PLB: Difference between revisions

Revision as of 10:44, 7 December 2023


Basic Info
Addressing Mode	Opcode	Length	Speed
Stack (Pull)	AB	1 byte	4 cycles


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

PLB (PulL data Bank) is a 65c816 instruction that pulls the byte at the top of the stack into the data bank register. PLB is the only instruction that modifies that register. The stack pointer is incremented before the byte it points to is pulled into the register.

External Links

Eyes & Lichty page 484, on PLB: https://archive.org/details/0893037893ProgrammingThe65816/page/n510
Labiak page 168 on PLB: https://archive.org/details/Programming_the_65816/page/n178
snes9x implementation of PLB: https://github.com/snes9xgit/snes9x/blob/master/cpuops.cpp#L2032

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-'''PLB''' (PulL data Bank) is a [[65c816]] instruction that pulls the byte at the top of the [[stack]] into the [[data bank register]].  PLB is the only instruction that modifies that register.  The [[stack pointer]] is incremented before the byte it points is pulled into the register.
+'''PLB''' (PulL data Bank) is a [[65c816]] instruction that pulls the byte at the top of the [[stack]] into the [[data bank register]].  PLB is the only instruction that modifies that register.  The [[stack pointer]] is incremented before the byte it points to is pulled into the register.
 === See Also ===