MULT (Super FX)

Basic Info
Addressing Mode	Opcode	Length	ROM Speed	RAM Speed	Cache Speed
Implied (type 1)	8n	1 byte	3 or 5 cycles	3 or 5 cycles	1 or 2 cycles
Immediate	3E8n	2 bytes	6 or 8 cycles	6 or 8 cycles	2 or 3 cycles

Flags Affected
B	ALT1	ALT2	O/V	S	CY	Z
0	0	0	.		.

MULT is a Super FX instruction that performs a signed multiplication. One of the factors is the low byte of the source register. The other factor may be any register from R₀ to R₁₅ or an immediate int from 0 to 15. The product is stored in the destination register.

MULT utilizes the 8-bit multiplier only once, so it is fast.^[2]

The exact number of cycles depends on the state of the CFGR register.

Syntax

MULT Rn
MULT #n

See Also

• UMULT
• FMULT
• LMULT
• DIV2

External Links

1. Official Nintendo documentation on MULT: 9.66 on Page 2-9-93 of Book II
2. 8.2 "Multiplication Instructions" on page 2-8-16 of Book II, lbid.