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Instruction Descriptions 4–155
4.13.3 Pack Bytes
Format:
Operation:
CASE
PKLB:
BEGIN
Rc<07:00> ← Rbv<07:00>
Rc<15:08> ← Rbv<39:32>
Rc<63:16> ← 0
END
PKWB:
BEGIN
Rc<07:00> ← Rbv<07:00>
Rc<15:08> ← Rbv<23:16>
Rc<23:16> ← Rbv<39:32>
Rc<31:24> ← Rbv<55:48>
Rc<63:32> ← 0
END
ENDCASE
Exceptions:
Instruction mnemonics:
Qualifiers:
Description:
For PKLB, the component longwords of Rb are truncated to bytes and written to the lower two
byte positions of Rc. The upper six bytes of Rc are written with zero.
For PKWB, the component words of Rb are truncated to bytes and written to the lower four
byte positions of Rc. The upper four bytes of Rc are written with zero.
PKxB Rb.rq,Rc.wq
! Operate Format
None
PKLB Pack Longwords to Bytes
PKWB Pack Words to Bytes
None