www.pudn.com > Sunplusvoice.rar > sram.asm

////////////////////////////////////////////////////////////////// 
// Function: SRAM access function for SACM_DVR Auto Mode 
////////////////////////////////////////////////////////////////// 
.include hardware.inc 
.RAM  
.public  HighAddr       
.VAR  HighAddr 
 
.CODE 
//*********************************************************// 
// 写SRAM初始化 
//*********************************************************// 
.public _SP_InitWriteSRAM 
.public F_SP_InitWriteSRAM  
_SP_InitWriteSRAM:         .proc 
F_SP_InitWriteSRAM: 
		push r1 to [sp]          
        pop r1 from [sp] 
        retf  
        .endp 
 
//*********************************************************// 
//读SRAM初始化 
//*********************************************************// 
.public F_SP_InitReadSRAM  
.public _SP_InitReadSRAM  
 
_SP_InitReadSRAM:          .PROC 
F_SP_InitReadSRAM: 
		push r1 to [sp] 
        pop r1 from [sp] 
        retf  
        .ENDP 
 
//*********************************************************// 
//主调函数：main.c 
//从SRAM中读数据 
//*********************************************************//   
.public _SP_ReadSRAM  
_SP_ReadSRAM:              .PROC 
        push bp to [sp]      
        pop bp from [sp]  
        retf  
        .ENDP 
        
.PUBLIC F_SP_ReadSRAM 
F_SP_ReadSRAM: 
        push r2,r4 to [sp] 
        
       
		pop r2,r4 from [sp]       
        retf  
 
//*********************************************************// 
//向SRAM中写数据 
//*********************************************************//   
.public _SP_WriteSRAM  
_SP_WriteSRAM: .PROC 
        push bp to [sp]  
       
        pop bp from [sp]  
        retf  
        .ENDP 
 
.PUBLIC F_SP_WriteSRAM 
F_SP_WriteSRAM: 
        push r1,r3 to [sp] 
         
         
        pop r1,r3 from [sp] 
        retf  
 
         
 
//=============================================================        
// End of sram.asm 
//=============================================================