LMULT: Difference between revisions

Latest revision as of 12:11, 22 December 2023


Basic Info
Opcode	Length	ROM Speed	RAM Speed	Cache Speed
3D9F	2 bytes	10 or 14 cycles	10 or 14 cycles	5 or 9 cycles


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

LMULT is a signed multiplication Super FX instruction. The exact speed depends on the state of the CFGR register.

LMULT utilizes the 8-bit multiplier four times.^[3]

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 {| class="wikitable" style="float:right;clear:right;width:30%"
-!colspan="9"|Flags Clobbered
+!colspan="9"|Flags Affected
 |+
 |B
-|ALT1
+|[[ALT1]]
-|ALT2
+|[[ALT2]]
-|O/V
+|[[O/V]]
 |S
-|CY
+|[[CY]]
 |Z
 |+
@@ Line 35: / Line 35: @@
 |}
-'''LMULT''' is a signed multiplication [[Super FX]] instruction.
+'''LMULT''' is a signed multiplication [[Super FX]] instruction.  The exact speed depends on the state of the [[CFGR]] register.
+LMULT utilizes the 8-bit multiplier four times.<sup>[3]</sup>
 === See Also ===
 * [[FMULT]]
+* [[UMULT]]
+* [[Partial Product Buffer]]
 === External Links ===
-* Official Nintendo documentation on LMULT: [https://archive.org/details/SNESDevManual/book2/page/n230 page 2-9-73 of Book II]
+# Official Nintendo documentation on LMULT: [https://archive.org/details/SNESDevManual/book2/page/n229 page 2-9-73 of Book II]
+# example: [https://archive.org/details/SNESDevManual/book2/page/n230 page 2-9-74 of Book II], lbid.
+# https://archive.org/details/SNESDevManual/book2/page/n155
 [[Category:ASM]]
 [[Category:Super FX]]