Motorola HC12 Manuale Utente

Assembler Syntax

Source Line

MCUez HC12 Assembler

User’s Manual

MOTOROLA

Assembler Syntax

129

The operand fields, when present, follow the operation field and are separated
by white space. When two or more operand subfields appear within a statement,
a comma must separate them.

The address mode notations in

In

•

xysp stands for one of the index registers: X, Y, SP, PC, or PCR

•

xys stands for one of the index registers: X, Y, or SP

•

abd stands for one of the accumulators: A, B, or D

Inherent

No operands

Direct

<8-bit address>

Extended

<16-bit address>

Relative

<PC relative, 8-bit offset> or
<PC relative, 16-bit offset>

Immediate

#<immediate 8-bit expression> or
#<immediate 16-bit expression>

Indexed, 5-bit offset

<5-bit offset>, xysp

Indexed, pre-decrement

<3-bit offset>, -xys

Indexed, pre-increment

<3-bit offset>, +xys

Indexed, post-decrement

<3-bit offset>, xys-

Indexed, post-increment

<3-bit offset>, xys+

Indexed, accumulator offset

abd, xysp

Indexed, 9-bit offset

<9-bit offset>, xysp

Indexed, 16-bit offset

<16-bit offset>, xysp

Indexed-Indirect, 16-bit offset

[<16-bit offset>, xysp]

Indexed-Indirect, D accumulator offset

[D, xysp]