littleatari810 | A Little Atari 810 Disk Drive

littleatari810 is a C++ library typically used in Internet of Things (IoT), Raspberry Pi, Arduino applications. littleatari810 has no bugs, it has no vulnerabilities and it has low support. You can download it from GitHub.

#a little atari 810 disk drive. my first computer was an atari 400. my first disk drive was the magnificent atari 810. overwhelmed by a recent wave of nostalgia from playing zork for the first time in 30 years i have built a working model of an atari 810 that uses 8gig microsd cards instead of 5 1/4 inch floppies to emulate up to 8 drives. maintaining the relative dimensions of drive to media, the model is somewhat smaller than the original. the original 810 managed 90k per disk and had a volume of about 30,000 cm3. assuming a 8gig card the new version can store about 90,000 disks and at 5 cm3 only takes up 0.000167 times as much space. so it is a lot bigger and a lot smaller. progress eh?. ###how it works the atari 810 (and subsequent 1050) drives are “smart” serial peripherals. the atari os communicates drives, printers, modems and devices using the sio (“serial input/output”) protocol. sio devices connected to the atari with a chunky 13 pin connector. ###sio the atari addresses 5 bytes commands to peripherals by lowering pin 7 (command) and transmitting 19200 baud asynch serial on pin 5 (data out). if the peripheral recognises the command (‘1′,’r’,1,0 for a read from disk 1, for example) it acknowleges the command and responds with data on pin 3 (data in) at a pokey 19200 baud by