Freescale semiconductor, i, Freescale semiconductor, inc – Motorola M68EZ328ADS User Manual

Page 44

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

;**********************************************************************

;

LCD Temp init for screen protection

;

;**********************************************************************

move.b

#0,PCSEL

move.b

#0,PCPDEN

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ARCHIVED BY FREESCALE SEMICONDUCTOR, INC. 2005

ARCHIVED BY FREESCALE SEMICONDUCT

OR,

INC.

2005