Miscellaneous Instructions

Miscellaneous instructions

NOP No Operation

CPL Invert Accumulator

NEG Negate Accumulator (two's compliment)

HALT the cpu

CCF Compliment Carry Flag

Invert Carry Flag

SCF Set Carry Flag

Set Carry Flag

DI EI Interrupt enable

Enable/Disable interrupts

IM Interrupt Mode

Select interrupt mode


Adjust accumulator for BCD addition and subtraction operations