backbit-tool
v1.3.4
Published
The BackBit Tool is a fully open source cross-platform JavaScript application that creates .BBT files for use with the BackBit cartridge for Commodore 64.
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BackBit-Tool
The BackBit Tool is a fully open source cross-platform JavaScript application that creates .BBT files for use with the BackBit cartridge for Commodore 64.
The BBT file format offers the following innovations:
- Prepend SID music and title screen/screenshots
- Autostarts to any program
- Incorporates up to 8 disk images (D64/D71/D81/D8B)
- Supports up to 4GB of binary data
- Tags important details about the program, including text and screenshots
While this format is designed to integrate with the BackBit cartridge, it is likely that emulators will eventually support this format once there is enough demand.
For the latest compiled build, find it at http://backbit.io/downloads/Tool/.
To discuss working on this tool, go to the forum at http://forum.backbit.io.
The cartridge is available for purchase at http://store.backbit.io.
Comes built with an easy-to-use GUI for Windows (32 & 64-bit), OSX (64-bit), & Linux (32 & 64-bit):
Also usable with a command-line interface:
BackBitTool 1.2.3
Usage: BackBitTool <output.bbt> <input files...>
Supported input files include: PRG,CRT,D64,D71,D81,D8B,SID,KLA
Use any unsupported extension to add extended data
Command-Line Usage
You must install node & npm to build on your machine: https://nodejs.org/en/download/
To install COMMAND-LINE version:
npm i -g backbit-tool
To run COMMAND-LINE version once installed:
backbit-tool
Development
To setup for development (first time only):
git clone https://github.com/evietron/BackBit-Tool.git
cd BackBit-Tool
npm i
npm run dev
To execute in DEBUG mode:
npm start
To compile PRODUCTION builds for all platforms (outputs to the build folder):
NOTE: On Windows, you have to run cmd.exe as Administrator to compile for OSX
npm run deploy
To execute PRODUCTION build:
npm run prod-win32
, ornpm run prod-win64
, ornpm run prod-osx
To install PRODUCTION build in your Applications folder on Mac OSX:
npm run app-osx
BBT File Format
This is a (somewhat) human readable format when viewed in a hex editor with a column width of 16 bytes.
All fields begin on 16-byte offsets.
See details here: https://github.com/evietron/BackBit-Tool/blob/master/src/bbt.js
D8B File Format
This is a new format, similar to other disk formats but with capacity for about 8 regular disks and directory entires to match.
| Format | Tracks | Sectors | Dir Entries | Dir Track | BAM Sector# | Dir Sector# | BAM bytes/trk | Blocks Avail | Capacity vs D64 | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | D64 | 35 | 17-21 | 144 | 18 | 0 | 1-18 | 4 | 664 | 1x | | D71 | 70 | 17-21 | 144 | 18/53 | 0 | 1-18 | 4 | 1328 | 2x | | D81 | 80 | 40 | 296 | 40 | 1-2 | 3-39 | 6 | 3160 | 4.8x | | D8B | 40 | 136 | 1056 | 1 | 1-3 | 4-135 | 18 | 5304 | 8x |