Hey, all.
I was browsing various craigslist places around the US and found someone selling off a substantial collection of classic micros outside Minneapolis
His ad is here:
https://minneapolis.craigslist.org/csw/sys/d/silver-lake-vintage-computer-c…
Through our email chats I've determined that he has these components of an old Heathkit system of unknown workingness:
H8
H17-3 floppy drive
H17-2 drive chassis
Zenith data systems ZVM-131 monitor
Also, he has a terminal made by Data-100, for which I can't find much info but I suspect will be a 3270-compatible terminal of some sort.
He also has a variety of micros, particularly some Atari 8-bit, Apple II , CoCos, and other things. The photos in the ad only show a fraction of what he has. He's not terribly knowledgeable - he came into this stuff as part of an estate cleanout and had 4 pickup truck loads of this stuff, so who knows what has been lost.
I let him know that I would be posting here, so feel free to reach out to him directly.
Anyway, I figured I'd post this here given that someone in the Minneapolis area might be interested in checking some of this stuff out, in a covid-compliant manner, of course...
-mike
Hi
Thanks for the replies with the Suns, hopefully I will be able to get one up and running :)
As I should probably clear a bit of space in the ?office? - I have several bits of kit available. I?m in the UK.
HP Visualise 86000 - complete system with keyboard/mouse - nice condition
Several QBUS 11/53 machines with HD (5M I think), two pedestal, the rest ?rack mount? units.
DEC alpha - not sure on model number but functional
VAX 3000 - boots but needs restoration case is in poor condition.
PM me if any of the above is of interest. I could probably ship some of the items.
Thanks
Ian
Hi all,
I now have just acquired a VT-100 and am in the process of checking it out.
I noticed there is a capacitor that has vaporized, but I cant determine
what value it is.
I have the DEC VT-100 maintenance guide but it is very blurry in the
relevant area.
I cant even read the board designation.
This is the area of the circuit, I can trace the 2 Zener diodes on the -23V
rail, to one end of the cap, the other end seems to go to ground. The
obvious culprit is C6, but that doesn't match the mud map of the board, as
in C1x.
https://imgur.com/a/tm8mn8b
This is the capacitor in question.
It looks like C1x where x is undetermined.
I think it was a ceramic monolithic capacitor, it seems to be different to
any other caps on the board, i.e. slightly larger and a different colour
blue. When I look at this hires photos on Google images, it is the blue
capacitor circled below
Does anyone have a VT-100 and mind checking what the value of this
capacitor is please?
Ideally value and voltage or even just the nomenclature written on it, I
can work out the value and voltage from that.
Many thanks and Cheers, Martin...
Hi Kevin/Stefan/Salik
Thanks for the replies much appreciated.
Looks like there might be a few of these systems around, so will see if I can pick one up.
Willing to pay a reasonable fee for a system of course.
Thanks
Ian
Hi,
during my move, I think I lost my tape drive, which was attached to my
at&t unix pc (68000 based).
Anybody knows of the top of their head, if I could read the tapes on any
other machine? Was it anything "standard", or did they do their own at at&t?
Cheers & thanks!
Hi all,
I've had a paper tape reader for a while but never had a punch to make new
tapes, and the ones i've found are not only very large but also very
expensive. So I'm toying with the idea of making an open-source punch, but
I can't find any detailed diagrams of how the mechanism works.
I'm assuming (without any data to back it up) that there is a cam, an array
of spring-levered pins, and horizontal spacers controlled by solenoids that
bridge the gap between the cam and each punch pin when called for.
Does anyone have insight into how reliable/fast paper tape punches work?
--
Anders Nelson
+1 (517) 775-6129
www.erogear.com
Courtesy of a Raspberry Pi serving as the ND server, I am now able to
load SunOS 3.5 over the network onto my 3/260 and it is now coming up
into the OS. I am now seeing this error:
>sc0 at vme24d16 200000 vec 0x40
>sd0 at sc0 slave 0
>si0: sc_cmd: scsi bus continuously busy
>sc0: resetting scsi bus
>sd1 at sc0 slave 1
>si0: sc_cmd: scsi bus continuously busy
>sc0: resetting scsi bus
The SCSI controller is the "Sun 2" SCSI card. I saw some corrosion-ish
crap on the board and cleaned it off. It is SCSI, so, of course, I
played with termination. No change in behavior.
Is this likely to be a controller board problem or a device problem?
Are these boards picky about SCSI devices?
Any other suggestions?
alan
