6 Apr
2003
6 Apr
'03
4:22 p.m.
--- Tony Duell <ard(a)p850ug1.demon.co.uk> wrote:
Third-party contollers (mostly Qbus) that linked SA800
drives to DEC
machines had a fair amount of logic on the card, often including a pair
of 2901 ALUs and a 2910 sequencer.
I have one of those - came in a DataRAM box with a DEC CPU and 3rd party
peripherals (RAM, serial, DQ614, watchdog board). Nice cabinet. Room
for two Tandon TM8xx drives up front (I have one) and a FH 5.25" ST-506
drive buried inside - all before DEC released the BA23, so an embedded
disk was somewhat novel.
I'll have to see what's on the floppy board. I remember attempting to
use it, back in the day. We were trying to format blanks in it with a
low success rate (c. 1985). Turns out there was a cold solder joint
on the TM8xx power connector that finally lifted clean off. I tacked
it back down and it stopped burping.
-ethan