26 Mar
2001
26 Mar
'01
2:43 p.m.
On 2001/03/26 at 10:59am -0800, RebelTerry wrote:
I'm new to the group. Does anyone have any
information on the old HP
9845 desktop computers, specifically, if any working units still exist?
I have one that works, except that I haven't looked at the tape drives
and the rollers have most likely melted. I'm pretty sure at least one
other list regular has one.
At 8:37pm +0100 2001/03/26, Tony Duell wrote:
How strange is the HP disk format? I know that the HP
disk drive could at
least read IBM3740 disks. Were the HP disks also FM recorded?
I have one of the disk drives (9885 IIRC), but no real information on it.
And I remember there being an HP custom 40 pin chip on one of the boards
that looked to be a CPU type thing.
I have the 9885 service manual, which I'm pretty sure has schematics...
I'll try to get it out and check this weekend.
At 6:09am +1000 2001/03/27, Phil Guerney wrote:
I was told by the HP experts on this list when I first
asked (a year or two
ago) that there is no way known to hook up an external monitor in place of
the original that plugged into those two special ports on the top of the
9845. But you would think that this monitor was basically a standard TTL or
analogue monitior of some sort and that someone might have the technical
details to wire a replacement from the plugs?
I have the service manual for the 9845B too (is yours a B or C?), but
it definitely does not have schematics; it's at the
subassembly-swapping level. It might have the specifications and
pinouts, though; again, I'll try to look it up this weekend. (Someone
remind me privately in a week if I haven't.)
--
Kevin Schoedel
schoedel(a)kw.igs.net