www.pudn.com > C8051F30x.rar > ram_fill.asm

;----------------------------------------------------------------------------- 
;	Copyright (C) 2004 Silicon Laboratories, Inc. 
; 
; 	FILE NAME  	: RAM_FILL.ASM  
;  DATE        : 12 OCT 01 
; 	TARGET MCU	: C8051F30x 
; 	DESCRIPTION	: This program disables the watchdog timer and fills RAM with  
;				  	  value equal to address. 
; 
;  	NOTES: 
;	(1)	This note intentionally left blank. 
; 
; 
;----------------------------------------------------------------------------- 
 
$include (c8051F300.inc)                  ; Include register definition file 
 
;----------------------------------------------------------------------------- 
; EQUATES 
;----------------------------------------------------------------------------- 
 
 
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; VARIABLES 
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;----------------------------------------------------------------------------- 
; RESET and INTERRUPT VECTORS 
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            ; Reset Vector 
            CSEG AT 00h					 
            ljmp  Main                    ; Jump beyond interrupt vector  
                                          ; space. 
 
;-----------------------------------------------------------------------------
; CODE SEGMENT
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RAM_Fill    segment  CODE 

            rseg     RAM_Fill             ; Switch to this code segment. 
            using    0                    ; Specify register bank for the 
                                          ; following program code.

Main:
            ; Disable the WDT. 
            anl   PCA0MD, #NOT(040h)      ; clear Watchdog Enable bit

            mov   R0, #00H                ; use R0 as pointer to memory location  
loop:       mov   @R0, AR0                ; write to indexed address with  
                                          ; address value 
            djnz  R0, loop                ; check if finished 
	 
            sjmp  $                       ; loop here forever 
 
 
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; End of file. 
 
END