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Ilia Sharin 21751c0025 docs(amiga): complete AmigaOS 3.1/3.2 developer reference — 172 files across 17 sections

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.

2026-04-23 12:17:35 -04:00

762 B

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← Home · Devices

parallel.device — Centronics Parallel Port

Overview

parallel.device provides I/O for the Amiga's Centronics-compatible parallel port, used primarily for printers.

Opening

struct IOExtPar *par = (struct IOExtPar *)
    CreateIORequest(port, sizeof(struct IOExtPar));
OpenDevice("parallel.device", 0, (struct IORequest *)par, 0);

Commands

Code	Constant	Description
2	`CMD_READ`	Read bytes (if bidirectional)
3	`CMD_WRITE`	Write bytes
5	`CMD_CLEAR`	Clear buffers
8	`CMD_FLUSH`	Abort pending
9	`PDCMD_QUERY`	Get status
10	`PDCMD_SETPARAMS`	Set parameters

References

NDK39: devices/parallel.h

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