|-
| reti || 11011001 || 4 || pc := (sp), sp += 2 || Return from Interrupt
|}
=== CPU control group ===
{| class="wikitable" style="white-space: nowrap;"
|-
! Instruction !! Opcode !! Cycles !! Z !! N !! H !! C !! Effect !! Description
|-
| di || 11110011 || 1 || - || - || - || - || ime := 0 || Disable Interrupts
|-
| ei || 11111011 || 1 || - || - || - || - || ime := 1 after the next instruction || Enable Interrupts
|-
| halt || 01110110 || 1 || - || - || - || - || wait for interrupt || Suspends CPU operation
|-
| stop || 00010000 || 1 || - || - || - || - || wait for reset signal || Stops the system clock and LCD controller
|-
| nop || 00000000 || 1 || - || - || - || - || nothing || No Operation
|-
| scf || 00110111 || 1 || - || 0 || 0 || 1 || nothing else || Set Carry Flag
|-
| ccf || 00111111 || 1 || - || 0 || X || X || hf := cf, cf := ~cf || Complement Carry Flag
|}