Category Floppy Emu

A floppy disk drive emulator for Macintosh computers, using an SD memory card and custom hardware to replace a 3.5″ disk drive and floppy disk.

Apple IIc floppy port

Apple SmartPort Pin Directions

How can you deal with signals that might be inputs or might be outputs, in a way that’s safe and won’t damage sensitive electronics? In my last post I described three different types of Apple II family floppy drives. Since…

Apple II logo

Apple II Disk Emulation

I’ve begun looking into the possibility of Apple II disk emulation with the existing Floppy Emu hardware. The recent research project into Lisa floppy emulation turned out well, so why not do it again with another vintage Apple computer? A…

Lisa 400K floppy drive

Lisa Native Floppy Emulation

Lisa floppy drive emulation with Floppy Emu is a success! Begone, evil rotational disk drives, with your failure-prone gummed-up mechanisms. The age of SD card Lisa floppy emulation is here! After a lot of tinkering, it’s now working on both…

Homemade serial adapter for the Lisa

Lisa Floppy Emu, Looking Good

Watch this video on YouTube I’ve been crawling slowly closer to a working floppy emulator for the Apple Lisa, using my existing Floppy Emu hardware. I’ve now got something that’s broadly usable for emulation of Macintosh disks on the Lisa…

Comparing two compiled Floppy Emu binaries

Floppy Emu AVRGCC Mystery Behavior

For a while I’ve been struggling with occasional mystery bugs when making changes to the Floppy Emu AVR microcontroller firmware. I’ll make some seemingly innocuous code changes, and completely unrelated things will break. Frequently I’ll change something in a menu…

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