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34 mul (multiply word data), Mul (multiply word data) – FUJITSU FR family 32-bit microcontroller instruction manuel CM71-00101-5E User Manual

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CHAPTER 7 DETAILED EXECUTION INSTRUCTIONS

7.34

MUL (Multiply Word Data)

Multiplies the word data in "Rj" by the word data in "Ri" as signed numbers, and stores
the resulting signed 64-bit data with the high word in the multiplication/division register
(MDH), and the low word in the multiplication/division register (MDL).

■

MUL (Multiply Word Data)

Assembler format:

MUL 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 operation result is "0", cleared otherwise.

V:

Cleared when the operation result is in the range -2147483648 to 2147483647, set otherwise.

C:

Unchanged

Execution cycles:

5 cycles

Instruction format:

N

Z

V

C

C

C

C

–

MSB

LSB

1

0

1

0

1

1

1

1

Rj

Ri

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