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A-7
INSTRUCTION SET REFERENCE
Table A-6. Instruction Set
Mnemonic Operation Instruction Format
ADD
(2 operands)
ADD WORDS. Adds the source and
destination word operands and stores the
sum into the destination operand.
(DEST)
← (DEST) + (SRC)
DEST, SRC
ADD wreg, waop
(011001aa) (waop) (wreg)
PSW Flag Settings
ZNCVVTST
✓✓✓✓↑—
ADD
(3 operands)
ADD WORDS. Adds the two source word
operands and stores the sum into the
destination operand.
(DEST)
← (SRC1) + (SRC2)
DEST, SRC1, SRC2
ADD Dwreg, Swreg, waop
(010001aa) (waop) (Swreg) (Dwreg)
PSW Flag Settings
ZNCVVTST
✓✓✓✓↑—
ADDB
(2 operands)
ADD BYTES. Adds the source and
destination byte operands and stores the sum
into the destination operand.
(DEST)
← (DEST) + (SRC)
DEST, SRC
ADDB breg, baop
(011101aa) (baop) (breg)
PSW Flag Settings
ZNCVVTST
✓✓✓✓↑—
ADDB
(3 operands)
ADD BYTES. Adds the two source byte
operands and stores the sum into the
destination operand.
(DEST)
← (SRC1) + (SRC2)
DEST, SRC1, SRC2
ADDB Dbreg, Sbreg, baop
(010101aa) (baop) (Sbreg) (Dbreg)
PSW Flag Settings
ZNCVVTST
✓✓✓✓↑—
ADDC ADD WORDS WITH CARRY. Adds the
source and destination word operands and
the carry flag (0 or 1) and stores the sum into
the destination operand.
(DEST) ← (DEST) + (SRC) + C
DEST, SRC
ADDC wreg, waop
(101001aa) (waop) (wreg)
PSW Flag Settings
ZNCVVTST
↓✓✓✓↑—