General Purpose Timer
| Address | Size | Description |
|---|---|---|
base+0x00 | byte | Storing 1 triggers the GPT device to start reading the current system time. The register is set to 0 when the reading is completed. |
base+0x04 | word | Stores the time (in milliseconds) at the moment of the last reading by the GPT. |
base+0x08 | word | Storing v > 0 programs the GPT to generate an external interruption after v milliseconds. It also sets this register to 0 after v milliseconds (immediately before generating the interruption). |