[WIP] Implement complete rewrite of repository for PIP-OS

[Copilot]

PIP-OS Implementation Plan

Complete rewrite of UOS to implement PIP-OS (Personal Information Processor Operating System v7.1.0.8) for Pip-Boy devices according to the development plan.

Implementation Checklist

Phase 1: Core Boot System

• Update README and documentation to reflect PIP-OS
• Implement matrix-style boot display animation
• Add boot audio sequence (tones and effects)
• Update memory layout for PIP-OS architecture
• Implement basic ROM detection

Phase 2: Hardware Abstraction Layer

• Display drivers (SPI TFT support)
• Input handling (buttons + rotary encoder)
• Basic sensor support (RTC, battery monitor)
• Power management basics
• Timer and GPIO drivers

Phase 3: ROM Loading System

• ROM header parsing
• Chainloading mechanism
• System call interface
• Memory protection
• Deitrix ROM loader

Phase 4: Services Implementation

• Vector graphics engine
• Audio synthesis system
• Advanced sensor support
• Input service with dial processing
• Display service with effects

Phase 5: Holotape Support

• Holotape detection
• Runtime environment
• Sandboxing
• Save system

Phase 6: Polish and Testing

• Build system updates
• Complete documentation
• Testing and validation
• Performance optimization

This is a comprehensive rewrite that transforms the terminal-based UOS into a Pip-Boy OS with authentic Fallout game series features.

Original prompt

Based on the following development plan, make a PR with the complete rewrite of this repository the implement PIP-OS (from Fallout video games serie).

You can also get help from others repos we develop previously:

• RETROS-BIOS (BIOS for terminals, main bootloader): https://github.com/RobCo-Industries/RETROS-BIOS
• MFBootAgent (second stage bootloader for RETROS-BIOS): https://github.com/RobCo-Industries/MFBootAgent
• UOS (terminal OS, loaded after MFBootAgent): https://github.com/RobCo-Industries/UOS

---

PIP-OS Development Plan

Personal Information Processor Operating System v7.1.0.8

RobCo Industries Pip-Boy System Software for ARM Architecture

Executive Summary

PIP-OS is the foundational operating system for all Pip-Boy devices, responsible for hardware initialization, ROM loading, and providing core services to the Deitrix ROM or holotape applications. This implementation targets ARM processors (BCM2835/2836/2837) for wearable Pip-Boy replicas with authentic boot sequences and full functionality.

Version Information

• Current Version: PIP-OS V7.1.0.8
• Copyright: 2075 RobCo Ind.
• Loader Version: LOADER V1.1
• EXEC Version: 41.10
• Target Platform: ARM Cortex-A series (Raspberry Pi Zero/2/3/4)

---

1. System Architecture

1.1 Core Components

Boot Loader Layer

• Primary Loader: Initial hardware setup and display initialization
• Matrix Display: Random character cascade during boot
• Audio System: Boot sequence sound generation
• Hardware Detection: Identify Pip-Boy model and peripherals
• ROM Selector: Choose between Deitrix ROM and holotape

Kernel Layer

• Memory Manager: 64KB RAM management with 38,911 bytes free after init
• Process Scheduler: Cooperative multitasking for ROM applications
• Device Manager: Hardware abstraction for sensors and peripherals
• Interrupt Controller: ARM interrupt handling for real-time events
• Power Management: Battery monitoring and power saving modes

Service Layer

• Display Service: Vector graphics rendering engine
• Input Service: Button, dial, and touch input processing
• Audio Service: Sound synthesis and playback
• Sensor Service: Unified interface for all sensors
• Storage Service: Holotape and ROM access

User Space Interface

• ROM Loader: Deitrix chainloading mechanism
• Holotape Runtime: Direct holotape execution environment
• System Call Interface: Clean API for ROM/holotape programs
• Memory Map: Protected regions for safe application execution

1.2 Boot Sequence Flow

Power On → Matrix Display → Hardware Check → Memory Init → ROM/Holotape Detection → Load Deitrix/Holotape → Transfer Control

1.3 Memory Layout

0x00000000 - 0x00000FFF : Exception Vectors (4KB)
0x00001000 - 0x00007FFF : PIP-OS Kernel (28KB)
0x00008000 - 0x0000FFFF : System Services (32KB)
0x00010000 - 0x0001FFFF : ROM Space (Deitrix) (64KB)
0x00020000 - 0x0002FFFF : Application Space (64KB)
0x00030000 - 0x0003FFFF : Graphics Buffer (64KB)
0x00040000 - [RAM_END]  : User Space

---

2. Boot Sequence Implementation

2.1 Matrix-Style Startup Display

• Character Set: Mix of alphanumeric and special characters
• Animation Pattern:
  • Vertical cascading (Matrix-like)
  • Random character changes
  • Gradual fade effect
  • Duration: 3-5 seconds
• Color Scheme: Green phosphor with varying intensities
• Resolution: Adapts to display (minimum 320x240)

2.2 Audio Sequence

• Boot Sound Profile:
  • Initial power-on beep (440Hz, 200ms)
  • Data stream noise (white noise modulated)
  • Mechanical relay clicks
  • Final ready chime (C-E-G chord)
• Audio Output: PWM through GPIO or I2S DAC
• Volume Control: Hardware-dependent

2.3 Boot Messages

LOADER V1.1
EXEC VERSION 41.10
64K RAM SYSTEM
38911 BYTES FREE
NO HOLOTAPE FOUND
LOAD ROM(1): DEITRIX 303

---

3. Hardware Abstraction Layer

3.1 Display Support

• Primary Displays:
  • SPI TFT (ILI9341, ST7789) - 320x240 minimum
  • HDMI output for development
  • Composite video for authentic CRT displays
• Display Modes:
  • Vector graphics mode (lines and points)
  • Bitmap mode (for images)
  • Text mode (terminal fallback)
• Refresh Rate: 30 FPS minimum, 60 FPS target

3.2 Input Devices

• Physical Controls:
  • Rotary encoder for dial navigation
  • 5 minimum buttons (up, down, left, right, select)
  • Optional: Touch overlay support
• GPIO Mapping: Configurable per hardware variant
• Debouncing: Hardware and software debouncing

3.3 Sensor Integration

• Required Sensors:
  • Real-time clock (RTC)
  • Battery voltage monitor
• Optional Sensors:
  • Geiger counter (radiation detection)
  • GPS module (location tracking)
  • Accelerometer (motion detection)
  • Temperature sensor
  • Heart rate monitor (biometric seal simulation)
• Sensor Interface: I2C/SPI with automatic detection

3.4 Aud...

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.