2 * DOS interrupt 26h handler
14 /**********************************************************************
17 * Handler for int 26h (absolute disk read).
19 void WINAPI INT_Int26Handler( CONTEXT *context )
21 BYTE *dataptr = PTR_SEG_OFF_TO_LIN( DS_reg(context), BX_reg(context) );
25 if (!DRIVE_IsValid(AL_reg(context)))
28 AX_reg(context) = 0x0101; /* unknown unit */
32 if (CX_reg(context) == 0xffff)
34 begin = *(DWORD *)dataptr;
35 length = *(WORD *)(dataptr + 4);
36 dataptr = (BYTE *)PTR_SEG_TO_LIN( *(SEGPTR *)(dataptr + 6) );
40 begin = DX_reg(context);
41 length = CX_reg(context);
44 TRACE(int,"int26: abs diskwrite, drive %d, sector %ld, "
45 "count %ld, buffer %d\n",
46 AL_reg(context), begin, length, (int) dataptr );
48 if ((fd = DRIVE_OpenDevice( AL_reg(context), O_WRONLY )) != -1)
50 lseek( fd, begin * 512, SEEK_SET );
51 /* FIXME: check errors */
52 write( fd, dataptr, length * 512 );