User`s manual

Monitor Initialization Code
D-49 M68EZ328ADS v2.0 USER’S MANUAL MOTOROLA
move.w #$7,ICEMSR ; clear level 7 interrupt
or.w #$FF80,ISR
endm ; return non-zero in D0 if ABORT
INT_DOG: macro
endm
; **************************************************
; Macros for use at application startup (EXEC)
; and stop (DONE). Normally these are empty.
; **************************************************
USR_EXEC: macro
endm
USR_DONE: macro
endm
****************************************************************************
* RESET OPTIONS
****************************************************************************
; **************************************************
; Contents of the "usr_reset" section. In the usual
; case, this is two longwords long, with the first word
; containing the value with which the processor
; loads up its stack pointer, and the second of
; which is the value with which the processor
; loads up its program counter. This will bring up
; the monitor on a hardware reset.
; **************************************************
USR_RESET: macro
dc.l MON_STACKTOP ; stack pointer (default)
dc.l reset$$$ ; program counter (default)
dcb.l 6,0
endm
; **************************************************
; Hard reset macro - contains very high priority
; instructions which must be executed immediately
; upon a hardware reset.
; **************************************************
RESET_HARD: macro
move.b #$9,PGSEL ; config PG0/DTACK to GPI/O,input
move.w #$2410,PLLCR ; sysclk = VCO/1, enable clko
move.l #MON_STACKTOP,A7 ; Install stack pointer
move.w #$2700,sr ; mask off all interrupts
move.b #$1C,SCR ; enable bus error timeout bit
move.w #0,RTCWD ; disable watch dog
move.b #$03,PFSEL ; select A23-A20, CLKO, CSA1
move.b #$00,PBSEL ; Config port B for chip select A,B,C and D
move.b #$00,PESEL ; select *DWE
move.w #$08,ICEMCR ; disable ICEM vector hardmap
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
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ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005
ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005