PM_Opc_PACK

== PACK = Pack Nibbles ==

Hex	Mnemonic	Cycles
DE	PACK	8

Execute

A        =  (8-Bits) Register A B        =  (8-Bits) Register B

; PACK

A = (A AND 0x0F) OR (B SHL 4)

Description

Pack low nibble of register A and B and return the formed byte into register A.

Register A forms the lower nibble and register B forms the higher nibble.

Conditions

None

Examples

; A = 0x01 ; B = 0x02 PACK ; A = 0x21 ; B = 0x02 (Remain unchanged)

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