Difference between revisions of "PM Opc UNPACK"
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(UNPACK Instruction) |
(No difference)
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Revision as of 02:59, 20 April 2009
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
