PM_Opc_UNPACK

== UNPACK = Unpack Nibbles ==

Hex	Mnemonic	Cycles
DF	UNPACK	8

Execute

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

; UNPACK

B = A SHR 4 A = A AND 0x0F

Description

Unpack byte in register A into 2 nibbles, storing them into register A and B.

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

Conditions

None

Examples

; A = 0x21 UNPACK ; A = 0x01 ; B = 0x02

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