Found something: Re: Q-bus boards I need ID of...

From: Christian Fandt <>
Date: Thu Jul 16 12:07:30 1998

At 16:01 15-07-98 -0400, Chris Fandt wrote yesterday:

>There are actually three boards I need to ID, the third is possibly a tape
>controller. Here's the rundown:
>#1 A Q-bus dual width board made by DTC. Has a 50-pin header next to a
>single ejector handle. All TTL chips, no LSI or CMOS devices. Two 8-section
>DIP switches on board. Only markings are a FAB, ASSY, REV and S/N numbers.
>The ASSY number is 007-00002.
>Could this be a Q-bus SCSI board (I hope, I hope, I hope)? But there's no
>CPU or ASIC, etc. onboard to handle DMA, SCSI device protocoll, etc. :( An
>appropriate driver in conjunction with the OS would have to do this.

Two things I discovered that *may* help ID the DTC board:

1. An 8" floppy disk amongst about 120-130 of them found in the great
haul which has a hand-written label: "RT-11 DTC-11-1 To IOMEGA ALPHA
10.5 SCSI"

2. Based on findings in #1 and after seeing a post answering Megan's query
as to places to check out in Silicon Valley, I looking at the URL for the
suggested Wierdstuff and found a listing for of all things, an IOMEGA ALPHA
10H. (see: if you want to see
what older and/or "classic" drives they've got)

So, could this then be for sure a model DTC-11-1 SCSI (or even SASI)
module? (DTC has nothing on their website for Q-bus-anything.)

I'll call the contact person re this IOMEGA drive and see how much
Wierdstuff wants for it. There are about 15-20 10MB IOMEGA disks that I got
in the heap.
>#2 A Q-bus quad width board of unknown manufacture. Two 50-pin headers at
>handle-edge of board. A marking on the component side says it's a "Q
>BUS/LEXID INT." with a number 77D609871P1 under it. A number stamped on the
>backside is "GE77D609871G1" with "SER NO- 44" under it. Those part numbers
>look like old GE part numbers. Did General Electric make any equipment for
>the DEC world?

Still have nothing on this board. Could it be an OEM module of some sort?
Someday, later this winter, I'll do one of my complete reverse-engineerings
of this thing (like good old Tony D. does also) and try to see what it's

Hey! If it's Unibus and if it is useable as simply a digital I/O interface
module, then I'll use my 11/34A as the host in the Home Security and
Environmental Control System that I'm brainstorming! (Well, gotta have
some fun anyway. Better than the 8052 microcontroller chip-based thing I
was planning to use.) <g> [Okay, joke-mode is off now... ]

>#3 This is what I feel is an Archive tape controller. It has "ARCHIVE
>CORP. Copyright 1983" silk screened onto the component side. No other
>numbers on the silk screen, dang it. It is 5.5" x 7.75" with a 50-pin edge
>connector (marked "J1") on one 5.5" end and a 50-pin header (marked "J3")
>at the other end. "J2" is a 4-pin recepticle which is the same as the power
>connector on a 5.25" floppy or hard drive and is on the edge connector-end
>of the board. The EPROM label has 80182-010 on it. Has an 8031
>microcontroller chip, an 8155 and an Archive LCC ASIC plus a bunch of TTL
>and one small CMOS RAM chip (Mitsubishi M5M2167P-70). Other numbers found
>on the board seem to be component part numbers however there is a
>hand-written number on the solder side which is 80158-013/A. Could this be
>an important identifying number?

Archive is basically dead in that they have been absorbed by the
Conner/Seagate mess and probably no legacy info had been carried onward :(
 So, I'm still looking to confirm this thing.

>I want to try to identify these boards to see if theyt are useable in the
>systems I'm keeping, especially item #1.
>Thanks for the help.
>-- --
>Christian Fandt, Electronic/Electrical Historian
>Jamestown, NY USA
>Member of Antique Wireless Association
> URL:
Christian Fandt, Electronic/Electrical Historian
Jamestown, NY USA
Member of Antique Wireless Association
Received on Thu Jul 16 1998 - 12:07:30 BST

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