This is the third part of a series of posts detailing steps required to get a simple Z80 based computer running, facilitated by a Teensy microcontroller. It’s a bit of fun, fuzing old and new hobbyist technologies. See Part 1 and Part 2, if you’ve missed them. Now we have the base Z80 working, interrupts and a display connected which can be manipulated in a console/terminal fashion using the Z80 I/O ports. The next step? File storage! The obvious choice for file storage here is an SD card...
