OASIS/Jim She's Dead (was Altos "Serie 5" 5-AD Computer)
No OASIS, MP/M was loaded on the hard drive.. There are no disks. My first
goal was to back up the data on the hard drive....but..
The system died last night. I had it up for a few hours and then tried a
disk read...The system started making noises flashed a bunch of parity error 96
messages on the screen...and never came back to life.
I opened up the box, but I'd have to take the whole thing apart to diagnose
the problem, so I stopped. I am pretty sure the hard drive (Seagate 506) is
OK, but something is preventing the boot sequence from initiating. The fan
comes on the system light comes on, and that's about it. I believe that the
system is serviceable, maybe. Frustrating. It's always a shame to lose a cool
To make myself feel better I took two broken Commodore 64's apart and made
one working one. :-)
- there's a good possibility you just need a new ram chip, specifically
the ninth in the series, in fact, the parity chip. Really knowing
nothing about computers or electronics way back when, my Tandy 2000
displayed a "memory parity error" on the screen in the middle of a
chess game. I pulled out the memory daughterboard, which granted was
alot easier then working off the motherboard, and desoldered what I
believed to be the parity chip, soldered in a socket, and plugged a
fresh 4164 or whatever into it. Sho' 'nuff, it came back to life. Had
to learn how to use a desoldering wick and all. And keep in mind, the
best way to desolder something is to add a little solder first.
It could be any of the ram chips though actually I suppose, or another
problem altogether. But I'm guessing it's likely that.
And one day I'm going to invest in a desoldering station. I'd have to
say a must if you're going to be working on this stuph.
--- In email@example.com, billdeg@a... wrote:
> The system died last night. I had it up for a few hours and then
>...The system started making noises flashed a bunch of parity error 96
> messages on the screen...and never came back to life.