11 Mar
2000
11 Mar
'00
11:53 a.m.
I have a few too many CBM 8032's (12" green screen, full size
non-graphics keyboard, 32K memory) sitting in my closet. Please
contact me if you're nearby, and interested in one. Will trade for
non-vintage Intel stuff.
I also have a Trimm- or Sigma- pedestal style 11/73 system with TK50,
RQDX3/RD53, RX50's. Its a beautiful piece, but I need something much
more compact, like a desktop BA23ish enclosure or VT103.
I only have 700' of living space to play with, and the aesthetics corps
is frowning.
Elmo
11 Mar
11 Mar
2:03 p.m.
Eliot Moore wrote:
I also have a Trimm- or Sigma- pedestal style 11/73
system with TK50,
RQDX3/RD53, RX50's. Its a beautiful piece, but I need something much
more compact, like a desktop BA23ish enclosure or VT103.
Jerome Fine replies:
Be careful if you are considering a VT103. The original DEC backplane
was only 18 bits (only 256 KByte of memory) although if you are handy
with a soldering iron, the extra wires can be added to make it 22 bits.
ALSO, the unit is VERY under powered. The DEC specs say only 16 amps
on the 5 volts which also includes the video interface and the AVO option
if you want a full screen 132 character display. I suggest that if you use
a Quad 11/73 with the RQDX3, you are probably OK. But not much else.
Put any hard drives on an external PC power supply.
Sincerely yours,
Jerome Fine
9:03 p.m.
New subject: Compact QBus Systems (Was re: Los Angeles: Commodore PET 8032's...)
Jerome Fine wrote:
Jerome Fine replies:
Be careful if you are considering a VT103. The original DEC backplane
was only 18 bits (only 256 KByte of memory) although if you are handy
with a soldering iron, the extra wires can be added to make it 22 bits.
ALSO, the unit is VERY under powered. The DEC specs say only 16 amps
on the 5 volts which also includes the video interface and the AVO option
if you want a full screen 132 character display. I suggest that if you use
a Quad 11/73 with the RQDX3, you are probably OK. But not much else.
I no longer need 132 columns to be fulfilled, so the AVO can be omitted.
I'd be attempting a dual 11/73, NS 256Kb, Sigma DLV11, and CMD 220 TM SCSI. If
that doesn't work, I'll try taking out the DL and memory and using an MXV11,
though I recall those only have 32Kb or 128kb, which would make it pretty
difficult to run RSTS/E.
Put any hard drives on an external PC power supply.
Good advice for _any_ qbus system. I learned that the hard way, running 4-5
SCSI devices (2 sets mirrored) in a BA23 chassis, and wondering about the
mysterious lockups. External drive chassis eliminated those, though cable
lengths became very critical.
What I'm really hoping for is what was I think called a BA23-SE or BA11-SE,
'twas a desktop 4-slot enclosure, maybe even 4x2?
Regards,
Eliot
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