isa.c

void __irq Uart0_TxInt(void) void __irq Uart0_RxIntOrErr(void) void __irq Uart0_TxDmaDone(void)

#include "includes.h"
void eFunctionEnter(void)
{ISA_EFER=0x87;
 ISA_EFER=0x87;//连续写两次
 //ISA_EFER_ADD=0x87;
 //ISA_EFER_ADD=0x87;
}
void SelectDev(unsigned char DevNum)
{
  //eFunctionEnter();
  *(volatile unsigned char *)(ISA_BASE+ISA_EFER_ADD+0x07)=DevNum;
  //ISA_EFER=0x07;
 
 
}
unsigned char ISA_ReadId(void)
{ //=0x20;
 //ISA_EFDR
  return (ISA_ID);
}

void WriteIsa(unsigned char addr,unsigned char tData)
{//*(volatile unsigned char *)(ISA_EFER+addr)=tData;
ISA_EFER=addr;
ISA_EFDR=tData;	
}

unsigned char ReadIsa(unsigned char addr)
{unsigned char xx;
ISA_EFER=addr;

return (ISA_EFDR);//ISA_EFER_ADD
 
//ISA_EFER=addr;
//return (ISA_EFDR);	
}