Fujitsu CM71-00101-5E User Manual
122
CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS
7.35
MULU (Multiply Unsigned Word Data)
Multiplies the word data in "Rj" by the word data in "Ri" as unsigned numbers, and
stores the resulting unsigned 64-bit data with the high word in the multiplication/
division register (MDH), and the low word in the multiplication/division register (MDL).
stores the resulting unsigned 64-bit data with the high word in the multiplication/
division register (MDH), and the low word in the multiplication/division register (MDL).
■
MULU (Multiply Unsigned Word Data)
Assembler format:
MULU Rj, Ri
Operation:
Rj × Ri
→
MDH, 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: Cleared when the operation result is in the range 0 to 4294967295, set otherwise.
C: Unchanged
Execution cycles:
5 cycles
Instruction format:
N
Z
V
C
C
C
C
–
MSB
LSB
1
0
1
0
1
0
1
1
Rj
Ri