MiSTer FPGA Forum

Hi - complete c64 novice here.

I found that the line

10 PRINT CHR$(205.5+RND(1)); : GOTO 10 

supposedly gives a nice pattern when executed on the C64.

However, I get a syntax errror when I try it;

I boiled it down to RND(1) not working.

I'm running stock c64 after an update_all with biosses. The line at the top says commodore 64 basic V2, followed by dolphindos 2.0.

I also tried loading the 'standard' system rom, instead of the 'Loadable C64', but the result is the same. Quick internet search did not yield answers. Any clues, experts?

Works in Vice as well as MiSTer for me. Do make sure you get an actual + sign and don't mix up your ; and :. Those are tricky from my PC keyboard attached to the MiSTer and fudged up my first attempt.

...so you' re a Tweaker eh?

so you're a tweaker, eh

But: yeah, I think I typed everything correct;

So yeah, I'm a bit stumped. I don't believe I have any weird settings in mister's setup for the c64.

So, yeah, idk!

That's not the plus sign! It's the PET-ASCII sign for the cross.

Yup. Of course both of you were right, user error Thanks! It was the + that wasn't a plus. And I was surprized that excuting

print "Hello" 

worked as I expected, so when

rnd(1)

did not, I expected the syntax error to be due to my mister not being set up with the correct version of BASIC or something.

And just to clarify and prevent bans: Bas and I weren't calling eachother meth users - but referring to users of a Dutch tech website, tweakers.net

They reported on the passing of one of the inventors of BASIC, Thomas E. Kurtz. In the comments of the article, someone posted this oneliner, and I aimed to try it.