Echelon Neuron Uživatelský manuál stáhnout pdf (Strana 121)

RET (Return from Call)

The RET instruction performs a return-from-call operation. The RET

instruction uses the implicit addressing mode.

The RET instruction applies to Series 3100, 5000, and 6000 devices.

Syntax:

The RET instruction requires no operands:

RET

Table 45 describes the attributes of the RET instruction.

Table 45. RET Instruction

Instruction Hexadecimal

Opcode

Instruction

Size (Bytes)

CPU Cycles

Required

Affect on

Carry Flag

RET 31 1 4 None

Example:

The following example calls a function named clearFlags. After the function

completes, the RET instruction returns from the function, and the function

continues operation with the instruction that follows CALL instruction.

call clearFlags ; ( )

...

br somewhere

clearFlags

...

ret ; return to caller

Neuron Assembly Language Reference 111

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Echelon Neuron Uživatelský manuál Strana 121