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.

11_libraries/keymap.md

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+[← Home](../README.md) · [Libraries](README.md)
+
+# keymap.library — Keyboard Mapping
+
+## Overview
+
+`keymap.library` translates raw keycodes from `keyboard.device` into character codes using the active keymap. Each keymap defines the mapping from physical keys to characters, including dead keys and string sequences.
+
+---
+
+## Key Functions
+
+```c
+/* Map a raw keycode + qualifiers to ASCII: */
+LONG actual = MapRawKey(&inputEvent, buffer, bufsize, NULL);
+/* Returns number of characters, -1 if buffer too small */
+
+/* Map ANSI code back to raw key: */
+WORD MapANSI(STRPTR string, WORD count,
+             STRPTR buffer, WORD length,
+             struct KeyMap *keyMap);
+```
+
+---
+
+## struct KeyMap
+
+```c
+/* devices/keymap.h — NDK39 */
+struct KeyMap {
+    UBYTE *km_LoKeyMapTypes;    /* type array for keys 0x00–0x3F */
+    ULONG *km_LoKeyMap;         /* mapping array for keys 0x00–0x3F */
+    UBYTE *km_LoCapsable;       /* caps-lock bitmap */
+    UBYTE *km_LoRepeatable;     /* auto-repeat bitmap */
+    UBYTE *km_HiKeyMapTypes;    /* type array for keys 0x40–0x77 */
+    ULONG *km_HiKeyMap;
+    UBYTE *km_HiCapsable;
+    UBYTE *km_HiRepeatable;
+};
+```
+
+---
+
+## References
+
+- NDK39: `devices/keymap.h`, `libraries/keymap.h`