Aufgabe 2: Unterbrechungen
MouseDecoder Class Reference
Decoder for mouse codes received from the PS2Controller. More...
#include <machine/mousedecoder.h>
Collaboration diagram for MouseDecoder:Classes | |
| struct | MousePacket.__unnamed58__ |
Public Member Functions | |
| bool | decode (unsigned char code) |
| Decode the mouse packets. More... | |
Public Attributes | |
| Pointer | state |
| Current position and state of the mouse. | |
Detailed Description
Decoder for mouse codes received from the PS2Controller.
Extracts the mouse movements and button events.
Movements are reported with at least a 3-byte packet, depending on the extension (scroll wheel etc) sometimes more (but not handled here).
| Bit | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0 |
|---|---|---|---|---|---|---|---|---|
| Byte 1 | Y ovf | X ovf | Y sgn | X sgn | 1 | M btn | R btn | L btn |
| Byte 2 | X Movement | |||||||
| Byte 3 | Y Movement | |||||||
| Byte 4 | (ignored if present) | |||||||
- See also
- The PS/2 Mouse Interface
Member Function Documentation
| bool MouseDecoder::decode | ( | unsigned char | code | ) |
Decode the mouse packets.
- Parameters
-
code Byte from Keyboard to decode
- Returns
trueif a 3-byte-packet was successfully decoded.
- Optional:
- Implement method
The documentation for this class was generated from the following files:
- machine/mousedecoder.h
- machine/mousedecoder.cc