Recently I was cornered into upgrading my laser engraver after the MPC03 card failed.
Attached is some of the work that went into the Upgrade. Amos
Any constructive and helpful comments are welcomed.

Part1_Upgrading from MPC03 to MPC6515.zipPart2_Upgrading from MPC03 to MPC6515.zipPart3_Upgrading from MPC03 to MPC6515.zip