5 Jun
2009
5 Jun
'09
4:14 p.m.
On 4 Jun 2009 at 20:03, Tony Duell wrote:
Probably...
The HP9144 (16 track) has a 68B09 and maybe another microcontroller in
it. Which is what I expected given what you find in the HP hard disk
boxes. When I took the conver off that 9145, I was rather suppised by the
big 64 pin DIL package...
The 9145 contains a 68000 CPU and some
battery-backed RAM modules,
and alas some ASICs. One day I'll figure out something about it.
Probably later than my Adic drive, then. It's got a 6800 and a 2716 EPROM with a 3M copyright sticker on it--one of
several cards stacked
up in a little card cage with backplane under and behind the tape
One of the HP drives (I think it's the 9144 went through many revisions
with different numbers of PCBs. Some had 2 boards under the mchanism and,
ITRC, 3 boards for the cotnroller fitted round it, I think the latest
versio had everything on one PCB. Mien is somewhere in the middle...
area. If you stick a traditional DC300/600... tape in
it, it spins
it briefly before announcing with a loud buzz and LED that there's a
fault condition.
I seem to rememebr the HP drives do something similar
-tony