B-System (BTRON3 3.20 HMI) for Synrc VE OS.1

A cleanroom recreation of the B-System (Business TRON / TRON OS Architecture for personal computers) specification and retro desktop environment. Designed using standard C99, rendering through SDL2, and organized into a authentic Japanese BTRON tree structure.

TRON Trace Distribution uCode: https://trace.tron.org/tk/00001C00000000000000000000070066

Specifications B-system is based on

• BTRON3 SPEC 3.20
• B-Free OS 1994
• B-System 2026
• TRON HMI
• T-Kernel 2.0

NOTE: I can't include TRON HMI TAD book to build as it is copyright protected. You need to ask PMC to give me non-commercial permission to Ukrainian translation (that's only language I ask, but anyway you'll have pictures).

Components

• seL4 support for Synrc VE OS.1
• ITRON
• VirtIO
• AArch32
• POSIX
• TIP
• HMI
• TAD
• CAB
• EDIT
• TERM
• HTML to TAD Converter
• GIF
• PNG
• Space Casette HMI Sample
• Own MOZC !!!
• UTF-8 / TRON Code
• Four Books Included in TAD format (BTRON3 3.20 Spec, T-Kernel, B-Free, B-System)
• XMPP Chat (Namdak Tonpa 2010, 30KB)
• C99 Compiler (Fabrice Bellard?)
• IDE (Legacy IDE)
• HTML 4.1 Browser (NetSurf based)
• LibreSSL 3.1.5
• Erlang (Joe Armstrong)
• MinCaml (Eijiro Sumii)
• GStreamer
• TURN Server
• ProcessOne XMPP Server
• WebRTC RTP MCU Video Conferencing
• Be Editor (https://be.5ht.co)
• Sokhatsky Commander (https://sc.5ht.co)
• Terminal Editor (https://tv.5ht.co)
• POSIX Shell (https://sh.5ht.co)

Japanese BTRON Lineage & Subsystem Layout

btron/
├── Makefile                    # Plain BSD/BeOS/TRON style Makefile
├── README.md                   # Cleanroom architecture & BTRON spec documentation
├── include/                    # Authentic Japanese BTRON Header Tree
│   └── btron/
│       ├── btron.h             # Master include header
│       ├── types.h             # Fundamental TRON types (W, H, B, UW, ID, ER, etc.)
│       ├── error.h             # TRON error codes (E_OK, E_SYS, E_NOMEM, E_PAR, etc.)
│       ├── itron.h             # μITRON Real-Time Kernel Primitives
│       ├── dp.h                # Display Primitives (Graphics engine)
│       ├── wnd.h               # Sakamura Window Manager APIs
│       ├── event.h             # BTRON System Event Queue
│       ├── vobj.h              # Real Body / Virtual Body Hyper-Data Model Engine
│       ├── troncode.h          # TRON Multilingual Character Code & Font Engine
│       └── desktop.h           # Desktop Shell & Panel Manager APIs
├── src/                        # Core Subsystems Implementation
│   ├── kernel/                 # μITRON Task & Synchronization Subsystem
│   ├── graphics/               # Display Primitives (DP) Vector & Raster Graphics
│   ├── window/                 # Sakamura BTRON Window Manager & Event Dispatcher
│   ├── vobject/                # Real Body / Virtual Body Hyper-Data Engine
│   ├── font/                   # TRON Character Code & Pixel Font Renderer
│   └── desktop/                # Cho-Kanji / BTRON Desktop Compositor & Main Launcher
└── apps/                       # Authentic BTRON Accessories
    ├── vobj_manager.c          # Real Body Cabinet & Virtual Body Explorer Window
    ├── t_editor.c              # TRON Text Editor (Editor) Window
    └── gterm.c                 # BTRON Terminal Shell (GTerm) Window

Raspberry Pi 2/3 T-Kernel 2.0 Yokobayashi

$ make kernel
$ make run-kernel

QEMU VirtIO T-Kernel 2.0 Sakamura

$ make sakamura
$ ./btron-sakamura.elf

QEMU VirtIO Tokita

$ make qemu
$ make run-qemu

POSIX Takada

$ make posix
$ make run-posix

Features

1. True Japanese BTRON API Header Hierarchy:

   • Includes <btron/btron.h>, <btron/types.h>, <btron/itron.h>, <btron/dp.h>, <btron/vobj.h>, <btron/wnd.h>, <btron/event.h>, and <btron/troncode.h>.
   • Native TRON type definitions: W, H, B, UW, UH, UB, VW, ID, ER, RECT, PNT, PAT, COLOR.
   • Real-time kernel primitives: cre_tsk, sta_tsk, slp_tsk, wup_tsk, cre_sem, wai_sem, sig_sem.

2. Real Body / Virtual Body Hyper-Data Model Engine (vobj):

   • Implements Sakamura's legendary hyper-data object engine where documents contain live embedded pointers (Virtual Bodys) to Real Bodys stored in disk cabinets.

3. Sakamura Cho-Kanji Retro Desktop & Window Manager:

   • Classic Sakamura teal desktop workspace with top status panel, clock, desktop cabinet launcher, and window z-ordering.
   • Double-bordered retro window frames with titlebars, close buttons, window dragging, and focus.

4. BTRON Accessories:

   • gterm: BTRON Terminal Console window.
   • t_editor: TRON Text Editor with Virtual Body icon embedding.
   • vobj_manager: Real Body Cabinet & Virtual Body Link Explorer.

Building & Running

In the spirit of NetBSD, BeOS, and TRON, compilation requires only a plain BSD Makefile:

$ make sakamura
$ ./btron-sakamura.elf
B-System/BTRON3 3.20 (sakamura-tkernel-virtio) Ken Sakamura — T-Kernel 2.0
Copyright 2026 Synrc Research Center. MIT License.
[BOOT] Host: Darwin 25.5.0 arm64
[CORE] Sakamura T-Kernel 2.0 Engine  BTRON_SAKAMURA
[T-KERNEL] All Sakamura T-Kernel 2.0 subsystems initialized.
[VIRTIO] MMIO Controller registered at address 0x10001000
[MEM ] T-Kernel hosted: memory managed by host OS allocator
[HFDS] POSIX file I/O: host filesystem passthrough  [OK]
[HFDS] HFDS Hierarchical File/Data Set: INIT  [OK]
[TRACE-COCOA] Activated nswin=0x9b15b0280 contentView=0x9b17a8500
[B-System] Launching Sakamura B-System Desktop & Accessories...

Credits

• Namdak Tonpa and Grok 4.5