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eslapion
ultimate expander
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Post by eslapion »

d0c wrote:...frogger was released last year, everyone loved it. so why not berzerk this year...
I am still waiting for a version that looks fine on an NTSC VIC!! :cry:
Be normal.
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d0c
Vic 20 Devotee
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Joined: Wed May 03, 2006 5:21 pm

Post by d0c »

orion70 wrote:I totally agree with d0c: please, a "philologically correct" version of Bezerk would be just wonderful! :D
that speech can be made with the trick they used in that popular vic20 "robot" demo... :wink:
1983 vic20 & 3k-16k ram expansion....
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nippur72
de Lagash
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Post by nippur72 »

talking of Shamus, at the end of the ROM cartdrige image I found this message from the author:
WHAT A HORRIBLE MESS!THIS PROGRAM HAS GREAT AMOUNTS OF WASTED ROM SPACE...
NOTE TO PROSPECTIVE SOFTWARE PIRATES: THIS PROGRAM WAS WRITTEN
BY TOM GRINER 777-36 SAN ANTONIO RD. PALO ALTO CALIFORNIA...I WOULD LOOSE MONEY IF
YOU DISTRIBUTE STOLEN COPIES OF THIS PROGRAM...SO, RATHER THAN STEAL THIS,
WRITE ME A LETTER AND I WILL SEND YOU SOME FREE SOFTWARE... THIS MAY SOUND SILLY,
BUT I WOULD REALLY HATE TO HAVE PEOPLE STEALING MY PROGRAMS...
BY THE WAY: IT IS ILLEGAL TO COPY THIS PROGRAM ....................
THIS SPACE FOR RENT......HELP, I AM TRAPPED IN A VIC-20 CARTRIDGE...
it was encoded in ASCII rather than PETSCII as one would expect.
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Boray
Musical Smurf
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Post by Boray »

nippur72 wrote:talking of Shamus, at the end of the ROM cartdrige image I found this message from the author:
:D Cool
PRG Starter - a VICE helper / Vic Software (Boray Gammon, SD2IEC music player, Vic Disk Menu, Tribbles, Mega Omega, How Many 8K etc.)
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eslapion
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Post by eslapion »

nippur72 wrote:talking of Shamus, at the end of the ROM cartdrige image I found this message from the author:
Yeah, I saw this message when I compiled the ROM images for the Behr Bonz cart. Found it pretty amusing.

I can tell you there are a couple of other VIC carts with messages like that in them and not all of them are at the end.

I'll leave you all the fun of finding them. :wink:
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Jeff-20
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Post by Jeff-20 »

That's awesome!
High Scores, Links, and Jeff's Basic Games page.
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Kweepa
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Post by Kweepa »

What a waste! Just imagine what could have gone in there... extra levels, enemies, music... or maybe some code to prevent the enemies bunching up quite so much when a room starts!
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carlsson
Class of '6502
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Post by carlsson »

Probably Tom was in a short of time.
Anders Carlsson

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nippur72
de Lagash
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Post by nippur72 »

I'm amazed by Shamus ability to show so many sprites (even if 8x8) at the same time. Their number seems to increase dinamically because the game slows down when there are too many of them. I'm tempted to disassemble it.
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carlsson
Class of '6502
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Post by carlsson »

Oh by the way, the other week I won an auction for a CCI Magazine VIC-20 tape which contains a number of games and programs. One of them is a sprite routine. I'll make a TAP and upload it whenever possible, although I'm certain that sprite routine may already have been preserved.
Anders Carlsson

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Victragic
Frogger '07
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Post by Victragic »

eslapion wrote:
d0c wrote:...frogger was released last year, everyone loved it. so why not berzerk this year...
I am still waiting for a version that looks fine on an NTSC VIC!! :cry:
Duly noted..
3^4 is 81.0000001
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Kweepa
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Post by Kweepa »

nippur72 wrote:I'm amazed by Shamus ability to show so many sprites (even if 8x8) at the same time. Their number seems to increase dinamically because the game slows down when there are too many of them. I'm tempted to disassemble it.
He's XORing the characters to the screen and cycling through the characters to update their sprite frame and/or move them. It is impressive that he can update 16 (or more?) enemies plus a player and 6 bullets fast enough to make a playable game! I think the sprites must be stored pre-shifted in RAM.
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d0c
Vic 20 Devotee
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Post by d0c »

@nippur72

are you working on berzerk or not :?:
1983 vic20 & 3k-16k ram expansion....
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nippur72
de Lagash
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Post by nippur72 »

d0c wrote:@nippur72: are you working on berzerk or not :?:
not actually, but I'm playing it in mame just to make an idea of it...

BTW, the original graphics wastes a large amount of ram (sprites are 8x16 and have all positions encoded) so expansion 8K expansion memory would be a minimum if ported for the vic.
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d0c
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Post by d0c »

8k shouldnt be a problem, its when you go over the magic 16k you should worry :wink:

if it makes thing easier here is the full source, for a complete clone of berzerk written in c for the atari lynx which uses a 6502...

http://jum.pdroms.de/lynx/lynxprog.html
1983 vic20 & 3k-16k ram expansion....
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