2 * DOS interrupt 26h handler
12 #include "debugtools.h"
14 DEFAULT_DEBUG_CHANNEL(int)
16 /**********************************************************************
19 * Handler for int 26h (absolute disk read).
21 void WINAPI INT_Int26Handler( CONTEXT86 *context )
23 BYTE *dataptr = CTX_SEG_OFF_TO_LIN( context, DS_reg(context), EBX_reg(context) );
26 if (!DRIVE_IsValid(AL_reg(context)))
29 AX_reg(context) = 0x0201; /* unknown unit */
33 if (CX_reg(context) == 0xffff)
35 begin = *(DWORD *)dataptr;
36 length = *(WORD *)(dataptr + 4);
37 dataptr = (BYTE *)CTX_SEG_OFF_TO_LIN( context,
38 *(WORD *)(dataptr + 8), *(DWORD *)(dataptr + 6) );
42 begin = DX_reg(context);
43 length = CX_reg(context);
46 TRACE("int26: abs diskwrite, drive %d, sector %ld, "
47 "count %ld, buffer %p\n",
48 AL_reg(context), begin, length, dataptr );
50 DRIVE_RawWrite(AL_reg(context), begin, length, dataptr, TRUE);