Category : C Source Code
Archive   : C-FDC.ZIP
Filename : SRDPB.C

 
Output of file : SRDPB.C contained in archive : C-FDC.ZIP
/* get & restore disk parameter blocks
*
*/

#include
#include "fdc.h"

struct dpb dsk_p_blk[MAXDRIVES]; /* disk parameter block for a: & b */

static int org_dpb_offset, org_dpb_segment;

int setdbp() /* sets DISK_POINTER to our dpbs */
{ /* return # of drives with dpbs (1 or 2) */

int i;
char *p;

org_dpb_offset = peek(DSK_PTR_SEG, DSK_PTR_OFF); /* get dpb offset */
org_dpb_segment = peek(DSK_PTR_SEG, DSK_PTR_OFF + 2); /* get dpb segment */

p = dsk_p_blk;
for(i = 0; i < (sizeof(struct dpb) * MAXDRIVES); ++org_dpb_offset)
*p++ = peek(org_dpb_segment, org_dpb_offset);
poke(DSK_PTR_SEG, DSK_PTR_OFF, getds());
poke(DSK_PTR_SEG, DSK_PTR_OFF + 2, dsk_p_blk);
return(dsk_p_blk[0].first);

}

int restoredpb() /* restores DISK_POINTER to original dbps */
{
poke(DSK_PTR_SEG, DSK_PTR_OFF, org_dpb_offset);
poke(DSK_PTR_SEG, DSK_PTR_OFF + 2, org_dpb_segment);
}







  3 Responses to “Category : C Source Code
Archive   : C-FDC.ZIP
Filename : SRDPB.C
”

  1. Daniel says:
    January 27, 2013 at 3:59 pm

    Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. Joshie says:
    March 18, 2014 at 4:57 pm

    This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. DiskingRound says:
    January 14, 2015 at 10:57 pm

    But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: http://www.os2museum.com/wp/mtswslnk/