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.

10_devices/README.md

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+[← Home](../README.md)
+
+# Devices — Overview
+
+## Section Index
+
+| File | Description |
+|---|---|
+| [trackdisk.md](trackdisk.md) | trackdisk.device — floppy I/O |
+| [scsi.md](scsi.md) | scsi.device / 2nd.scsi.device — hard disk I/O |
+| [serial.md](serial.md) | serial.device — RS-232 |
+| [parallel.md](parallel.md) | parallel.device — Centronics |
+| [timer.md](timer.md) | timer.device — timing and delays |
+| [audio.md](audio.md) | audio.device — DMA audio channels |
+| [keyboard.md](keyboard.md) | keyboard.device — keyboard events |
+| [gameport.md](gameport.md) | gameport.device — joystick/mouse |
+| [input.md](input.md) | input.device — event merging |
+| [console.md](console.md) | console.device — text terminal I/O |