catch.c

QX44B0的BIOS源代码

#include "44b.h"

#include "catch.h"
// rSYSCFG    :   0x01C00000;
void Cache_Init()
{
	rSYSCFG = 0x0e;				//使用8K字节的指令缓存,write buffer disable		 
    //禁止 0x02000000 ~ 0x0BFFFFFF 进入cache
    rNCACHBE0 = ( 0x02000000 >> 12 ) | ( (0x0C000000 >> 12 ) << 16 );

}

void Cache_SetWriteBuf(unsigned char OnOff)
{
    if( OnOff == WBON )  rSYSCFG = rSYSCFG | 0x08;
    if( OnOff == WBOFF )  rSYSCFG = rSYSCFG & (~0x08);
}

void Cache_onoff(unsigned char OnOff)
{
    if( OnOff == WBON )  rSYSCFG = rSYSCFG | 0x06;
    if( OnOff == WBOFF )  rSYSCFG = rSYSCFG & (~0x06);
}