HD20 Firmware 0.4: Write Support!
Firmware 0.4 adds support for writing to the emulated HD20 disk drive. No more read-only disks! I’ve tested it with a Mac Plus and a Mac IIsi, copying lots of files about and moving the mouse in crazy circles to…
Year 2014
HD20 Firmware 0.3: Fixes for 020 and 030 Macs
I’ve fixed an HD20 emulation bug that caused occasional errors on faster 68020- and 68030-based Macs. The symptom was a “NEG COMMAND SIZE” error message on the LCD screen, and I/O failure. This version also fixes the “BAD FUSES” error…
68 Katy Schematics and Parts List
A number of people asked for a parts list and schematic for 68 Katy, so they could build their own version. Here it is! Please let me know if you find any errors. Parts List Motorola 68008 CPU, 8…
Floppy Emu, $10 Off This Week
Both models of Floppy Emu boards are on sale this week, $10 off until December 5. If you’ve been holding off on getting one, now’s your chance! With the new HD20 firmware hopefully finished soon, the Floppy Emu board will…
HD20 Firmware 0.2: Fewer Bugs, More Emus
I’ve fixed most of the outstanding bugs in the HD20 emulation firmware. If you’ve been holding out for a way to attach huge SD card storage to your vintage Mac, this new firmware version is actually worth using. It’s still…
HD20 Firmware 0.1
Good news, HD20-ers! I have rudimentary HD20 emulation working now, and I was able to use it to boot my Mac Plus. This runs on the standard Floppy Emu hardware, which means the same hardware can function as a floppy…
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