Search found 10 matches

by drvanthorp
Fri Dec 05, 2008 7:16 pm
Forum: General Topics
Topic: Significance of Brown VIC-20 Cases, with Eprom Boards?
Replies: 14
Views: 4489

Is it possible that Commodore had intended at one point to actually sell an EPROM burner with blank brown cartridges, then sold them burned and labeled when the burner was cancelled?
by drvanthorp
Sun Nov 30, 2008 6:06 pm
Forum: Emulation and Cross Development
Topic: Help improving the VIC20 palette in vice!
Replies: 26
Views: 15003

Somewhere I once saw a web site from a guy that had done oscilescope testing to produce a more accurate C-64 pallette. Same method should be aplicable to any composite-output machine.
by drvanthorp
Thu Oct 16, 2008 11:39 pm
Forum: General Topics
Topic: Vic-20 documentary.
Replies: 19
Views: 6850

Wow. Q-Bert on VIC20 was a piece of crap. Ayep, mostly due to colour clashes and limitations. That was partly one of the reasons why I made VIQ*Bert in c:a 2001-2002. It ain't pretty and has very low resolution graphics but at least it doesn't suffer from colour clashes. Perhaps one could come up w...
by drvanthorp
Sat Oct 11, 2008 2:29 pm
Forum: General Topics
Topic: i hate commodore oe vic20 joystike
Replies: 22
Views: 9718

Never liked a controller that made you use the left hand to control the direction. Some early arcade machines were set up like that, because the designers knew that right handed people would die quicker and spend more quarters if they were handicapped by the controller layout. Computers and consoles...
by drvanthorp
Sat Oct 11, 2008 2:03 pm
Forum: General Topics
Topic: Vic-20 documentary.
Replies: 19
Views: 6850

Wow. Q-Bert on VIC20 was a piece of crap. I remember seeing screen shots back in the day, but never actual video.

Did you ever have Snackman? This was a cassette-based Pac-Man clone that was really fast, and I liked it better than any of the official versions.
by drvanthorp
Sat Oct 11, 2008 1:55 pm
Forum: General Topics
Topic: Ancient School - new VIC20 demo!
Replies: 41
Views: 13563

I've always been told that the Atari 2600 and the Timex Sinclair generated the screen image via software control only. If that is the case, couldn't you do the same with the VIC-20? I would think you could just have the CPU control the general background color register and time it perfectly to gene...
by drvanthorp
Fri Oct 10, 2008 11:39 am
Forum: General Topics
Topic: Ancient School - new VIC20 demo!
Replies: 41
Views: 13563

You could use this technique in multi-color mode to change the background, border, and auxiliary colors on each line. Would it be possible to write to 22 bytes of color memory during the horizontal blanking interval? Rasterbars are not FLI. Altering the colour RAM on the fly doesn't work. A LDA/STA...
by drvanthorp
Fri Oct 10, 2008 1:23 am
Forum: Programming
Topic: Sound Effects
Replies: 21
Views: 8655

Gunshot is usually a loud short burst of white noise. An rapidly fading echo/reverb might make the gunshot sound more realistic.
by drvanthorp
Fri Oct 10, 2008 1:12 am
Forum: General Topics
Topic: Ancient School - new VIC20 demo!
Replies: 41
Views: 13563

FLI on the C64 creates additional "bad-lines" that stop the CPU. In that way, the VIC chip re-reads the attribute data from a different source, in thus enhances the colour-resolution, when using a hi-res screen (the text map defines two colour sources in that case). On the VIC-20, in effe...
by drvanthorp
Fri Oct 10, 2008 1:02 am
Forum: General Topics
Topic: Ancient School - new VIC20 demo!
Replies: 41
Views: 13563

Yes, i do not understand why a demo must be only for unexpanded vics, if someone made a good demo for 16k vics, which is the problem ? It might be an ethos from the early days of computing, when the geeks would talk up the capabilities of their favorite machine. The Apple II guys would always claim...