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Just a slight revision, doesn't warrant a major version bump. Biggest change is increasing the hole diameter for the option jumper headers. They're no longer press-fit, but a free fit like the 40-pin header. PCBcart apparently can't hold tolerances on the holes like they used to, and the last...

This is the Pegasus Data Systems Pegasus II: It's a big old S-100 turnkey box. I picked this one up from Doug Crawford in December 2019, fixed it in June 2020, and just now got around to writing it up: http://users.glitchwrks.com/~glitch/2023/02/25/pegasus-ii-repair I'd actually worked on...

Finally wrote up when RetroHacker_ and I got together, set up his PDP-11/23+, and cleaned a pile of packs and several RL drives: http://users.glitchwrks.com/~glitch/2023/02/23/pack-cleaning ...took nearly 10 years to get around to writing it up :P

If you live in the Hudson Valley and haven't been to P&T Surplus, now is probably the time to go: https://www.dailyfreeman.com/2023/02/19/pt-surplus-in-kingston-struggles-as-owners-battle-illnesses-mounting-bills/ In addition to the huge variety of industrial surplus stuff, there's almost...

Finally wrapped this one up and did a writeup on it: http://users.glitchwrks.com/~glitch/2023/01/30/sun-511 Here's what it looks like, closed up: And open: I got this shoebox for shipping, basically empty. It contained only the PSU, fans, and mounting hardware. The plastic front bezel's...

ITI Audio/Sontec is known for world-class analog mastering equipment, but in the 80s they designed and prototyped a FORTH computer based on the Rockwell R6500 series CPUs: http://www.glitchwrks.com/2022/09/28/sontec-forth-computer Here's a picture of the last assembled stage of prototyping...

Finally did a writeup on my Sun 3/50: http://www.glitchwrks.com/2022/09/19/sun-3-50 Here's the machine set up and running: Before powering it up, I opened the machine and cleaned it. I was surprised to find this: It's a Parity Systems RAM upgrade! It's actually two boards with a jumper...

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...

Finally got some time to clean up the source for our RAM test/diagnostic ROM for the AIM-65: https://github.com/glitchwrks/aim65_memtest/ Initial work was largely done by TangentDelta. This was written to help diagnose and repair some dead AIM-65s. The test will run on a minimally functional...

eBay listing link: https://www.ebay.com/itm/275373808709 Deskthority thread link: https://deskthority.net/viewtopic.php?t=24031 I bought this keyboard a number of years ago with the intention of using it with my Polymorphic Poly-88; however, I found a George Risk keyboard sometime after that...

link: https://www.ebay.com/itm/275373685432 Already imaged and sent off to The *HUMONGOUS* CP/M Software Archives, though we don't believe these contain anything missing from the current online archives. Figured maybe someone wants these since they're originals and not just user copies, like...

Full writeup here: http://www.glitchwrks.com/2022/06/29/kaypro2-repair I bought this Kaypro II as a local pick-up deal in either late spring or summer 2010. It came with a ton of documentation, original diskettes, a Kaypro-branded Diablo printer, and even the faux leather carry cover...

link: https://www.ebay.com/itm/275368323499 Looks complete, outer sleeve a little beat up. Auction-style listing, starting at $1!

writeup here: http://www.glitchwrks.com/2022/06/25/imsai-sio2 Turns out it's fairly easy to disable the command register on the IMSAI SIO2 and allow the SIO2 to coexist with the MITS disk controller (or FDC+). I was able to do it without any cuts or jumps on the actual circuit board, so there...

Full writeup here: http://www.glitchwrks.com/2022/06/22/6507-sbc BillO on the 6502 forums traded me a blank board for his then-current OMS-02 6507 SBC back in 2011. He was interested in building one of my 8085 SBCs and I just happened to have a spare board for the 8085 SBC rev 2 on hand, at...

I think it's finally ready to be poked at: https://github.com/glitchwrks/gwmon-65 This is a monitor that follows the same command syntax and input/output formatting as GWMON-80, our small monitor for 8080 and compatible systems. It's not really a straight-across port as parts were rewritten to...

link: https://www.ebay.com/itm/275345476899 The outer box is a little rough, but everything inside looks good. Starting bid of $1. Will ship via USPS Media Mail, I'll stick MAGNETIC MEDIA -- DO NOT X-RAY stickers on the box. Forums are making me select shipping, so I'm selecting "In Country...

Finally getting around to messing with this one: It's a CGRS MPU, a vintage 6502 CPU board for the S-100 bus! This is an older revision than I can find documentation for -- everything online is for the rev 4 board, it appears I have rev 2. This one doesn't match the schematics, doesn't...

I've been working on writing up my process of getting CP/M bootstrapped for the SD Systems VersaFloppy II using Bruce Jones' code that Herb Johnson has on his site. I've had it working for a good while (geneb has a system I set up with it) but I've just not had the time to get it all together...