I finally herded together the extant pictures of the KIM-1s I've had in the past and did a writeup:
http://www.glitchwrks.com/2022/09/18/kim1-boards-past
TL;DR is that during college I found a KIM-1 in an employer's warehouse. Later, I found a box with five more! These were all Virginia Tech surplus, and one of them is likely the first KIM-1 used for classroom instruction there. I'd intended to sell some of them, since who needs six, right? Unfortunately, I was forced to sell all of them, including the one I'd intended to keep for myself, due to economic/financial situations after graduation.
I've never seen anyone post about these particular machines, and I haven't seen them exhibited at VCF East, VCF Midwest, or HOPE. None of the sellers contacted me about them after the sale concluded. Is anyone here the owner of one of these particular KIM-1s? Do you know the owner? Did you use KIM-1s while at Virginia Tech? Please let me know!
Thanks,
Jonathan
Trying to identify two cables I ended up with, one to DE-9 and one to Mac 8-pin
mini-DIN. The other end on both is a male 9-pin mini-DIN. These clearly look
like serial cables, but to what? A cursory Google didn't come up with anything
obvious. They don't fit the Mac GeoPort or Sun SPARC serial ports because the
pins are slightly out of place.
--
------------------------------------ personal: http://www.cameronkaiser.com/ --
Cameron Kaiser * Floodgap Systems * www.floodgap.com * ckaiser(a)floodgap.com
-- Don't let 'em drive you crazy when it's within walking distance. -----------
On 9/16/22 6:37 PM, Cameron Kaiser <spectre(a)floodgap.com> wrote:
> These clearly look like serial cables, but to what?
The Epson PX-16 used a 9-pin mini-DIN for the serial port:
https://electrickery.nl/comp/px16/px16org.html.
Fred Jan
All,
I have a TVI-921C at the museum. I power it on and it beeps
continuously. One long, solid tone that does not stop until I power it
off. How do I start diagnosing this?
--
-Jon
+44 7792 149029
I've discovered that three of my four RA8x drives (one 82 and two 81s) now
refuse to spin up. All the failing drives give "SPIN ERROR" as the reason
and I've discovered, by an combination of educated guessing and parts
swapping with the working drive, that all three have bad optical sensors for
the tachometer disk.
Surfing around I see that this is a known problem. Apparently the
compound that was originally used to pot these sensors turns opaque over
time and, being as they're optical sensors, that really reduces their
effectiveness. I've seen some reports of people trying to repair the
sensors by either sanding off a layer of the epoxy potting compound, or even
trying to dissolve it somehow, but that seems to be a little bit hit or
miss.
Doesn't seem like these should be hard to replace though. They're just an
infrared LED and a phototransistor in a cute plastic case, and that
technology is still pretty common today.
Has anybody found a replacement for them? Does anybody have any
suggestions?
Thanks,
Bob
I just acquired the several Bubbl-Tec bubble memory boards for QBus, and was wondering if anyone had manuals or more information than the couple of web pages I've found with high-level descriptions:
MBC-11A bubble memory controller
MBB-11A bubble memory board for use with MBC-11A
QBI-11C bubble memory board
QSB-11A bubble memory board with RX01/02 emulation
It looks like I can just drop the QSB-11A into a system and it should work as if it's an RX01 attached to a controller, but the other boards appear to need cabling and possibly jumpers to configure them for use, and maybe custom drivers/code too.
-- Chris
Found some documentation relating to Sturthers-Dunn Director 4001 PLC
and a SixNet technical config guide, all from the 1980's.
Anyone want it for shipping or pickup in MD?
C
The seller has this listed as a Gigabyte GA-6BXU Rev 1.5 mainboard.
https://www.ebay.com/itm/195259246091
According to Gigabyte's website the GA-6BXU has only one CPU slot. This one
as you can see has two.
The only dual Pentium II slot main board I could find manufactured by
Gigabyte is the GA-6BXDS shown here:
https://www.gigabyte.com/Motherboard/GA-6BXDS#ov
Notice the number of electrolytic capacitors beside one of the CPU slots is
different from that shown in the main board for sale.
The seller has not responded to my inquiries which may be a tip off in
itself.
Thanks
Don Resor
