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 exercise the holdoff logic, and it all seems solid.
- Implemented writing to the emulated HD20 disk
HD20 Firmware 0.4A-F66
This marks the completion of the HD20 emulation work, and the latest firmware version is fully usable as a general purpose boot disk or secondary disk. I still need to do some code cleanup and performance optimization, and see how much of the floppy and HD20 emulation code can be merged, but that’s all bonus stuff. Assuming no major problems surface with this HD20 firmware 0.4 in the next couple of days, I’ll promote it to 1.0 status and call it done. Woohoo!
Thank you, Apple, for creating such an oddball hard drive that hijacked the floppy port. HD20 lives!