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ioscan.c

Go to the documentation of this file.

/* scan i/o space looking for possible opennings */

/*
  Modification history:
  11/16/95 - Szabo created
  */

#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <stdlib.h>
#include "pcioDrv.h"

#define MSG_LEN 40
#define PAGE_SIZE 20            /* number of lines printed / page */
#define LINE_SIZE 8
static int pagesize = PAGE_SIZE;
static int linesize = LINE_SIZE;
static int line;


void menu()
{
  printf("\n");
  printf("#   - prints page starting at i/o address #\n");
  printf("p # - sets lines/page of i/o scan to #, default is 1 line/page\n");
  printf("    - blank line prints next page\n");
  printf("^C  - get out of ioscan\n");
  printf("\n");
}

void printpage(int value)
{
  int i,j;
  for(i=value;i<value+(pagesize*linesize);i+=linesize)
  {
    printf("> %x : ", i);
    for(j=i;j<i+linesize;j++)
    {
      printf("%2x ", inputb(j));
      /*printf("%x ", j);*/
    }
    printf("\n");
  }
  line = i;
}


int main(int argc, char *argv[])
{
  char cmd[MSG_LEN];

  if(1 < argc)
  {
    sscanf(argv[1],"%x",&pagesize);
    printf("You have changed the page size to %x\n",pagesize);
  }

  signal( SIGINT, exit );

  menu();

  while (1)
  {
    printf("io> ");
    fgets(cmd, MSG_LEN, stdin);

    if('h' == *cmd)
    {
      menu();
    }
    else if('p' == *cmd)
    {
      printf("Current page size is %d\n", pagesize);
      printf("Enter new page size in decimal ");
      printf("\n");

      fgets(cmd, MSG_LEN, stdin);
      if (1 != sscanf(cmd,"%d",&pagesize))
      {
        printf("try again\n\n");
        return;
      }

      printf("New page size is %x\n", pagesize);

    }
    else if('\n' == *cmd)
      printpage(line);
    else
    { /* assume it is a number, then print page starting at the number */
      if (1 != sscanf(cmd,"%x",&line))
      {
        printf("try again\n\n");
        return;
      }
      printpage(line);
    }
  }
}

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