In the world of Apple II disks, there are two major types of disk controller cards: the original Disk II controller (and clones), and everything else. Both have their place. The “everything else” category includes the Apple 3.5 disk controller…
The Wombat ADB-USB input converter is now back in stock at the BMOW Store. Thanks for everybody’s patience during the manufacturing delay. The Wombat is a bidirectional ADB-to-USB and USB-to-ADB converter for keyboards and mice. Connect modern USB keyboards and…
Here we go! Beta testing kicks off today for the Yellowstone universal disk controller for Apple II. Yellowstone is a replacement for the Liron disk controller, the Apple 3.5 disk controller, and the standard Disk II controller, all rolled into…
Good news! Kay Koba at Kero’s Mac Mods store is now selling pre-packaged ROM-inator kits for the Macintosh Plus, Mac 512Ke, 512K, and 128K. This is a recreation of the original Mac ROM-inator kit that I designed in 2015. The…
In my attempts to resolve some logic level problems with the Yellowstone Tester, I decided to take a crude approach, and reduce the 5V supply to about 4.7V using a simple zener diode voltage regulator. From my previous tests with…
The Yellowstone tester is suffering from the logic level blues. I made a blundering error in its design, which I only discovered now. Like most of my projects, the tester uses a mix of voltages, with the MCP23S17 port expanders…
I once said I’d spend a maximum of one day on development of an automated tester for the Yellowstone disk controller. Haha, that was so cute. Today marks two months since I began work on the tester. Today was also…
Yesterday I wrote about some BMOW blog troubles displaying special characters and international characters, which was apparently triggered by a recent update to MySQL 8 at my web host. Old pages containing special characters like curly quotes, accented letters, or…
A few months back I wrote about some web site troubles with the HTML entity, non-breaking spaces, and UTF-8 encoding. A similar problem has reared its head again, but in a surprising new form that seems to have infected…
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