mirror of
https://github.com/alfishe/amiga-bootcamp.git
synced 2026-06-13 00:26:28 +00:00
21751c0025
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.
55 lines
1.7 KiB
Markdown
55 lines
1.7 KiB
Markdown
[← Home](../README.md) · [Boot Sequence](README.md)
|
|
|
|
# Early Startup Control — Boot Options
|
|
|
|
## Overview
|
|
|
|
The **Early Startup Control** (ESC) menu appears when both mouse buttons are held during power-on or reset. It provides boot device selection, display mode override, and emergency recovery options.
|
|
|
|
---
|
|
|
|
## Activation
|
|
|
|
- **Both mouse buttons held** before the boot screen hand animation completes
|
|
- On A1200: hold both buttons during "floppy click" phase
|
|
- Requires Kickstart 2.0+ (not available on 1.3)
|
|
|
|
---
|
|
|
|
## Menu Options (OS 3.1)
|
|
|
|
```
|
|
┌──────────────────────────────────┐
|
|
│ EARLY STARTUP CONTROL │
|
|
│ │
|
|
│ Boot With No Startup-Sequence │
|
|
│ Boot Standard │
|
|
│ │
|
|
│ Boot Device: │
|
|
│ DF0: (pri 5) │
|
|
│ DH0: (pri 0) │
|
|
│ │
|
|
│ Display Mode: │
|
|
│ ● PAL ○ NTSC │
|
|
│ │
|
|
│ [BOOT] │
|
|
└──────────────────────────────────┘
|
|
```
|
|
|
|
---
|
|
|
|
## Recovery Scenarios
|
|
|
|
| Scenario | Fix |
|
|
|---|---|
|
|
| Corrupted Startup-Sequence | Boot with No Startup-Sequence, then `ED S:Startup-Sequence` |
|
|
| Wrong display mode (no image) | Hold both buttons → change PAL/NTSC |
|
|
| Boot from floppy instead of HD | Select DF0: as boot device |
|
|
| Assign loops / infinite boot | No Startup-Sequence → fix assigns manually |
|
|
|
|
---
|
|
|
|
## References
|
|
|
|
- RKRM: Early Startup chapter
|
|
- OS 3.1 AmigaGuide: `System/BootMenu`
|