GETB (Super FX): Difference between revisions

Latest revision as of 11:38, 21 December 2023


Basic Info
Opcode	Length	ROM Speed	RAM Speed	Cache Speed
EF	1 byte	3 to 8 cycles	3 to 9 cycles	1 to 6 cycle


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

GETB (Get Byte) is a Super FX instruction that loads one byte from the ROM buffer into the low byte of the destination register. The high byte of the destination register is zeroed.

External Links

Official Super Nintendo development manual on GETB: 9.35 on Page 2-9-49 of Book II
example: page 2-9-50 of Book II, lbid

@@ Line 1: / Line 1: @@
-'''GETB''' is a [[Super FX]] instruction that loads one byte from the ROM buffer.
+{| class="wikitable" style="float:right;clear:right;width:50%"
-{| class="wikitable" style="float:right;clear:right;width:40%"
 !colspan="8"|Basic Info
 |+
@@ Line 18: / Line 16: @@
 {| 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 36: / Line 34: @@
 |.
 |}
+'''GETB''' (Get Byte) is a [[Super FX]] instruction that loads one byte from the [[ROM buffer]] into the low byte of the [[destination register]].  The high byte of the destination register is zeroed.
+=== See Also ===
+* [[GETBH]]
+* [[GETBS]]
+* [[ROMB]]
 === External Links ===
-* Official Nintendo documentation on GETB: [https://archive.org/details/SNESDevManual/book2/page/n205 Page 2-9-49 of Book II]
+* Official Super Nintendo development manual on GETB: 9.35 on [https://archive.org/details/SNESDevManual/book2/page/n205 Page 2-9-49 of Book II]
+* example: [https://archive.org/details/SNESDevManual/book2/page/n206 page 2-9-50 of Book II], lbid
 [[Category:ASM]]
 [[Category:Super FX]]
 [[Category:Data Transfer Instructions]]
+[[Category:One-byte Instructions]]