb 01 2002 - 09:23:01 GMT