moving cleanout - partial DECmate I / VT278
COURYHOUSE at aol.com
COURYHOUSE at aol.com
Mon Jul 20 03:02:22 CDT 2015
what is condition of the mod 100 trs 80? more concerned abut visual as
it would go in a tools of the journalist over at the univ or if anyone
else has one they could toss in a box and send this way. They were one of
the early "issued items" to some reporters to phone home stories. When
about it... the 'tools of the journalist' throughout the ages makes for a
pretty interesting display especially when you take in to account print,
radio and television.
the dec may be to much to box and mess with and I certainly can't
make the road trip although it has to be better than our 104 degree
In a message dated 7/20/2015 12:22:27 A.M. US Mountain Standard Time,
hilpert at cs.ubc.ca writes:
On 2015-Jul-19, at 10:45 PM, couryhouse wrote:
> What are you going to do with it?Looking. For a wt78 but.... this fell
in our lap....
While I did expect DEC-anything would attract more interest, I was
figuring people would have read my message from earlier in the day, here's the
So my house sold yesterday after < 3 days on the market (the market here
I have about two months to move, so a bunch of stuff has to disappear.
Location is the Vancouver, BC, Canada region (Port Moody more precisely).
Most of this stuff is larger and I'm not going to have a lot of time to
pack & ship, so local pickup is expected.
If there is competition for something I guess it goes to the one willing
to offer the greater number of bucks,
otherwise items are free as the alternative destination is recycling/scrap.
Any bucks involved are not because I expect a lot (or anything), but just
to sort out who 'values' it the most
if there is multiple interest in an item.
I reserve the right to be whimsical in any decision.
At this point three (distant) parties have inquired about this item.
No, I don't want to scrap it, but I can't make promises for shipping
something this size at this time.
If someone is "really interested" (you have the other bits for example),
let me know.
Shipping just the CPU board may be another option.
(There has been no interest in all the other stuff at this point except
the TRS-80 M100 and a question about the XT-clone.)
> -------- Original message --------
> From: Brent Hilpert <hilpert at cs.ubc.ca>
> Date: 07/19/2015 9:29 PM (GMT-07:00)
> To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
> Subject: Re: moving cleanout - partial DECmate I / VT278
> Further to my earlier message today, something else to go:
> DECmate I / VT278 monitor & CPU
> This is the VT100 monitor/housing with the 6120-PDP8-microproc-based
CPU board in one of the logic slots.
> Sadly, missing the keyboard and floppies unit, so it's not complete.
> IIRC, I faked a keyboard-present signal at the keyboard-jack some
time ago and got it to produce some boot text on the screen.
> See for example: http://so-much-stuff.com/pdp8/decmateI/decmateI.php
> . . found my notes about it from 2011:
> DEC DECMate VT278-AC
> • LSI PDP-8 in VT100 case.
> • 6120 microprocessor (D1-6120-9 8)
> • 6 * SIP memory modules w 4 chips each (21-17559-AA / 8252 DP)
> • 2 * 6402 (UART)
> • 2 * 6121 (PIO)
> • SND 5027 D (video controller)
> Pros & Cons:
> • CON: Missing disk drive.
> • CON: Missing keyboard.
> 2011 Jul: Powered up. PWR-OK and CPU-OK LEDs lit, CRT filament lit. No
raster. Schematic obtained from bitsavers. No video or sync signals from
processor board to monitor board. CG CHAR CLK to CRT Controller chip is
present (1.5MHz), but no sync signals out from CRT Controller. ROM, CPU, CRTC
socketed chips rocked for contact, no change. CRT Controller may not be
getting initialised in initial ROM boot process.
> Connecting ring (data) to tip (+12V) on keyboard connector after
power-up brings up SET-UP message and flashing cursor after several seconds.
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