Search found 37 matches
- Tue Oct 08, 2019 9:51 am
- Forum: General Topics
- Topic: VIC 20 multi-load tape software?
- Replies: 7
- Views: 3881
Re: VIC 20 multi-load tape software?
LOAD within a program is only used for program-chaining and leaves the variable-pointers untouched (AFAIK). This way you can have a large-program that loads smaller programs by itself and keeps the variables intact. Yes, this is what the manual says happens. The new program is loaded at the start o...
- Mon Oct 07, 2019 12:00 pm
- Forum: General Topics
- Topic: VIC 20 multi-load tape software?
- Replies: 7
- Views: 3881
Re: VIC 20 multi-load tape software?
If you're talking about BASIC, why would you need to use the keyboard buffer? Why not just include a LOAD command?
- Fri Apr 05, 2019 11:37 am
- Forum: Programming
- Topic: Random Noise Generator
- Replies: 5
- Views: 3675
Re: Random Noise Generator
Or even more noise:
Code: Select all
10 POKE 36878,15
20 POKE 36874+RND(0)*4,128+RND(0)*128
30 GOTO 20
40 FOR I=36874 TO 36878
50 POKE I,0
60 NEXT
- Fri Apr 05, 2019 11:32 am
- Forum: Programming
- Topic: Random Noise Generator
- Replies: 5
- Views: 3675
Re: Random Noise Generator
You just want random white noise?
When you're done listening, press STOP then RUN 40 to make the noise go away.
36877 is the white noise register (values 128–255), and 36878 is the volume (values 0–15).
Code: Select all
10 POKE 36878,15
20 POKE 36877,RND(0)*128+128
30 GOTO 20
40 POKE 36878,0
50 POKE 36877,0
36877 is the white noise register (values 128–255), and 36878 is the volume (values 0–15).
- Thu Apr 04, 2019 8:45 am
- Forum: Games
- Topic: Mines20: a PUR-80 BASIC 10-liner
- Replies: 2
- Views: 3211
Re: Mines20: a PUR-80 BASIC 10-liner
In the BASIC listing, what does this mean: {119*3}
- Fri Mar 01, 2019 10:28 am
- Forum: General Topics
- Topic: Is 32k expansion common among VIC-20 enthusiasts?
- Replies: 22
- Views: 11998
Re: Is 32k expansion common among VIC-20 enthusiasts?
I don't do a lot on my physical VIC-20, but when I do I run unexpanded. I've never owned any memory expansion. But I did buy a disk drive a few years ago, and I tend to break up programs into multiple parts and store the unused parts on disk. Then again, I don't really write any games that need to d...
- Mon Feb 11, 2019 9:02 am
- Forum: Programming
- Topic: Screen POKE - Help
- Replies: 8
- Views: 6323
Re: Screen POKE - Help
The color IS set! It just happens to be set to the same color as the screen background.
- Sat Feb 09, 2019 1:54 pm
- Forum: Programming
- Topic: Screen POKE - Help
- Replies: 8
- Views: 6323
Re: Screen POKE - Help
And if you're sure you're going to be poking characters all over the screen, you can just set the character color in every screen location to whatever you want ahead of time, and poke in characters later. For example, you can start with FOR I=38400 TO 38905: POKE I,0: NEXT to prepare every space for...
- Wed Jan 09, 2019 12:29 pm
- Forum: Programming
- Topic: The IF statement....
- Replies: 35
- Views: 19173
Re: The IF statement....
Even if you can slightly improve program speed by converting IF statements to expression evaluations, you more than lose that benefit due to difficulty in modifying — or understanding — your code later.
- Wed Jan 09, 2019 9:02 am
- Forum: Collecting and History
- Topic: What colour is the VIC-20 case originally before yellowing?
- Replies: 23
- Views: 13934
Re: What colour is the VIC-20 case originally before yellowing?
I'm not a fan of '70s aesthetics myself — all that brown and gold makes things look shabby to me, like they couldn't afford decent colors. Not that I'm blaming the VIC of looking shabby; in something as minimalist in design as the VIC, it looks just fine. It's friendlier than the corporate grey of t...
- Tue Jan 08, 2019 8:39 am
- Forum: Collecting and History
- Topic: What colour is the VIC-20 case originally before yellowing?
- Replies: 23
- Views: 13934
Re: What colour is the VIC-20 case originally before yellowing?
I'm not sure what the difference between those whites is, but my VIC-20 case is a sort of extremely light beige, just a shade away from white. The perception of the color is a bit influenced by the dark brown keys, the tan function keys, and the gold labels near the top. Very '70s in aesthetic.
- Thu Aug 30, 2018 11:52 am
- Forum: Programming
- Topic: Adding 0.1 + 0.2 in CBM float
- Replies: 13
- Views: 10510
Re: Adding 0.1 + 0.2 in CBM float
A good deal of programs just do arithmetics and are unlikely to be affected by those issues. Basically, unless you are writing a decimal calculator, you're simply going to want to use the imperfect calculation to perform some purpose other than displaying the sum on the screen in numerical format. ...
- Wed Aug 01, 2018 7:23 am
- Forum: Games
- Topic: Looking for a game with balloons
- Replies: 11
- Views: 7486
Re: Looking for a game with balloons
Gah! Why isn't the player protecting his cities?!prowlr wrote:Could it be 'The Catch'? Not quite how you draw it but there are a lot of similarities with what you have described.
https://www.youtube.com/watch?v=2-m0JOGrDGc
- Mon Apr 16, 2018 3:01 pm
- Forum: Collecting and History
- Topic: 2.5 million VICs sold - really?
- Replies: 6
- Views: 8123
Re: 2.5 million VICs sold - really?
Considering how many you can still find on the second-hand market, this number seems quite plausible to me.
- Mon Mar 26, 2018 12:38 pm
- Forum: Hardware and Tech
- Topic: VIC-20 and key repeat function ??
- Replies: 6
- Views: 3816
Re: VIC-20 and key repeat function ??
The cursor keys probably repeat by default as well.repetto74 wrote:Actually the keystroke repeat works for the spacebar only for both C64 and VIC .