In turn, since he needed an easy way to program the flash memory which holds the software to run on the Z80, he used an Arduino Mega as a debugger, making the SBC an Arduino shield itself.

[TheMagicSmoke] has produced just what we’d have needed then for one component that’s ubiquitous, the I 2 C EEPROM ... straightforward add-on for an Arduino Mega, so we’re shown the wiring ...