Strange Qbus cards: Data Systems Design and Marconi

From: Eric Smith <>
Date: Fri Oct 3 19:08:49 2003

"Fred N. van Kempen" <> asks about:
> - two Data Systems Design cards.. half-height, some RAM, some PROMs
> and a fair bit of logic. One 16Mhz xtal. One connector (28 pins
> or so)

Most likely one of their floppy subsystem controllers, possibly for
a DSD 440. It's software-compatible with an RX02, but you have to have
their drive box as the cable interface isn't compatible with anything
Received on Fri Oct 03 2003 - 19:08:49 BST

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