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 that a few people with older boards encountered when running this firmware.
Another note: the firmware requires that the HD20.dsk file on your SD card occupy a contiguous range of sectors. If it doesn’t, you’ll see an “image not contiguous” error on the LCD. The easiest way to ensure all your SD card files are contiguous is to copy them all to your PC, delete everything on the SD card, then copy the files from your PC back to the SD card. You can also use a defragmentation tool on the SD card if you want to get fancy.
- Fixed NEG COMMAND SIZE error that sometimes appeared on faster Macs
- Fixed BAD FUSES error that appeared on older Floppy Emu boards
HD20 Firmware 0.3A-F65