I wrote the following application, and it uses the function _bios_disk that is defined in the bios.h file. I imported the file, but I get the following error message during compilation:

"
diskread02.obj(diskread02)
Error 42: Symbol Undefined _bios_disk

--- errorlevel 1
"
This has been a repeating problem for me so ANY help would be appreciated.

#include <bios.h>
#include <stdio.h>
#include <stdlib.h>

void main ()
{
// declarations:
int			i;
int			result;
static char		dbuf[512];

struct diskinfo_t
{
int drive;		// drive number for c:
int head;
int track;
int sector;
int nsectors;
void* buffer;
};
struct diskinfo_t diskinfo;
diskinfo.drive 	= 2;
diskinfo.head	= 0;
diskinfo.track	= 0;
diskinfo.sector	= 1;
diskinfo.nsectors	= 1;
diskinfo.buffer	= dbuf;

// operations:
printf ("attempting to read from drive c:\n");

result = _bios_disk (2, &diskinfo);

if ((result & 0xff00) == 0)
{	printf ("disk read from c: successful.\n");	}
else
{	printf ("disk read operation failed. \n");	}

for (i = 0; i <= 512; i ++)
{	printf ("0x%02x ", dbuf[i]);	}

}

I am guessing that you are trying to compile the file for 95/NT.
Compile it and target DOS.



newbie wrote:
> I wrote the following application, and it uses the function _bios_disk that is
> defined in the bios.h file. I imported the file, but I get the following error
> message during compilation: 
> 
> "
> diskread02.obj(diskread02)
> Error 42: Symbol Undefined _bios_disk
> 
> --- errorlevel 1
> "
> This has been a repeating problem for me so ANY help would be appreciated.
> 
> #include <bios.h>
> #include <stdio.h>
> #include <stdlib.h>
> 
> void main ()
> {
> // declarations:
> int			i;
> int			result;
> static char		dbuf[512];
> 
> struct diskinfo_t {
> int drive;		// drive number for c:
> int head;
> int track;
> int sector;
> int nsectors;
> void* buffer;
> };
> struct diskinfo_t diskinfo;
> diskinfo.drive 	= 2;
> diskinfo.head	= 0;
> diskinfo.track	= 0;
> diskinfo.sector	= 1;
> diskinfo.nsectors	= 1;
> diskinfo.buffer	= dbuf;
> 
> // operations:
> printf ("attempting to read from drive c:\n");
> 
> result = _bios_disk (2, &diskinfo);
> 
> if ((result & 0xff00) == 0)
> {	printf ("disk read from c: successful.\n");	}
> else {	printf ("disk read operation failed. \n");	}
> 
> for (i = 0; i <= 512; i ++)
> {	printf ("0x%02x ", dbuf[i]);	}
> 
> }
> 
> 
> 

-- 
ManiaC++
Jan Knepper

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