Note: This API call is for DOS and Win16 personality only. Use Family API for portability.
Int 21H, AH=44H
Input
AH=44H, AL=Subfunction
| Subfunction | Description | Version |
|---|---|---|
| 00 | GET DEVICE INFORMATION | 2.0+ |
| 01 | SET DEVICE INFORMATION | 2.0+ |
| 02 | READ FROM CHARACTER DEVICE CONTROL CHANNEL | 2.0+ |
| 03 | WRITE TO CHARACTER DEVICE CONTROL CHANNEL | 2.0+ |
| 04 | READ FROM BLOCK DEVICE CONTROL CHANNEL | 2.0+ |
| 05 | WRITE TO BLOCK DEVICE CONTROL CHANNEL | 2.0+ |
| 06 | GET INPUT STATUS | 2.0+ |
| 07 | GET OUTPUT STATUS | 2.0+ |
| 08 | CHECK IF BLOCK DEVICE REMOVABLE | 3.0+ |
| 09 | CHECK IF BLOCK DEVICE REMOTE | 3.1+ |
| 0A | CHECK IF HANDLE IS REMOTE | 3.1+ |
| 0B | SET SHARING RETRY COUNT | 3.1+ |
| 0C | GENERIC CHARACTER DEVICE REQUEST | 3.2+ |
| 0D | GENERIC BLOCK DEVICE REQUEST | 3.2+ |
| 0E | GET LOGICAL DRIVE MAP | 3.2+ |
| 0F | SET LOGICAL DRIVE MAP | 3.2+ |
| 10 | QUERY GENERIC IOCTL CAPABILITY (HANDLE) | 5.0+ |
| 11 | QUERY GENERIC IOCTL CAPABILITY (DRIVE) | 5.0+ |
| osFree Macro Library | |
|---|---|
| Video I/O | @SetMode @SetCurSz @SetCurPos @GetCur @SetPage @ScrollUp @ScrollDn @Scroll @GetChAtr @PutChAtr @PutCh @SetPalet @SetColor @SetDot @GetDot @WrtTTY @VideoState @GetMode @GetDisplay @GetVideoState @GetEGAInfo @Cls |
| Hardware info | @Equipment @MemSize |
| Serial I/O | @AuxInit @AuxSendChar @AuxRecieveChar @AuxStatus |
| Tape I/O | @TapeOn @TapeOff @TapeRead @TapeWrite |
| Keyboard I/O | @KbdStatus @CharIn @CharPeek |
| Printer I/O | @PrnPrint @PrnInit @PrnStatus |
| Disk I/O | @DskReset @DskStatus @DskRead @DskWrite @DskVerify @DskFormat |
| Date and Time | @SetTime @GetTime |
| Mouse | @MouInit @MouShowPointer @MouStatus @MouSetPos @MouSetMickey @MouRegion |
| Memory manager | @ModBlok SET_BLOCK |