BLT (Super FX): Difference between revisions

Latest revision as of 01:11, 11 December 2023


Basic Info
Opcode	Length	ROM Speed	RAM Speed	Cache Speed
06	2 bytes	6 cycles	6 cycles	2 cycles


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

BLT (Branch if Less Than) is a Super FX opcode that performs a jump if the negative flag is unequal to the O/V flag, effectively checking for a signed less-than comparison (compare BCC which is an unsigned less-than comparison).

According to fullsnes, the official documentation has BLT exchanged with BGE. ^[2]

External Links

Official Nintendo documentation on BLT: Page 2-9-24 of Book II
https://problemkaputt.de/fullsnes.htm#snescartgsuncpumisc
example: page 2-9-25, lbid.

@@ Line 1: / Line 1: @@
-#redirect [[BCC]]
+{| class="wikitable" style="float:right;clear:right;width:40%"
+!colspan="8"|Basic Info
+|+
+|'''Opcode'''
+|'''Length'''
+|'''ROM Speed'''
+|'''RAM Speed'''
+|'''Cache Speed'''
+|+
+|06
+|2 bytes
+|6 cycles
+|6 cycles
+|2 cycles
+|}
+{| class="wikitable" style="float:right;clear:right;width:30%"
+!colspan="9"|Flags Affected
+|+
+|B
+|[[ALT1]]
+|[[ALT2]]
+|[[O/V]]
+|S
+|[[CY]]
+|Z
+|+
+|0
+|0
+|0
+|.
+|.
+|.
+|.
+|}
+'''BLT''' (Branch if Less Than) is a [[Super FX]] opcode that performs a jump if the [[negative flag]] is unequal to the [[O/V]] flag, effectively checking for a signed less-than comparison (compare [[BCC]] which is an unsigned less-than comparison).
+According to [[fullsnes]], the official documentation has BLT exchanged with [[BGE]]. <sup>[2]</sup>
+=== See also ===
+* [[BGE]]
+* [[BCC (Super FX)]]
+=== External Links ===
+# Official Nintendo documentation on BLT: [https://archive.org/details/SNESDevManual/book2/page/n180 Page 2-9-24 of Book II]
+# https://problemkaputt.de/fullsnes.htm#snescartgsuncpumisc
+# example: [https://archive.org/details/SNESDevManual/book2/page/n181 page 2-9-25], lbid.
+[[Category:ASM]]
+[[Category:Super FX]]
+[[Category:GSU Control Instructions]]