WIC64 development in C

Hi, I´m a software dev, mostly on the Sinclair scene, but done some minor contributions also on the Commodore scene.

I have now aquired a nice WIC64 from Konstantin and I wish to start developing for it, but I´m having a hard time finding examples or actual guides for how to talk to the WIN64. The only information I find is in ASM and that´s slim at best.

Does anyone have any information on how to code for WIC64 in C ? Examples or actual code perhaps ?

Quote from schorsch3000

There is documentation in the Please login to see this link. on how to use the lib.

Sure that's in assembler since that whats used most often for the C64, but you should be able to use the lib from your C-Project using inline asm, maybe you need wrapper calls for the macros, but that depends on how well your c-suite handles inline asm.

Yes, this is the code I´ve found, but not very well knowledgeable in 6502/6510 asm. Maybe there´s a chance anyone can make a useable C wrapper for the asm lib ?

Quote from schorsch3000

While i'm capable in 6502 asm and also good enough in C to do some things for the C64, providing the magic glue to bring everything together is way out of my knowledge

Matbe someone else has the knowledge and time to help out here ? I´d be eternally grateful

Quote from LazyJones

SM7I maybe you can have a look into the XC-Basic lib - Here you can see the logic of the communication between C64 and the module in BASIC Language - so it should be easy to understand how this works.

Also the video I mentioned shows the handling of Vice in case of programming and testing WIC64 applications on a PC - it also shows how to start logging of communication between C64 and the Module...

The video also shows how to handle the most used commands of the module

maybe some interesting informations.

Thanks you very much. Wathing your video as well now. The only problem for me would be to convert this into C code as I can´t use your library as is unfortunately.

Quote from Endurion

I've never used C on the C64, but isn't the WiC64 interface mostly writing to or reading from the CIA register(s)? Do you have a setup with a C compiler for 6510?

Yes, I have several cross compiler environments. CC65 is one of them. I do *alot* of C coding, but unfortunately ASM 6502/6510 is not one of my strongest sides

Quote from 1570

The XC library seems quite simple: Please login to see this link. - porting that to C should be straightforward

I am going to give it a try, but calling it "straight forward" is kind of over exaggerating....

Quote from LazyJones

Quote from 1570

The XC library seems quite simple

... it is done by me, so it can't be complex

I do have some issues with the inline assembler parts.....

Quote from 1570

What parts exactly?

E.g.,

Code

     LDA $dd02
	 ORA #$04
	 STA $dd02
	 LDA $dd00
	 ORA #$04 
	 STA $dd00
	 LDA #$ff 
	 STA $dd03
	 lda $dd0d

...is really just...

Code

poke $dd02, peek($dd02) or 4
poke $dd00, peek($dd00) or 4
poke $dd03, 255
a=peek($dd0d):rem clear cia flag

Well, I´m quite puzzled as it does not seem so complicated, but for some reason it cannot get any response from the WIC64. First of all, are these addresses correct ?

PRA = $dd00 ; Port A
PRB = $dd01 ; Port B (data)
DDRA = $dd02 ; Direction A
DDRB = $dd03 ; Direction B
ICR = $dd0d ; Interrupt control/status