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FINDTSRS.C
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C/C++ Source or Header
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1992-04-19
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1KB
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49 lines
/************************************************************************/
/* */
/* FINDTSRS.C Find all TSRs with signatures matching a given name */
/* Public Domain 1992 Ralf Brown */
/* Version 0.80 */
/* Last Edit: 4/19/92 */
/* */
/* Must be compiled in a large data model (compact recommended) */
/* ex. TCC -mc -c FINDTSRS.C */
/* */
/************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dos.h>
/************************************************************************/
int find_TSRs(char *mpx_numbers,char *manuf,char *name)
{
int found = 0 ;
int mpx, len1, len2 ;
char far *sig ;
union REGS regs ;
/**/
/* loop through all 256 multiplex numbers, remembering each match we find */
/**/
for (mpx = 0 ; mpx <= 255 ; mpx++)
{
regs.h.ah = mpx ;
regs.h.al = 0 ; /* installation check */
int86(0x2D,®s,®s) ;
if (regs.h.al == 0xFF) /* installed? */
{
sig = MK_FP(regs.x.dx,regs.x.di) ;
if (manuf)
len1 = min(strlen(manuf),8) ;
len2 = min(strlen(name),8) ;
if ((manuf == NULL || (strnicmp(manuf,sig,len1) == 0)) &&
strnicmp(name,sig+8,len2) == 0)
mpx_numbers[found++] = mpx ;
}
}
return found ;
}