Electronics America 4-Bit Single-Chip Microcomputer User's Manual

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CHAPTER 9. INSTRUCTION SET
OR A, @HL
Function: A ← A ∨ (HL)
ORs the contents of the A register and the data memory contents addressed by register pair HL and sets
the result into the A register.
XOR A, @HL
Function: A ← A ∨ (HL)
Exclusive-ORs the contents of the A register and the data memory contents addressed by register pair HL
and sets the result into the A register.