Motorola M68EZ328ADS user manual #$9,PGSEL, #MONSTACKTOP,A7, #0,RTCWD, #$08,ICEMCR, #$07,ICEMSR

Freescale Semiconductor, Inc.

ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005

Monitor Initialization Code Freescale Semiconductor, Inc.

.global ___reset

___reset: rom_start:

ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005

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

D-43M68EZ328ADS v2.0 USER’S MANUALMOTOROLA

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