One of today's acquisitions is a small card for an Apple ][ (or Apple ///),
labelled "APPLE 2/3 XEBEC INTERFACE REV 1".
I happen to have a couple of old Xebec ST412 winchester controllers, so I'd
like to try this out.
Can anyone tell me the pinout of the 26-pin header at the end of the card?
Pins 3,7,11,15,17,19,21,23,25 are grounded, the other seventeen seem to be
signal lines. Pins 1,5,9,13,20 are high impedance; the other even-numbered
pins are terminated by a 220/330R resistor pack.
Does it need any other software (like a formatting disk)? The on-board 4K
EPROM contains only the strings "(C) HAL COMPUTERS LTD 1983", "A/XHAL
SHARED RESOURCE WINCHESTER SYSTEM", "NOT CONNECTED", and "SRS ERROR", so I
guess there would have been a floppy with it, originally.
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
Received on Sat Apr 17 1999 - 06:02:20 BST