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37 lines
762 B
Markdown
37 lines
762 B
Markdown
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[← Home](../README.md) · [Devices](README.md)
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# parallel.device — Centronics Parallel Port
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## Overview
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`parallel.device` provides I/O for the Amiga's Centronics-compatible parallel port, used primarily for printers.
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---
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## Opening
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```c
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struct IOExtPar *par = (struct IOExtPar *)
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CreateIORequest(port, sizeof(struct IOExtPar));
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OpenDevice("parallel.device", 0, (struct IORequest *)par, 0);
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```
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---
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## Commands
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| Code | Constant | Description |
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|---|---|---|
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| 2 | `CMD_READ` | Read bytes (if bidirectional) |
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| 3 | `CMD_WRITE` | Write bytes |
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| 5 | `CMD_CLEAR` | Clear buffers |
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| 8 | `CMD_FLUSH` | Abort pending |
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| 9 | `PDCMD_QUERY` | Get status |
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| 10 | `PDCMD_SETPARAMS` | Set parameters |
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---
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## References
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- NDK39: `devices/parallel.h`
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