Motorola HC12 - page 287

Assembler Messages

Message Codes

MCUez HC12 Assembler User’s Manual

MOTOROLA Assembler Messages 287

12.3.47 A12003: Value is Truncated to One Byte

Type: Warning

Description: A word operand is speciﬁed in an assembly instruction

expecting a byte operand. This warning may be generated in

the following cases:

• A symbol located in a section, which is accessed using the

extended addressing mode, is specified as an operand in an

instruction expecting a direct operand.

• An external symbol imported using XREF is specified as an

operand in an instruction expecting a direct operand.

• The mask specified in BCLR, BSET, BRCLR, or BRSET is

bigger than 0xFF.

Example: XREF extData

dataSec: SECTION

data: DS.B 1

data2: DS.B 1

destination: DS.W 1

codeSec: SECTION

MOVB #data, destination

MOVB #extData, destination

BCLR data, #$54F

Tip: According to the reason why the warning was generated, the

warning can be avoided as follows:

• Specify the force operator .B at the end of the operand or <

in front of the operand.

• Use XREF.B to import the symbol.

Example:

XREF.B extData