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CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.37 MULUH (Multiply Unsigned Half-word Data)
Multiplies the half-word data in the lower 16 bits of "Rj" by the half-word data in the
lower 16 bits of "Ri" as unsigned numbers, and stores the resulting unsigned 32-bit
data in the multiplication/division register (MDL).
The multiplication/division register (MDH) is undefined.
■ MULUH (Multiply Unsigned Half-word Data)
Assembler format: MULUH Rj, Ri
Operation: Rj × Ri → MDL
Flag change:
N: Set when the MSB of the "MDL" of the operation result is "1", cleared when the MSB is "0".
Z: Set when the "MDL" of the operation result is "0", cleared otherwise.
V: Unchanged
C: Unchanged
Execution cycles: 3 cycles
Instruction format:
NZVC
CC– –
MSB LSB
10111011 Rj Ri