BRL: Difference between revisions

Latest revision as of 11:57, 6 August 2024


Basic Info
Addressing Mode	Opcode	Length	Speed
Program Counter Relative Long	82	3 bytes	4 cycles


Flags Affected
N	V	M	X	D	I	Z	C
.	.	.	.	.	.	.	.

BRL (Branch Long) is a 65c816 instruction that performs an unconditional jump. The target can be anywhere within the current bank.

The 16 bit operand is not an absolute address, but a signed displacement from -32768 to 32767.

BRL is relocatable. No flags are affected.

BRL label

BRL works even in emulation mode.

@@ Line 35: / Line 35: @@
 |}
-'''BRL''' is a [[65c816]] instruction that performs an unconditional jump.
+'''BRL''' (Branch Long) is a [[65c816]] instruction that performs an unconditional jump.  The target can be anywhere within the current [[bank]].
+The 16 bit operand is not an absolute address, but a signed displacement from -32768 to 32767.
+BRL is relocatable.  No flags are affected.
+==== Syntax ====
+<pre>
+BRL label
+</pre>
+BRL works even in [[emulation mode]].
 === See Also ===
 * [[BRA]]
+* [[JMP]]
 === External Links ===
-* [[Eyes & Lichty]] page 438, on BRL: https://archive.org/details/0893037893ProgrammingThe65816/page/n464
+* [[Eyes & Lichty]], [https://archive.org/details/0893037893ProgrammingThe65816/page/438 page 438] on BRL
-* [[Labiak]] page 127 on BRL: https://archive.org/details/Programming_the_65816/page/n137
+* [[Labiak]], [https://archive.org/details/Programming_the_65816/page/n137 page 127] on BRL
 * snes9x implementation of BRL: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L1405
+* Clark, Bruce. http://www.6502.org/tutorials/65c816opcodes.html#6.2.1.2
 [[Category:ASM]]
 [[Category:65c816 additions]]
+[[Category:Three-byte Instructions]]
+[[Category:Four-cycle Instructions]]
+[[Category:Relocatable Instructions]]
+[[Category:Single Admode Mnemonics]]