Clock Glitch
I’ve found a rare clock glitch in the Yellowstone hardware, but I’m not sure how to fix it. This seems to be the source of the “mysterious signal glitching” I mentioned in my previous post, that disappeared after some minor…
Yellowstone Testing With Real Drives
I’m still testing the latest prototype of Yellowstone, my FPGA-based universal disk controller for Apple II computers. After a great deal of poking and prodding, the disk controller is now mostly working with all of the Floppy Emu’s disk emulation…
When A Space Is Not A Space
I just spent more than two hours troubleshooting a seemingly simple HTML problem. When I copied and pasted a small section of HTML, the web browser displayed the newly-pasted section differently from the original. The horizontal spacing between some of…
Testing Yellowstone 2.0
I’ve finished assembling the first prototype board of Yellowstone 2.0, my FPGA-based universal disk controller for Apple II computers. I used a syringe to dispense solder paste onto the pads, and baked the board on a hot plate with the…
New Product Release: Dual 5.25 Adapter for Disk II, and Apple IIc Drive Switcher 2.0
Today Big Mess o’ Wires is releasing two new products for use with the BMOW Floppy Emu disk emulator for Apple computers. Remember the dual 5.25 inch floppy emulation mode that was announced back in February? It gave the Floppy…
Apple II Binary Files and FPGA Reprogramming
I’m seeking help from all the Apple II programming gurus, with what may be an obvious question. During the development of the Yellowstone FPGA-based disk controller, I’ve written several times about my goal of providing a way for users to…
ADB-USB Wombat Restock, and Global Shipping
The Wombat ADB-USB input converter is now back in stock at the BMOW Store. Thanks for everybody’s patience while we waited out multiple delays on delivery from my manufacturing partner. There’s now plenty of Wombat stock at BMOW HQ, so…
Canada Shipping is Back Online!
Good news: the International Shipping Fiasco of May 2021 appears to be resolved, although the underlying causes are still unclear. Early indications are it was some kind of USPS screw-up with electronic collection of customs data at the San Francisco…
Yellowstone 2.0 PCB
The Yellowstone version 2.0 PCBs are here! They sure look shiny. I wonder if they work. This is the second generation of my FPGA-based disk controller design for the Apple II. In comparison to the version 1.0 PCB, you can…
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