|
| |
INT 21 - DOS 3.x - IOCTL - BLOCK DEVICE LOCAL
|
Input |
DOS1 |
N |
DOS2 |
N |
DOS3 |
Y |
DOS5 |
Y |
Output |
|
AX |
44h |
09h |
Error
Code |
AX |
|
BX |
|
Drive
(0=Def) |
|
|
BX |
|
CX |
|
|
|
|
CX |
|
DX |
|
|
Attribute
Word |
DX |
|
ES:DI |
|
Set
if Error |
CF |
Bit 12 of the Attribute indicates whether device is remote.
If bit 12 is ZERO indicating a local device, then:
| Local
Device: |
| Bit |
Dec |
Hex |
Description |
| 0 |
1 |
0001h |
Reserved |
| 1 |
2 |
0002h |
Uses 32 bit sector
addressing |
| 2 |
4 |
0004h |
Reserved |
| 3 |
8 |
0008h |
| 4 |
16 |
0010h |
| 5 |
32 |
0020h |
| 6 |
64 |
0040h |
Supports Func 44h/0Dh,
0Eh, 0Fh |
| 7 |
128 |
0080h |
Supports Func 44h/11h |
| 8 |
256 |
0100h |
Reserved |
| 9 |
512 |
0200h |
Local, but shared by
others |
| 10 |
1024 |
0400h |
Reserved |
| 11 |
2048 |
0800h |
Supports Func 44h/08h |
| 12 |
4096 |
1000h |
Reserved |
| 13 |
8192 |
2000h |
Requires Media
Descriptor in FAT |
| 14 |
16384 |
4000h |
Supports 44h/04h,
05h |
| 15 |
32768 |
8000h |
SUBST Drive |
|