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.

12_networking/tcp_ip_stacks.md

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+[← Home](../README.md) · [Networking](README.md)
+
+# TCP/IP Stacks — AmiTCP, Miami, Roadshow
+
+## Overview
+
+AmigaOS has no built-in TCP/IP stack. Third-party stacks provide `bsdsocket.library`. All stacks present the same API to applications — only configuration and driver support differ.
+
+---
+
+## Stack Comparison
+
+| Feature | AmiTCP 3.0b2 | Miami 3.2 | Roadshow 1.15 |
+|---|---|---|---|
+| License | Free (Genesis fork) | Commercial | Commercial (demo available) |
+| API version | bsdsocket.library v3 | v4 | v4 |
+| IPv6 | No | No | No |
+| PPP | Via serial | Built-in | Via driver |
+| DHCP | External (dhclient) | Built-in | Built-in |
+| DNS cache | No | Yes | Yes |
+| SANA-II | Yes | Yes | Yes |
+| GUI config | MUI prefs | Miami prefs | Roadshow prefs |
+| Active development | No | No | Yes (Olaf Barthel) |
+| MiSTer recommended | ✅ (free) | — | ✅ (most capable) |
+
+---
+
+## Configuration (Roadshow)
+
+```
+; DEVS:NetInterfaces/prism2
+DEVICE=prism2.device
+UNIT=0
+IPTYPE=DHCP
+; or:
+; ADDRESS=192.168.1.100
+; NETMASK=255.255.255.0
+; GATEWAY=192.168.1.1
+
+; DEVS:NetInterfaces/lo0
+DEVICE=lo0.device
+UNIT=0
+ADDRESS=127.0.0.1
+NETMASK=255.0.0.0
+```
+
+---
+
+## Configuration (AmiTCP)
+
+```
+; AmiTCP:db/interfaces
+prism2 DEV=DEVS:Networks/prism2.device UNIT=0 IP=DHCP
+
+; AmiTCP:db/netdb-myhost
+HOST 127.0.0.1 localhost
+NAMESERVER 8.8.8.8
+DOMAIN local
+```
+
+---
+
+## References
+
+- Roadshow SDK: http://roadshow.apc-tcp.de/
+- AmiTCP SDK: Aminet `comm/tcp/AmiTCP-SDK-4.3.lha`