Floppy Emu Back in Stock
BMOW’s Floppy Emu disk emulator for vintage Apple computers is back in stock. Get yours now at the BMOW store.
Year 2018
Yellowstone: Cloning the Apple II Liron
FPGA-based disk control for Apple II is finally working! Six months ago, I began designing a universal disk controller card for the Apple II family. Apple made a bewildering number of different disk controller cards in the 1970s and 80s,…
No Device Connected
Finally, the first real progress on the Yellowstone disk controller since last summer! Sometimes an error is a good thing. It doesn’t look like much yet, but this error demonstrates that the Yellowstone card is correctly decoding address references to…
Quest For a Simple JTAG SVF Player
Where are all the cheap and simple third-party JTAG programmers? My work on the Yellowstone disk controller was sidetracked by issues with the Lattice-clone JTAG programmer, and discussion about ways that future Yellowstone customers might do JTAG programming. Eventually I…
What’s on the BMOW Bookshelf
Over the decades, I’ve pared my collection of books down to just four shelves – only about 100 volumes from a lifetime of reading and studying. Because who needs physical books in an age where everything is available online? The…
Yellowstone JTAG Debugging
After a month of inactivity, I finally returned to my unfinished Yellowstone disk controller project to investigate the JTAG programming problems. Yellowstone is an FPGA-based disk controller card for the Apple II family, that aims to emulate a Liron disk…
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