A friend recommended that I should point out there is a fairly extensive wiki on dflat.
So after reading this, please have a look through the wiki to really get a feel for this language targeted at constrained 8-bit machinees.
https://github.com/6502Nerd/dflat/wiki
dflat is a BASIC-like language for 8-bit micros and retro computers running on 6502 and 65c02. Key features & highlights;
- Procedure orientated structure (all runnable code within def..enddef blocks)
- Local variables - supports recursion
- Structured programming including if..elif..endif, while..wend, repeat..until
- Line numbers only used for sequencing lines, but cannot be referenced - no goto or gosub!
- Support for sound and graphics
- Inline assembler that can access dflat variables and vice-versa
- Fits in to 16KB ROM (including all low-level BIOS)
- Core language can be ported easily - just needs character put and get routines for input/output
Here is hello world in dflat:
10 def_hello()20 println "Hello world!"30 enddef_hello()[immediately invokes the procedure called _hello]
The base version here is targeted for the Oric-1 and Atmos computers from the early 80s and due to being integer only and tokenisation, is much faster than Oric BASIC.
Right now I am in refinement and documentation mode. Please see the wiki pages for details of the language.
The source and binaries are in the Oric-DFLAT folder - the readme provides a quickstart guide to try dflat rather wihtout building it from scratch.
I also have a hackaday page for this, although this repo will always have the latest code; https://hackaday.io/project/175585-oric-1-dflat-system
Also on hackaday, I have my homebrew computer made on breadboard and housed in a BBC Micro case. I made dflat for this computer first, then ported to the Oric for hopefully a slightly wider user base! https://hackaday.io/project/5789-65c02-homebrew-computer-on-breadboard