OKI M80C49 用什么编程器读程序

只看该作者 · 2012-4-12 23:02

本帖最后由 keen123456 于 2012-4-15 14:42 编辑

手上有几片M80C49的单片机想看里面的资料望赐教谢谢

只看该作者 · 2012-4-15 14:45

放个代码出来请砖家指点下

#include<stdio.h>
#include<sys/io.h>
#include<unistd.h>

#define BASE 0x378


#define wr(data) (data & 0xcf)
#define rd(data) (data | 0x20)
#define b1off(data) (data & 0xfe)
#define b1on(data) (data | 0x01)

unsigned char read_8049(int addr)
{

int data, j, a, b, max;
unsigned char tmp, code;
unsigned char buff[40];

/* we read a byte 40 times. why? because there are errors. the error
   rate is as high as 15% when I tested.  Inserting delays can lower
   the error rate, but won't eliminate it.  I removed artificial
   delays after implementing "the redundant read and vote" thing.
*/
for (j=0; j<40; j++)
{
      tmp = wr(inb(BASE+2)); // Write
      tmp = b1off(tmp);       // RESET off
      outb(tmp, BASE+2);
      outb((unsigned char)addr, BASE);  // ADDR
      // blink reset
      outb(b1on(inb(BASE+2)), BASE+2);
      outb(b1off(inb(BASE+2)), BASE+2);
      tmp = rd(inb(BASE+2)); // Read
      outb(tmp, BASE+2);
      buff[j] = inb(BASE+4);
}

/* find the most frequent one among 40 reads */
max=0;
for (j=0; j<40; j++)
{
      tmp = buff[j];
      a = 0;
      for (b=j; b<40; b++)
      {
         if(buff[b]==tmp) a++;
      }
      if(a > max)
      {
         code = tmp;
         max = a;
      }
}
return code;
}

int main()
{
int i;

/* initialize */
if (iopl(3)) return 1;

for(i=0; i <= 0xff; i++)
printf("%c", read_8049(i));
}

OKI M80C49 用什么编程器读程序

相关下载

相关帖子