Recent content by JNZ

It does look from that picture you're missing the second bar. I took a video: https://files.catbox.moe/q6arf0.mp4

Here's a zip of the two STL files, the door latch mechanism and the head loader. I didn't do anything with the eject mechanism, but I took some pictures

Does anyone want to speculate on the configuration of the famous IMSAI 8080 in the movie WarGames? Is it even a realistic depiction of the computer? I'm most curious as to what the terminal interface was and if that's feasible. I was mostly under the impression that S-100 systems used a separate...

I have three Siemens FDD 100-8D drives that appear to read data only intermittently, and I suspect they need calibration. I have the technical manual for them, but unlike other drives it doesn't mention how to perform maintenance on them. From a manual for a Siemens 5 1/4" drive I read some of...

I have two Siemens FDD 100-8 floppy drives on my S-100 system, along with a spare, and I'm using a Jade Double D disk controller board. I've done what repairs I can (designed and 3D printed some components for the drive latch mechanism, replaced the felt head load pad, checked the PLL with my...

I'm looking to see if anyone has an N8VEM Z80 or similar (I heard one even runs x86 and DOS) they'd like to sell. I have a Mark IV SBC (but no ECB backplane) that has a hardware failure of some kind, and I don't want to dedicate time to diagnosing hardware errors. I'd rather do software and play...

I have a 386-33 in of a motherboard with no SIMMs currently. It can support up to 32 MB in 8 slots. Does anyone have some extra memory you're willing to part with? 16-32 MB would be an idea configuration for a 386, I'd think, but the more the better.

I have a 5150 that came with an IBM MFM hard drive but no controller. Does anyone have a compatible one?

I'm looking for an XT keyboard for my 5150, such as the 83-key keyboard that came with it. If you have a compatible (but less original) XT keyboard or an adapter for an AT keyboard, I'd like to consider it too Shipping would be to Utah Thanks

I recently received an IBM PC XT, a 5150. I have an IBM Model M keyboard, P/N 1394054, the space-saving one. Weirdly it worked fine with an AT adapter--I was able to type in BASIC. Hopefully coincidentally it doesn't work now, after I tried to use a PC XT-CF ISA card and inserted it the wrong...

I very fortunately came into possession of an IBM PC-XT (correction, a 5150) with a Hercules graphics card, a Microsoft Mach 10 8086 board, an HDD controller card, and a 20 MB MFM HDD (or maybe 10 MB). The machine is missing the original 360 KB FDD, though, and I'll need a way to transfer...

A coworker in an office in Seattle, in the Fremont area, needs to immediately find someone to adopt a ton of old computers. They're mostly Apple computers, materials, and later PCs, but there's at least one early IBM PC. If they're not taken they'll be thrown out. Pics here...

A coworker in an office in Seattle, in the Fremont area, needs to immediately find someone to adopt a ton of old computers, including a number of Apple computers and--of note for this genre--some 486+ PCs. There's also at least one IBM PC in there. If they're not taken they'll be thrown out...

A coworker in an office in Seattle, in the Fremont area, needs to immediately find someone to adopt a ton of old computers, including a number of Apple computers. If they're not taken they'll be thrown out. It looks like 30-40 computers and some manuals and accessories...

This is a beginner question, but is it possible to run BASIC programs outside of the first 0xFFFF bytes of memory available to the default Apple II? I have a IIGS which has at least 256 KB (and actually has a memory expansion board I haven't investigated yet), but my 30 KB game is taking up too...