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FMULT (Super FX): Difference between revisions

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'''FMULT''' is a [[Super FX]] instruction that performs a signed multiplication.  The exact speed depends on the state of the [[CFGR]] register.
'''FMULT''' is a [[Super FX]] instruction that performs a signed multiplication.  The two factors are the [[source register]] and R6.  The upper 16 bits of the 32-bit product are stored in the [[destination register]].  Bit 15 of the product is stored in [[CY]].  The lower 15 bits of the product appear to be discarded.
 
The exact speed depends on the state of the [[CFGR]] register.


=== See Also ===
=== See Also ===

Revision as of 00:52, 27 November 2023

Basic Info
Opcode Length ROM Speed RAM Speed Cache Speed
9F 1 byte 7 or 11 cycles 7 or 11 cycles 4 or 8 cycle
Flags Affected
B ALT1 ALT2 O/V S CY Z
0 0 0 .

FMULT is a Super FX instruction that performs a signed multiplication. The two factors are the source register and R6. The upper 16 bits of the 32-bit product are stored in the destination register. Bit 15 of the product is stored in CY. The lower 15 bits of the product appear to be discarded.

The exact speed depends on the state of the CFGR register.

See Also

External Links