User`s manual

Monitor Initialization Code
D-43 M68EZ328ADS v2.0 USER’S MANUAL MOTOROLA
.global ___reset
___reset:
rom_start:
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
move.w #$07,ICEMSR ; clear level 7 interrupt
;*****************************
; Init Code for 512Kx16 Flash
;*****************************
move.w #$0400,GRPBASEA ; GROUPA BASE(FLASH), Start address=0x800000
move.w #$0189,CSA ; 2MB each, 0ws, FLASH,
;**********************************
; Init Code 4Mx16 (12/10) EDO DRAM
;**********************************
move.w #$8F00,DRAMCFG ; DRAM Memory Config Register
; Col Address = PA1-PA10; Row Address = PA11-PA22
move.w #$9667,DRAMCTL ; DRAM Control Register, 0ws
move.w #$0000,GRPBASED ; GROUPA BASE(DRAM),
;Start address=0x000000-0x7FFFFF
move.w #$069F,CSD ; enable DRAM cs
;**********************************
; Init Code for EMUCS
;**********************************
move.w #$30,EMUCS ; 3ws
clr.l d0
clr.l d1
clr.l d2
clr.l d3
clr.l d4
clr.l d5
clr.l d6
clr.l d7
;**********************************************************************
;
; LCD Temp init for screen protection
;
;**********************************************************************
move.b #0,PCSEL
move.b #0,PCPDEN
Freescale Semiconductor, I
Freescale Semiconductor, Inc.
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ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005
ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005