Denial

srowe wrote: ↑Wed Nov 24, 2021 1:47 pm There are some example programs in the VIC-20 Listings collection

http://www.vic20listings.freeolamail.co ... ic_jp.html

Thank you, I'll take a look and study some the listings to learn the syntax of the additional commands.

armypavarmy wrote: ↑Wed Nov 24, 2021 11:03 am Vic 20 Graphic- Program.zip

Hello
see if it can be useful to you
I wrote this summary.
greetings Armando

Thank you very much, Armando. That's very useful indeed.

Thank you for your prompt reply. @MysticSword: that prg file is in fact the binary dump of the Vic-1211m, and you can use it with VICE x20 by attaching the prg as a cartridge at $a000 and then reset the emulated Vic. You will also need some expansion memory, say 8k or more, in order to write and run...

Hello, recently I stumbled upon this cartridge which is slightly different from the one that was sold in Europe and USA, I guess. In particular, I am interested in the additional commands for getting hires graphic screen and plotting and drawing lines. I've found the manual for the Vic-1211a but the...

Very nice fpga box, I own one of those as well and it's fascinating how it is able to reproduce so many systems, computers, consoles and arcades. The Vic core is quite good and I hope that by the time I'm writing the tape loading modification has been received and implemented by the core developers....

DarwinNE wrote: ↑Sun May 10, 2020 1:02 pm Complimenti! Lodevole iniziativa!

Grazie, siete tutti invitati a collaborare.
---> https://retrolips.boards.net

Ciao orion70, ti scrivo due righe sulla tua iniziativa di raccogliere e pubblicare i listati di PaperSoft. Faccio parte della redazione di RetroMagazine, una rivista dedicata al retrocomputing/retrogaming tutta italiana. Abbiamo 22 numeri all'attivo e la scorsa settimana abbiamo pubblicato il primo ...

I played a bit with MINIGRAFIK and found it amazing. And it's so fast if compared to bare BASIC commands. I think I'm going to write a review for the next issue of RetroMagazine, an Italian free online magazine dedicated to retrocomputing and retrogaming. I've already read the thread about MINIGRAFI...

Thank you Mike, for all the explanations here. I did try MINIGRAFIK last year and found it great, now I'll definitely have a second go, and get some fun out of it.

It works with POKE56,16. But that's a bit confusing to me. The unexpanded VIC-20 should use: Total memory: $1000 - $1fff (4096-8191) Screen memory: $1e00 - $1fff (7680-8191) Basic memory: $1000 - $1dff (4096-7679) -> 3583 bytes free The +3K Vic-20 should use: Total memory: $0400 - $1fff (1024-8191) ...

Many thanks, srowe, for your help. I'll try and modify the code in order to make it more readable and a bit faster.
In VICE/XVic I'm using Warp Mode so speed isn't really a problem. But on a real Vic-20... then I'll try to port everything on MINIGRAFIK.

Ok, mistery solved - a friend of mine who originally gave me the listings of the book, now sent me the correct pages of the Vic-20 programs. In this D64 file, you can find the correct full code: https://1drv.ms/u/s!AlIzYwFc-VDvhMwELm7COvKhb56wvA?e=jJMKag It requires a +3KB expansion to run. Last thi...

The code runs fine with 3K if you fix line 1160. Yes, this morning I've found out that the +3K expansion is the one that works fine with this listing. Yet the functions plotting is not correct and not continuous. You mention the line 1160: 1160 W=RR+I*288+J*16+K 1170 POKE W, PEEK(W) OR 2^(7-L) What...

A quick overview tells me the two programs are not supposed to run on an unexpanded VIC-20. At least a +3K RAM expansion is required. With +8K RAM or more, it is necessary to move the start of BASIC upwards to 8192, with: POKE44,32:POKE8192,0:NEW - there's a check inside the two programs for this. ...

Thanks for your reply. Did you see the crash screen? Maybe it's some values of the selected function that go over the limits, maybe it's a computing error. I can't say. While running I can see the hi-res screen cleaning and then I expect the function to be plotted for the X range (-0.1 and 0.1, to f...