April 28, 2006 using functions defined in C header files | ||||
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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]); } } |
April 28, 2006 Re: using functions defined in C header files | ||||
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Posted in reply to llee | On Fri, 28 Apr 2006 03:31:47 +0000 (UTC), llee 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]); } > > } This is the "D" newsgroup and not used for "C" problems. Maybe you should repost this to the C++ newsgroup. -- Derek (skype: derek.j.parnell) Melbourne, Australia "Down with mediocracy!" 28/04/2006 1:45:00 PM |
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