With a program called SDRIVE, I can select a disk image on the SD card, and then load it:
I never did get the adapter working perfectly – I can load certain disk images, such as ballblazer, but not others, like Karateka. I think it would take a lot more investigation, and perhaps digging into code, to figure out how to fix this issue.
Until I get a suitable TV, this is likely as far as I’m taking this particular project.
My “RetroPie” days of emulating old games on the Raspberry Pi are over – from now on, I can play the real thing.
I was given a friend’s old family computer, an Atari 800XL in 2011. They still had all the parts, except the custom molded cable that connects the floppy drive to the unit.
Receiving an Atari 800XL in 2011
5 years to the month, I finally got around to ordering a cable from a company in California that still has pretty much everything Atari ever made in stock: http://www.best-electronics-ca.com/
I picked up a Donkey Kong cartridge (pictured) along with my cable order (the available, never released Bruce Lee prototype cartridges exceeded my budget).
As I don’t have a TV, I connected it to a PC with a Hauppage TV card. As I don’t have the correct cables, I only get a black and white picture (I don’t have a composite cable, and the brightness and colour signals are split). Also, Donkey Kong is unplayable with this setup, as the TV card adds a significant lag (eg: Mario jumps half a second after you jump).
In another post, I’ll write up how I hacked up one of the floppy cables and built an Atari floppy emulator with an Arduino, so that I can download Atari software from the Internet and load it off an SD card: