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neilsf / XC-BASIC

A compiling BASIC dialect for the Commodore-64
https://xc-basic.net/
MIT License
74 stars 15 forks source link

Port to Commodore 128 in C128 mode #92

Open odflor opened 4 years ago

odflor commented 4 years ago

Are there plans to make it work on Commodore 128 in C128 mode?

It Is hard to make it work?

Best Regards

neilsf commented 4 years ago

Hi Well first I must admit that I don't know the C128 very well.. Targeting the compiler to other platforms is currently on the way and we're working on the C Puls/4 and VIC-20 targets. Adding other targets should be relatively easy. I think the bottleneck is the assembler backend, which is DASM in our case. We can only target those CPU's that DASM supports. What CPU is ticking in the C128 when in C128 mode? Forgive me for the dumb question ;-)

odflor commented 4 years ago

Hi: The c64 and the c128 does not vary very much. The processor it uses is 8502, that is complete compatible with the 6502, only it can run at 2mhz. 1mhz default.The memory mapping of c128 vary some but not too much, because it have 128k of ram and can be expanded to 2mb, and the rom it have is larger. But on the basis much of the programs can run on a c128 with some patches.

neilsf commented 4 years ago

Okay, so far it seems doable but requires quite a lot of research from my side. Are you interested in contributing to the project? Either with your advises or with actually porting the runtime library to the C128. It's a pretty small library, less than 1K currently. Thanks

odflor commented 4 years ago

Yes!I want to collaborate in whatever i can. I have full c128 documentation available. And I know some of programming. Maybe I can help with something. I'm not strong on assembler but I will do that I can.

neilsf commented 4 years ago

That's great! Things we can start with:

Many thanks

odflor commented 4 years ago 
* Join our Slack channel where we can discuss all the details. Here's the public link: https://join.slack.com/t/xcbasic/shared_invite/enQtODM1NjI3MTE0MDM1LTZlOTg5NmU5OWVkM2ZkZjE4OTU4MjgyM2U0MWUxMzhmZGYwMDlhOWQyYTY5MTYxMzI3ZDQ3MzgzNzA5YzFhODU

Slack message: This invite link is no longer active.

I think something is wrong on the slack link.

neilsf commented 4 years ago

It just expired. Here's the new one: https://join.slack.com/t/xcbasic/shared_invite/enQtODcyNTUwODk4MTE0LWZkNzEzZTRjMTA3ODA3MTVjNTY0NDIwMjFjZjJmNzdmNjNlMWNiNDljNTNhOTI1ODhjYzNhMTlkNDJiNGFiOGI