Z80 Instruction Set

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Data Movement

EX Three possible arguments:

EX DE, HL Swaps H with D and L with E

EX AF, AF' Swaps AF with its shadow

EX (SP), HL Swaps (SP) with L and (SP+1) with H. Index registers are also valid

EXX Swap BC, DE and HL with their shadows

LD Four main arguments:

LD reg, # Sets the eight or 16 bit contents of reg to #

LD reg2, reg1 Copies the contents of 8 bit reg1 to reg2

LD (imm16), reg Copies the value of 8 or 16 bit reg to 16 bit memory address imm16. Programmers should remember that 16 bit values are stored little-endian.

LD reg, (imm16) Does the opposite of LD (imm16), reg