|
| |
DOS INTERNAL SERVICES - IOCTL Interface
|
Input |
DOS1 |
N |
DOS3 |
N |
DOS4 |
Y |
DOS5 |
Y |
Output |
|
AX |
12h |
2Bh |
Bytes
/ Status / Value / Error |
AX |
|
BX |
File
Handle / Drive Code |
|
|
BX |
|
CX |
Number
of Bytes to Read/Write |
|
|
CX |
|
DX |
Device
Information (01h) |
Device
Information (00h) |
DX |
|
BP |
IOCTL
Code (as per call 44h) |
Set
if Error |
CF |
| DS:DX |
Buffer
Area (02h-05h) |
|
|
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