Motorola HC12 - page 226

User’s Manual MCUez HC12 Assembler
226 Operating Procedures MOTOROLA
Operating Procedures
Example:
XDEF ResetFunc
DataSec: SECTION
Data:DS.W 5 ;Each interrupt increments an element of table
CodeSec: SECTION ; Implementation of the interrupt functions
IRQFunc:
LDAB #0
BRA int
XIRQFunc:
LDAB #2
BRA int
SWIFunc:
LDAB #4
BRA int
OpCodeFunc:
LDAB #6
BRA int
ResetFunc:
LDAB #8
BRA entry
DummyFunc:
RTI
int:
LDX #Data
ABX
INC 0, X
RTI
entry:
LDS #$AFE
loop:BRA loop
VectorTable:SECTION ; Definition of the vector table
IRQInt: DC.W IRQFunc
XIRQInt: DC.W XIRQFunc
SWIInt: DC.W SWIFunc
OpCodeInt: DC.W OpCodeFunc
COPResetInt: DC.W DummyFunc; No function attached to COP Reset
ClMonResInt: DC.W DummyFunc; No function attached to Clock
; MonitorReset
ResetInt : DC.W ResetFunc