Denial

Thanks for the great suggestions. I've learned a lot.

I wrote this program that sits in the cassette buffer and prints the current BASIC pointer addresses. It's pretty fun, load it and then do NEW to reset SOV. Do: SYS828 Then to see pointers move: 10 A=1 RUN SYS828 I know it wouldn't be any use if you had to load from tape. My question is in the "...

I like it but it confuses me, I feel like I'm moving the empty space instead of the tiles, am I doing it wrong?

Kind of rude of me to post a couple of questions on this fantastic forum without having even introduced myself. So here is my story if you have a couple of minutes and care to read it. Here's how it went. I was a teenager in the late '70s. A rural, bored Oklahoma boy. I stared at ads for the Commodo...

That's awesome. I should have thought of counting the cycles.

I wrote the following program to initialize RAM in the "user basic area", just for the fun of it. It runs really fast, like almost instantly. I know VICE tries to simulate speed of processor cycles. I don't have a real VIC up and running well enough yet to try this. Is the 6502 really that...

Thanks for all the zero page info guys, extremely helpful.

Thanks a bunch! I had a little trouble with a dasm error: line 12 code/ex2.asm Value Undefined IF error 1 mismatch nxt_line 1007(r ) pc: 100b line 16 code/ex2.asm Label Mismatch But I'm a dasm noob, too. Anyway I hardcoded it up and it works great. By looking at my assembled file and a small BASIC f...

I'm on a Mac. Tried this on a few recent versions of VICE (2.3, 2.4). In unexpanded vic mode, if I try to load at $1001 it won't run. If I go into the monitor and: r pc=1001 step ...my program isn't there. If I load at $1201 everything works fine. I haven't been able to try it on a real machine yet....

Yeah using $0-$3 was dumb. I'm surprised those 4 bytes of zero page ($fb-$fe) is all we really get but I did find a memory map that also says that. Can you use more if you autostart a cart? I don't plan to use basic at all.

bpl: brilliant!

Hi all. I'm just learning assembly, having fun with 6502 since my first computer ever was a VIC 20. I would appreciate comments on my code. It prints a blue "A" in the upper left corner of the screen. It should work on expanded/unexpanded vic. I'm using dasm/VICE on a mac. I invoke this wi...