LM (Super FX): Difference between revisions

Latest revision as of 11:18, 31 July 2024


Basic Info
Addressing Mode	Opcode	Length	ROM Speed	RAM Speed	Cache Speed
	3DFnxxxx	4 bytes	20 cycles	21 cycles	11 cycles


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

LM (Load from raM) is a Super FX instruction that loads data from Game Pak RAM.

The ALT0 state is restored.

LM Rn, (xx)

Let:

(70:bacch) = 28h
(70:bacdh) = 96h
RAMBR = 70h

After executing LM R₉, (0bacch):

R₉ = 9628h

@@ Line 1: / Line 1: @@
-{| class="wikitable" style="float:right;clear:right;width:40%"
+{| class="wikitable" style="float:right;clear:right;width:50%"
 !colspan="8"|Basic Info
 |+
+|'''Addressing Mode'''
 |'''Opcode'''
 |'''Length'''
@@ Line 8: / Line 9: @@
 |'''Cache Speed'''
 |+
+|
 |3DFnxxxx
 |4 bytes
@@ Line 16: / Line 18: @@
 {| class="wikitable" style="float:right;clear:right;width:30%"
-!colspan="9"|Flags Clobbered
+!colspan="9"|Flags Affected
 |+
-|B
+|[[B Flag|B]]
-|ALT1
+|[[ALT1]]
-|ALT2
+|[[ALT2]]
-|O/V
+|[[O/V]]
-|S
+|[[Sign Flag|S]]
-|CY
+|[[CY]]
-|Z
+|[[Zero Flag|Z]]
 |+
 |0
@@ Line 35: / Line 37: @@
 |}
-'''LM''' is a [[Super FX]] instruction that loads data from [[Game Pak]] RAM.
+'''LM''' (Load from raM) is a [[Super FX]] instruction that loads data from [[Game Pak]] RAM.
+The [[ALT0]] state is restored.
+==== Syntax ====
+<pre>
+LM Rn, (xx)
+</pre>
+==== Example ====
+Let:
+ (70:bacch) = 28h
+ (70:bacdh) = 96h
+ RAMBR = 70h
+After executing LM R<sub>9</sub>, (0bacch):
+ R<sub>9</sub> = 9628h
+=== See Also ===
+* [[Lunar Magic]]
+* [[LMS]]
+* [[RAMB]]
+* [[ALT1]]
+* [[SM]]
+* [[SMS]]
 === External Links ===
-* Official Nintendo documentation on LM: [https://archive.org/details/SNESDevManual/book2/page/n226 Page 2-9-70 of Book II]
+* Official Nintendo documentation on LM: 9.50 on [https://archive.org/details/SNESDevManual/book2/page/n226 Page 2-9-70 of Book II]
 [[Category:ASM]]
 [[Category:Super FX]]
 [[Category:Data Transfer Instructions]]