A couple of weeks ago I shared some thoughts about an automated tester for Yellowstone boards, including how to test for short circuits. One of the questions that grew out of the resulting discussion was whether short circuits could only…
Firmware version 0.3.7 is now available for the Wombat ADB-to-USB input converter. This version fixes a compatibility problem with some ADB mice that use non-standard communication timing. You can download the new firmware from the Wombat page. This was an…
After several days of extensive testing with the latest Yellowstone prototype, and several years of development work on this universal Apple II disk controller concept, I’m here to say that Yellowstone v2.2 is looking good. Looking very good. It’s the…
Hello! I’m Alice, the engineering intern here at Big Mess o’ Wires. I’m a math with computer science major at UC San Diego, and throughout the summer I’ve been working on some fixes and improvements for BMOW products. I started…
Hello! If you haven’t met me already, I’m Alice, the BMOW engineering intern. (You might hear more about what I’ve been up to soon.) I’m excited to share that after several stages of redesign, cases for the Daisy Chainer are…
Yellowstone version 2.2 is up and running! If you don’t remember what’s changed in v2.2, well… that makes two of us. Luckily we can both go read this August 20 post for a reminder. Hand assembly took about two hours,…
I’m still working on the design for an automated Yellowstone tester. The general idea is to use an STM32 microcontroller that’s connected to all the Yellowstone board’s I/O signals, then drive the inputs in various combinations and verify the outputs.…
Here’s a brief follow-up about the classic Macintosh game Dark Castle, which I mentioned a few weeks ago in connection with some possible disk emulation bugs. This game originally shipped on two 400K floppy disks. At the intro screen shown…
The Yellowstone Smartport problems that I discussed last week should all be resolved now. Small fixes to big problems. As usual the main challenge was determining exactly what the problem was and how to reproduce it. After that, the fix…
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