Values for IOCTL category code |
| Value | Description |
|---|---|
|
00h |
unknown (DOS 3.3+) |
|
01h |
COMn: (DOS 3.3+) |
|
02h |
reserved for terminal control |
|
03h |
CON (DOS 3.3+) |
|
04h |
reserved for keyboard control |
|
05h |
LPTn: |
|
07h |
mouse control (European MS-DOS 4.0) |
|
08h |
reserved for disk control -- same as for block devices (see INT 21/AX=440Dh) |
|
9Eh |
Media Access Control driver (STARLITE) |
|
00h - 7Fh |
reserved for Microsoft |
|
80h - FFh |
reserved for OEM/user-defined |
|
See Also: |