bootdsp.c

单片机C源程序souce

#include <SST89V564.H>
#include <ABSACC.H>

extern wdt(void);

extern BootDSP(void)
{
unsigned int i,ptr,ptr1;
unsigned char buffer;

wdt();
			//write the HPIA(the write address)
XBYTE[0xe4ff] = 0x00;	//The higher 8bit of address.
    					//HR/W=0;HCNT1=1;HCNT0=0;HBIL=0.
XBYTE[0xe5ff] = 0x7f;	//The lower 8bit of the address.
						//HR/W=0;HCNT1=1;HCNT0=0;HBIL=1.
//ptr = 0x2000;
ptr = 0x4000; //DSP的存储地址改为0x4000
ptr1= ptr+1;
for (i=0x0000;i<0x4f80;i++)	//Begin writing data to DSP.
  {
  buffer = CBYTE[ptr1];		//Higher 8bit data output.
  XBYTE[0xe2ff] = buffer;	//HR/W=0;HCNT1=0;HCNT0=1;HBIL=0.
  ptr1=ptr1+2;
  buffer = CBYTE[ptr];		//Lower 8bit data output.
  XBYTE[0xe3ff] = buffer;	//HR/W=0;HCNT1=0;HCNT0=1;HBIL=1.
  ptr=ptr+2;
  }
		//write the HPIA(the write address)
XBYTE[0xe4ff] = 0x00;	//The higher 8bit of address.
						//HR/W=0;HCNT1=1;HCNT0=0;HBIL=0.
XBYTE[0xe5ff] = 0x7e;	//The lower 8bit of the address.
						//HR/W=0;HCNT1=1;HCNT0=0;HBIL=1.
XBYTE[0xe2ff] = 0x00;	//Higher 8bit data output.
						//HR/W=0;HCNT1=0;HCNT0=1;HBIL=0.
XBYTE[0xe3ff] = 0x80;	//Lower 8bit data output.
						//HR/W=0;HCNT1=0;HCNT0=1;HBIL=1.
}