PDDuino
Jimmy Petit's original project for Arduin Mega https://github.com/TangentDelta/SD2TPDD
A fork that adds,
- power saving sleep mode calls
- disk-activity led
- support for the special card-reader hardware on Teensy 3.5/3.6
- and the current working directory is displayed in the top-right corner of the TS-DOS display.
https://github.com/aljex/SD2TPDD/tree/bkw_teensy36 for Teensy 3.5/3.6
https://github.com/aljex/SD2TPDD/tree/bkw_al32u4 for Adafruit Feather 32u4 Adalogger