Changes
Z80
,/* CPU control group */
! Instruction !! Opcode !! NOPs !! Cycles !! S !! Z !! 5 !! H !! 3 !! P !! N !! C !! Effect !! Description
|-
| pop pp || 11pp0001 || 3 || 10 (4,3,3) || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || pp := (sp), sp += 2 ||rowspan=2|Pop a value from the stack
|-
| pop qq || DD/FD 11qq0001 || 4 || 14 (4,4,3,3) || - || - || - || - || - || - || - || - || qq := (sp), sp += 2
|-
| push pp || 11pp0101 || 4 || 11 (5,3,3) || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || sp -= 2, (sp) := pp ||rowspan=2|Push a value onto the stack
|-
| push qq || DD/FD 11qq0101 || 5 || 15 (4,5,3,3) || - || - || - || - || - || - || - || - || sp -= 2, (sp) := qq
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| ld sp,hl || 11111001 || 2 || 6 (6) || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || rowspan=2| - || sp := hl ||rowspan=2|Stack Pointer Load
|-
| ld sp,ixy || DD/FD 11111001 || 3 || 10 (4,6) || - || - || - || - || - || - || - || - || sp := ixy
|-
| exx || 11011001 || 1 || 4 (4) || - || - || - || - || - || - || - || - || bc, de, hl <=> bc', de', hl' ||rowspan=5|Exchange
