Datasheet

Instruction Set Description

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4.6.3.20 POPX

* POPX.A Restore single address-word from the stack

* POPX.[W] Restore single word from the stack

* POPX.B Restore single byte from the stack

POPX.A dst

Syntax

POPX dst or POPX.W dst

POPX.B dst

Operation Restore the 8-/16-/20-bit value from the stack to the destination. 20-bit addresses are

possible. The SP is incremented by two (byte and word operands) and by four

(address-word operand).

MOVX(.B,.A) @SP+,dst

Emulation

Description The item on TOS is written to the destination operand. Register mode, Indexed mode,

Symbolic mode, and Absolute mode are possible. The SP is incremented by two or

four.

Note: The SP is incremented by two also for byte operations.

Status Bits Status bits are not affected.

Mode Bits OSCOFF, CPUOFF, and GIE are not affected.

Example Write the 16-bit value on TOS to the 20-bit address &EDE

POPX.W &EDE ; Write word to address EDE

Example Write the 20-bit value on TOS to R9

POPX.A R9 ; Write address-word to R9

236

CPUX SLAU144J–December 2004–Revised July 2013

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