PLA (command)

PLA (short for "PulL Accumulator") is the mnemonic for a machine language instruction which retrieves a byte from the stack and stores it in the accumulator, and adjusts the stack pointer to reflect the removal of that byte.

Addressing mode

Opcode		Addressing mode	Assembler format	Length in bytes	Number of cycles
Dec	Hex
104	$68	Implied	PLA	1	4

PLA only supports the implied addressing mode, as shown in the table above.

CPU flags

PLA affects 2 of the CPU's status flags:

• The negative status flag is set if the retrieved byte is negative, i.e. has its most significant bit set.
• The zero flag is set if the retrieved byte is zero, or cleared if it is non-zero.