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.

Garbage In, Garbage Out

I’m beginning to suspect there’s something subtly wrong with my Apple IIe, which might explain a lot of strange intermittent errors I’ve recently observed with Yellowstone and Floppy Emu development. It’s hard to know what to conclude, but when you…

Floppy Emu prototype with an OLED display

Floppy Emu OLED Prototype

Displays, displays! I’ve built a prototype Floppy Emu board that uses a 1.3-inch 128×64 OLED display, instead of the existing 1.4-inch 84×48 LCD. It works, and it looks very nice. So is this the answer to my display worries? Take…

OLED and LCD displays compared on Floppy Emu

Floppy Emu Display Experiments

Last week I wrote about my troubles with the Nokia 5110 LCD used by Floppy Emu, with a discussion of possible replacements. There was no clearly obvious alternative, as most of the options were too big, too small, too expensive,…

Nokia 5110 LCD on a radiation meter

Quest for a Decent LCD

Floppy Emu uses an 84×48 graphical LCD display. It’s just a low-resolution 1-bit display, but it’s fast and easy to use, and has a nice built-in backlight. The display is actually a clone of the old Nokia 5110 phone display,…

Logic analyzer connected to Yellowstone's JTAG pins

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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