MUL | CS+ V4.01.00

Renesas Electronics

MUL	Multiplication	MUL
	MULtiply

[Syntax]

(1)MUL src, dest

(2)MUL src, src2, dest

[Operation]

(1)dest = src * dest;

(2)dest = src * src2;

[Function]

-	(1)This instruction multiplies src and dest and places the result in dest.

-	The calculation is performed in 32 bits and the lower-order 32 bits of the result are placed.

-	The operation result will be the same whether a singed or unsigned multiply is executed.

-	(2)This instruction multiplies src and src2 and places the result in dest.

-	The calculation is performed in 32 bits and the lower-order 32 bits of the result are placed.

-	The operation result will be the same whether a singed or unsigned multiply is executed.

Note	The accumulator (ACC) is used to perform the function. The value of ACC after executing the instruction is undefined.

[Instruction Format]

Syntax	Processng Size	src	src2	dest	Code size (Byte)
(1)MUL src, dest	L	#UIMM:4	-	Rd	2
	L	#SIMM:8	-	Rd	3
	L	#SIMM:16	-	Rd	4
	L	#SIMM:24	-	Rd	5
	L	#IMM:32	-	Rd	6
	L	Rs	-	Rd	2
	L	[Rs].memex	-	Rd	2 (memex == UB) 3 (memex != UB)
	L	dsp:8[Rs].memex	-	Rd	3 (memex == UB) 4 (memex != UB)
	L	dsp:16[Rs].memex	-	Rd	4 (memex == UB) 5 (memex != UB)
	L	Rs	Rs2	Rd	3

[Flag Change]

-	This instruction does not affect the states of flags.

[Description Example]

MUL #10, R2

MUL R1, R2

MUL [R1], R2

MUL 4[R1].W, R2

MUL R1, R2, R3