We've just updated MediaWiki and its underlying software. If anything doesn't look or work quite right, please mention it to us. --RanAS
MULT (Super FX): Difference between revisions
From SnesLab
(Clobbered -> affected) |
(8-bit multiplier) |
||
| (4 intermediate revisions by the same user not shown) | |||
| Line 19: | Line 19: | ||
|+ | |+ | ||
|B | |B | ||
|ALT1 | |[[ALT1]] | ||
|ALT2 | |[[ALT2]] | ||
|O/V | |[[O/V]] | ||
|S | |S | ||
|CY | |[[CY]] | ||
|Z | |Z | ||
|+ | |+ | ||
| Line 35: | Line 35: | ||
|} | |} | ||
'''MULT''' is a [[Super FX]] instruction that performs a signed multiplication. | '''MULT''' is a [[Super FX]] instruction that performs a signed multiplication. The product is stored in the [[destination register]]. | ||
MULT utilizes the 8-bit multiplier only once, so it is fast.<sup>[2]</sup> | |||
=== See Also === | === See Also === | ||
* [[UMULT]] | * [[UMULT]] | ||
* [[FMULT]] | * [[FMULT]] | ||
* [[LMULT]] | |||
=== External Links === | === External Links === | ||
# Official Nintendo documentation on MULT: [https://archive.org/details/SNESDevManual/book2/page/n249 Page 2-9-93 of Book II] | |||
# https://archive.org/details/SNESDevManual/book2/page/n155 | |||
[[Category:ASM]] | [[Category:ASM]] | ||
[[Category:Super FX]] | [[Category:Super FX]] | ||
[[Category:Arithmetic Operation Instructions]] | [[Category:Arithmetic Operation Instructions]] | ||
[[Category:Two-byte Instructions]] | |||
Latest revision as of 12:16, 22 December 2023
| Basic Info | |||||||
|---|---|---|---|---|---|---|---|
| Opcode | Length | ROM Speed | RAM Speed | Cache Speed | |||
| 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. The product is stored in the destination register.
MULT utilizes the 8-bit multiplier only once, so it is fast.[2]
See Also
External Links
- Official Nintendo documentation on MULT: Page 2-9-93 of Book II
- https://archive.org/details/SNESDevManual/book2/page/n155