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Comprehensive technical documentation covering: - Hardware: OCS/ECS/AGA custom chip registers, Copper & Blitter deep dives - Boot sequence: cold boot through startup-sequence - Binary format: HUNK executable spec, relocation, debug info - Linking & ABI: .fd files, LVO tables, register calling conventions - Exec kernel: tasks, interrupts, memory, signals, semaphores - AmigaDOS: file I/O, FFS/OFS layout, CLI/Shell scripting - Graphics: planar bitmaps, Copper programming, HAM/EHB modes - Intuition: screens, windows, IDCMP, BOOPSI - Devices: trackdisk, SCSI, serial, timer, audio, keyboard - Libraries: utility, expansion, IFFParse, locale, ARexx - Networking: bsdsocket API, SANA-II, TCP/IP stack comparison - Toolchain: GCC, vasm/vlink, SAS/C, NDK, debugging - Reverse engineering: IDA/Ghidra setup, compiler fingerprints, case studies - CPU & MMU: 68040/060 emulation libs, PMMU, cache management - Driver development: SANA-II, Picasso96/RTG, AHI audio All files include breadcrumb navigation. No local paths or proprietary content.
36 lines
762 B
Markdown
36 lines
762 B
Markdown
[← 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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| 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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