The Arduino Mega shield

A project log for MRC6502 - Modular Retro Computer

MRC6502 is a fantastic opportunity to learn more about digital electronics and 6502 assembly programming... step by step.

padnestpadnest 02/14/2022 at 10:170 Comments

I designed this shield to easily connect the Arduino Mega to the MRC6502 system.

 It has pass through headers for bus signals, control buttons and a socket for an additional usb serial module.


Arduino can access to the system bus in order to control the CPU execution, read and write memory and devices registers, generate slow system clock or enable fast board clock generator.

Arduino used ports are:

Schematics: here

See you next step.