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Hi all, Somewhere around 2010 there was a group buy of IOB6120 PCBs and parts. I got all my parts from the gentleman who arranged the buy and built up the board without really critically reviewing the parts, and when I attached it to my (working) sbc6120, the whole system was unresponsive. I...

Hello All, It's time to start planning for the next DFW Retrocomputing meetup. The first Retrocomputing Meetup of 2024 will be on January 21, brought to you by the DFW Retrocomputing Meetup group and the Vintage Computing Collective of North Texas. Our winter meetup is generously sponsored by...

Hello, A while back I picked up a DEC backplane on ebay. The description was not detailed, and the photos were not great, but it looked like a DEC PDP-8 or PDP-11 backplane, and I have cards for both, just waiting for a backplane. I do not recognize this backplane, and searching for the...

I've asked this question on applefritter, and got one response that the keycaps might not fit Cherry MX keys, but this did not seem definitive. Does anyone either know the answer, or does anyone happen to have one of these keyboards (or keycaps), that might be willing to test the keycap fit on...

I'm ordering some Kim-1 replica PCBs (by Eduardo Casino). All the KIM-1 versions I've seen have gold fingers and HASL finish elsewhere. Unfortunately, JLCPCB cannot produce a HASL-finished PCB with gold-plated fingers. Has anyone seen a version of the kim-1 with HASL over the fingers? If not...

While browsing tables at the excellent VCF Southwest event this past weekend, I saw an AIM 65 for sale at a decent price and couldn't resist, mostly because it was in a nifty metal case. Turns out, the case housed an interface card and a 4-slot backplane which, at first glance, I suspect are...

I recently picked up an ICS Model 4811 IEEE bus analyzer. I figured it would not be too hard to find a manual, but no luck so far. Does anyone here happen to have a manual for this machine? I did reach out to ICS, and they have a copy, and even offered to scan a section if I know what I need...

Hi All, My replica keyboard (see this thread) has an uppercase/lowercase keymap. It works, but has not yet been optimized. The shortcomings are: The N^ key and P@ key are now nN and pP, so the ^ and @ characters need a new home Currently the POWER key/light is being used as a capslock...

For an upcoming retrocomputing meetup, I thought I might install 16-bit Coherent on a 286 for show-and-tell. Leaving aside for the moment the logistics of obtaining a copy of 16-bit Coherent, I figured I'd snag a cheap 286 on Ebay. I figured there should be some kind of working machine for...

I have a number of floppy drives, both 5.25" and 8", that need alignment, repair, or both. A few years ago, there was a gentleman on this forum that offered such service. However, I see that he has not been active on the forum for a while. I would be glad for any pointers.

Does anyone know how to make the forum search feature a little more selective? If I try to search for kim video I end up getting a list of posts that have either "kim" or "video". Same if I try kim AND video or "kim video" There's no difference if I search from the advanced search page or...

Not my item, but posted on OSIweb.org, and I am posting the link here as a favor for the seller. Challenger 4P-MF Ive seen the photos and it looks like a nice system in great cosmetic condition. You'll have to log in to the OSIweb.org forum and PM the poster if you're interested. Dave

I'm wondering if there are any good books describing the early days of DEC, along the lines of Hackers, Dealers of Lightning, Where the Wizards Stay up Late, etc. I read DEC is Dead, Long Live DEC some time ago, and it's interesting if dry, but not quite along the same lines.

I was looking for an old post on comp.lang.forth, and was surprised to discover that the group doesn't appear to be hosted on google groups any more. Searching the group pulls up a "banned group" message, and selecting the "continue to the group" button shows 0 messages in the group. This...

Hello all. While scrolling through the RCR podcast to find a link to an article from a couple of years back, it occurred to me that there is no list of great retrocomputing blogs and websites. I'm interested to know what are everybody's must-read blogs? Also interested in links to websites...

I'm looking into the possibility of building up some ASCII keyboards for those who prefer not to build their own. The options for keys are Futaba MD-series keys and the various Cherry MX options. For those of you who have tried out different Cherry MX keys, I'm interested to hear your key...

My recent project may be of interest to Apple II owners, and I'd like to share it. I've been working on an ASCII keyboard that can be used in general for the Apple II, as well as other retrocomputers. Here's a photo of the keyboard configured for Apple II. The keyboard has connectors for...

Would there be any interest in a SOL-20 keyboard replacement? I recently picked up a non-working SOL-20 which is complete except for the keyboard, and the chances of picking up a keyboard at a reasonable price are pretty slim. I already have an ASCII encoder PCB, so making a new keyboard is...

What is the best general purpose 1970's style ASCII keyboard layout? For example, using the starting point of an ADM-3A, which is an ASR-33 derivative like many keyboards of the time: The HERE IS key is more of a terminal function than a keyboard function, so I think I would use the space...

Does anyone have accurate measurements of the mounting hole pattern for the Apple II/II+ keyboard? I am finalizing a keyboard design and want to make sure it fits properly in an Apple II. Many thanks, Dave