https://github.com/jblang/bbcbasic-z80

R.T. Russell's BBC BASIC for Z80, with additional features by J.B. Langston
https://github.com/jblang/bbcbasic-z80

basic bbc-basic cpm programming-language rc2014 tms9918 tms9918a z80

Last synced: about 2 months ago
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R.T. Russell's BBC BASIC for Z80, with additional features by J.B. Langston

• Host: GitHub
• URL: https://github.com/jblang/bbcbasic-z80
• Owner: jblang
• License: zlib
• Created: 2020-02-08T04:23:52.000Z (almost 5 years ago)
• Default Branch: master
• Last Pushed: 2024-06-21T22:58:06.000Z (7 months ago)
• Last Synced: 2024-06-22T13:40:49.048Z (6 months ago)
• Topics: basic, bbc-basic, cpm, programming-language, rc2014, tms9918, tms9918a, z80
• Language: Assembly
• Homepage: http://www.rtrussell.co.uk/bbcbasic/z80basic.html
• Size: 24.4 KB
• Stars: 42
• Watchers: 12
• Forks: 15
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: COPYING

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README

        
# BBC BASIC+ for Z80

This is modified source code based on [BBC BASIC (Z80)](http://www.bbcbasic.co.uk/bbcbasic/z80basic.html) by R.T. Russell, who [kindly agreed](http://cowlark.com/2019-06-14-bbcbasic-opensource/index.html) to release the original sources under the [zlib](COPYING) license at the request of David Given.  David published the sources as part of his [cpmish](https://github.com/davidgiven/cpmish) project.

The original sources released by R.T. Russell are in the initial commit.  I have made the following modifications:

- Modified sources to assemble with [z88dk](https://github.com/z88dk/z88dk)'s z80asm

- Fixed a [bug](https://github.com/davidgiven/cpmish/issues/20) that causes the RUN command to hang under emulators.

- Moved hardware-specific functions from patch.asm to hardware.asm.

- Implemented CLS, TAB, and COLOUR using ANSI escape codes

- Added a Makefile and this README

Planned modifications:

- Graphics support for the TMS9918A video chip for use with my [video card](https://github.com/jblang/TMS9918A/) for the RC2014.

- Sound support for my SN76489 sound card and/or Ed Brindley's YM2149 sound card

- Joystick support for my Game Controller board supporting ColecoVision, Sega, and Atari controllers.

- Back port additional functionality from modern BBC BASIC.

## Build Instructions

Download and install [z88dk](https://github.com/z88dk/z88dk) (compile if necessary). Make sure z88dk's `bin` directory containing `z80asm` is in your path.

Run `make` to build bbcbasic.com.

If make is not available, run:

```

z80asm -obbcbasic.com -b -d -l -m main.asm exec.asm eval.asm fpp.asm hardware.asm cpm.asm ram.asm

```