Motorola HC12 User Manual

Assembler Messages

Message Codes

MCUez HC12 Assembler

User’s Manual

MOTOROLA

Assembler Messages

305

Type:

Error

Description:

The offset between the current PC and label specified as the PC
relative address is not in the range of a signed 9-bit value
(smaller than –256 or bigger than 255). A 9-bit signed PC
relative offset is expected in these instructions:

• Decrement-and-branch instructions: DBEQ, DBNE

• Increment-and-branch instructions: IBEQ, INE

• Test-and-branch instructions: TBEQ, TBNE

Example:

DataSec: SECTION

var1:    DS.W 1

var2:    DS.W 10

CodeSec: SECTION

         …

         LDX  #var2

label:   LDD  var1

         CLR  1, X+

dummyBl: DCB.B 260, $A7

         DBNE D, label

Tips:

Replace the instruction with the following portion of code.

• For decrement and branch:

DBNE  D, label

SUBD  #1
LBNE  label

DBNE  A, label

DECA
LBNE  label

DBNE  B, label

DECB
LBNE  label

DBNE  X, label

DEX
LBNE  label

DBNE  Y, label

DEY
LBNE  label

DBNE  S, label

DES
LBNE  label