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; *********************************************** 
; * NAME    : assembly function library		* 
; * Version : 07.JUL.2000			* 
; *********************************************** 
 
	AREA |C$$code|, CODE, READONLY 
 
	EXPORT	ChangeMemCon 
 
 
 
;void ChangeMemCon(); 
ChangeMemCon 
    stmfd   sp!,{r4-r9}	    ;Assembler uses the high registers(r4~).  
	    
    ldmia   r0,{r1-r9} 
    ldr	    r0,=0x01c80004  ;BANKCON0 Address 
    stmia   r0,{r1-r9} 
 
    ldmfd   sp!,{r4-r9} 
 
    mov	    pc,lr 
 
 
 
	EXPORT	DisableInterrupt 
DisableInterrupt 
;This function works only if the processor is in previliged mode. 
 
NOINT	    EQU	0xc0 
 
    mrs	    r0,cpsr 
    orr	    r0,r0,#NOINT 
    msr	    cpsr_cxsf,r0		 
 
    mov	    pc,lr 
 
 
	EXPORT	EnableInterrupt 
EnableInterrupt 
;This function works only if the processor is in previliged mode. 
 
    mrs	    r0,cpsr 
    bic	    r0,r0,#NOINT 
    msr	    cpsr_cxsf,r0		 
 
    mov	    pc,lr 
 
	END