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Updated following issue #101

Josh 2018-01-04 11:09:00 +11:00
parent e963f7bd4b
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Hardware:-Universal-Com-Port.md

@ -2,7 +2,7 @@ The Universal Communication Port, or Com Port for short enables communication be
### Specifications
Manufacturer: Apachicorp
Version: 1.1b
Version: 1.1c
Default address: `0x000D`
Hardware ID: `0x000D`
@ -10,10 +10,11 @@ Hardware ID: `0x000D`
### Interrupt Behavior
| Value of A | Action | Energy cost | Result |
| --- | --- | --- | --- |
| `0` | `COMPORT_SELF_CLEAR` | `0 kJ` | Clears the console screen and the internal message buffer. |
| `0` | `COMPORT_BUFFER_CLEAR` | `0 kJ` | Clears the internal message buffer. |
| `1` | `COMPORT_POLL` | `4 kJ` | Copy all internal buffer messages to memory at X, sets B to the number of messages copied |
| `2` | `COMPORT_FRONT_PORT_OUT` | `20 kJ` | Copies 8 words starting from the address in X to the object directly in front of the cubot if this object has a Universal Com Port as well. The B register is set if the operation succeeded, it is reset otherwise |
| `3` | `COMPORT_SELF_OUT` | `1 kJ` | Copies 8 words starting from the address in X to the internal message buffer. The B register is set if the operation succeeded, it is reset otherwise |
| `4` | `COMPORT_CONSOLE_CLEAR` | `0 kJ` | Clears the console. |
Note that a Cubot can send a message to another Cubot's internal buffer, which will be emptied into his console screen. Currently, the [Radio Tower](https://github.com/simon987/Much-Assembly-Required/wiki/Radio-Tower) is the only other object with a Com Port.