29 Jul
2019
29 Jul
'19
noon
On 6/15/19 2:19 AM, Peter Turczak via cctalk wrote:
In preparation of moving, I dug out a IBM 6150 PC-RT
from my basement.
This was my first proper computer as a child, which was donated to me by
a local company that upgraded their CAD system. So it would be
interesting to bring it back to life.
The machine is equipped with an 320 MB ESDI, 10 MBit Baseband Ethernet
adapter and an IBM Megapel graphics adapter.
This baby was quite a sight in 1993 when I got it, with its elegant
console font designed by Knuth.
Now I'm trying to revive the old machine, but there are some hassles:
The hard disk seems to be stuck or the drives electronics are broken, it
does not spin up. As these drives are quite rare, I'm looking for the
SCSI card (Model 6lX700l). Is it right, the PC-RT can boot off SCSI?
While I made images of the install floppies, it seems the AIX base
system 2.0.0. disk #1 is missing. The AIXWindows floppies where not
imaged and seem to be unreadable. Otherwise all VRM/extendes svcs, etc
floppy images are at hand.
I had a PC-RT awhile back that came with dead hard disks. I got AIX
going with an ISA IDE adapter and a 1GB IDE drive.
This was a long time ago and the details are hazy, but maybe this is
enough to get you started:
I don't remember the nature of the limitations on both IDE adapter
and disk. I do remember that I needed an adapter that allowed disabling
the floppy interface (or didn't have one), that later IDE chipsets did
not work, and that there was one IDE instruction that the disk drive
needed to *not* support. The <2GB Seagate Medalist series were known to
ignore that instruction and my Medalist 1GB worked.
Doc