29 Jun
2004
29 Jun
'04
11:30 a.m.
Interesting day at the auction.
The Data General Aviion 9500+ went for a whopping $17.00. The pallet of
ultrasparc's went for $300, (way over my budget), but I walked out with a
pdp11/73 in a BA11 case.
And the mystery box. A black DEC BA11-m case with a dark camo-green panel and
3 qbus cards, a DRV11-b, a dual qbus card with two 20 pin berg connectors. No
I.D. except for the stencil EXTREL 500869 C-81, I have no idea maybe a floppy
controller or a serial card.
And finally A Quad height Qbus board with a Motorolla MC68000l12 processor and
a paper label at the bottom of the board that says:
590139
BUS CPU
REV A
EXTREL 2MHZ
It also has 2 Zilog Z80 chips a
Z80B CTC and a
Z80 UART
So is this a motorola 68K Qbus board??
Can Anybody enlighten me. Any documentation, a quick google search found very
little .It probably was part of a instrument that was sold in another lot.
I picked this one up as I spotted the ba-11 qbus box.
Cheers
Tom
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29 Jun
29 Jun
11:42 a.m.
OOPS, that should have read 12MHZ. It also has two 34 pin connectors and one
20 pin connector that apparently is the serial out.
tom
Tom Ponsford wrote:
Interesting day at the auction.
The Data General Aviion 9500+ went for a whopping $17.00. The pallet of
ultrasparc's went for $300, (way over my budget), but I walked out with
a pdp11/73 in a BA11 case.
And the mystery box. A black DEC BA11-m case with a dark camo-green
panel and 3 qbus cards, a DRV11-b, a dual qbus card with two 20 pin berg
connectors. No I.D. except for the stencil EXTREL 500869 C-81, I have no
idea maybe a floppy controller or a serial card.
And finally A Quad height Qbus board with a Motorolla MC68000l12
processor and a paper label at the bottom of the board that says:
590139
BUS CPU
REV A
EXTREL 2MHZ
It also has 2 Zilog Z80 chips a
Z80B CTC and a
Z80 UART
So is this a motorola 68K Qbus board??
Can Anybody enlighten me. Any documentation, a quick google search
found very little .It probably was part of a instrument that was sold in
another lot.
I picked this one up as I spotted the ba-11 qbus box.
Cheers
Tom
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---
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the beginning.
5:48 p.m.
On Tue, Jun 29, 2004 at 01:30:39PM -0700, Tom Ponsford wrote:
And finally A Quad height Qbus board with a Motorolla
MC68000l12 processor
and a paper label at the bottom of the board that says:
590139
BUS CPU
REV A
EXTREL 2MHZ
It also has 2 Zilog Z80 chips a
Z80B CTC and a
Z80 UART
So is this a motorola 68K Qbus board??
I don't recall anything about "Extrel", but unless this card was at the
top of the bus, it was a peripheral card, not the primary CPU (you have
to put the CPU at the top because boards "above" the CPU wouldn't be able
to break the grant chain for interrupts or DMA requests).
The Software Results COMBOARD was a peripheral for the Unibus, Qbus or
VAXBI bus with a 68000 (or 68010) on it. Since we spoke sync protocols
out the serial port(s), we had either a COM5025 or a Zilog Z8530, so seeing
a Z80-family UART on this board isn't all that strange.
IIRC, the DMB32 has a 68000 as well.
The other peripheral CPU I've commonly seen is the T-11 - DEC used it on
several cards, as did Simpact (a Software Results competitor). I even
have a Simpact card, but no software.
So what sorts of connectors are coming off the top of the board? 40-pin
Berg connectors were commonly used for serial ports (DL11E, DUP11, DUV11...)
but with a 3rd party board, there's no standard.
-ethan
--
Ethan Dicks, A-130-S Current South Pole Weather at 30-Jun-2004 02:40 Z
South Pole Station
PSC 468 Box 400 Temp -89.3 F (-67.4 C) Windchill -129.4 F (-89.7 C)
APO AP 96598 Wind 10.1 kts Grid 082 Barometer 670.1 mb (11001. ft)
Ethan.Dicks(a)amanda.spole.gov http://penguincentral.com/penguincentral.html
2:14 p.m.
Hi All
Ethan Dicks wrote:
> So what sorts of connectors are coming off
the top of the board? 40-pin
> Berg connectors were commonly used for serial ports (DL11E, DUP11, DUV11...)
> but with a 3rd party board, there's no standard.
One 20 pin and two 34 pin connectors
The board looks like it also contains a small amount of ram.
Cheers
Tom
.
> -ethan
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---
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I don't recall anything about "Extrel", but unless this card was at the
top of the bus, it was a peripheral card, not the primary CPU (you have
to put the CPU at the top because boards "above" the CPU wouldn't be able
to break the grant chain for interrupts or DMA requests).
The board was at the top of the bus. I'm pretty sure this is not a peripheral
board. The fact that it says on a paper label "QBUS CPU" lead me to beleive
this is the primary cpu board.
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tponsford＠theriver.com