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.

07_dos/pattern_matching.md

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+[← Home](../README.md) · [AmigaDOS](README.md)
+
+# Pattern Matching — ParsePattern, MatchPattern
+
+## Overview
+
+AmigaDOS provides built-in wildcard/pattern matching for file operations. Patterns are compiled into token streams via `ParsePattern` and matched via `MatchPattern`.
+
+---
+
+## Wildcard Syntax
+
+| Pattern | Meaning | Example |
+|---|---|---|
+| `?` | Match exactly one character | `file?.txt` matches `file1.txt` |
+| `#` | Match zero or more of the following | `#?.info` matches anything ending in `.info` |
+| `#?` | Match any string (equivalent to `*`) | `#?` matches everything |
+| `(a\|b)` | Alternation — match a or b | `(read\|write)` |
+| `~` | Negation — match if NOT | `~(#?.info)` matches non-info files |
+| `[abc]` | Character class | `[abc]` matches a, b, or c |
+| `[a-z]` | Character range | `[0-9]` matches digits |
+| `'` | Quote next character literally | `'#` matches literal `#` |
+
+---
+
+## API
+
+```c
+/* dos/dos.h — NDK39 */
+
+/* Compile a pattern into tokenised form: */
+LONG ParsePattern(STRPTR pat, STRPTR buf, LONG buflen);
+/* Returns: 1 = pattern has wildcards, 0 = plain string, -1 = error */
+
+/* Test a name against a compiled pattern: */
+BOOL MatchPattern(STRPTR pat_compiled, STRPTR name);
+
+/* Case-insensitive variants: */
+LONG ParsePatternNoCase(STRPTR pat, STRPTR buf, LONG buflen);
+BOOL MatchPatternNoCase(STRPTR pat_compiled, STRPTR name);
+```
+
+---
+
+## Usage Example
+
+```c
+char pat[256], buf[256];
+LONG is_wild;
+
+is_wild = ParsePatternNoCase("#?.txt", pat, sizeof(pat));
+if (is_wild >= 0) {
+    if (MatchPatternNoCase(pat, "readme.txt"))
+        Printf("Match!\n");
+    if (!MatchPatternNoCase(pat, "readme.doc"))
+        Printf("No match\n");
+}
+```
+
+---
+
+## Common Patterns
+
+| Pattern | Matches |
+|---|---|
+| `#?` | Everything (wildcard all) |
+| `#?.info` | All `.info` icon files |
+| `~(#?.info)` | Everything except `.info` files |
+| `(#?.c\|#?.h)` | All C source and header files |
+| `file[0-9]` | `file0` through `file9` |
+
+---
+
+## References
+
+- NDK39: `dos/dos.h`
+- ADCD 2.1: `ParsePattern`, `MatchPattern`