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Forums > CSDb Discussions > 4k intro compo?
2019-10-28 13:53

Registered: Nov 2011
Posts: 389
4k intro compo?

I found myself coding quite a lot of small intros lately because many current releases to link them are rather small and we do not want to bloat them too much with a giant intro.

Anyone interested to join a challenge creating mini-intros? Different to the 4k category at demo parties 4k would not be the limit for the executable but for memory usage overall at one block. Rules would be similar to Event id #2757 : Intro Creation Competition 2018 just with a lower memory limit and without the requirement for music.
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2019-11-01 22:37

Registered: Aug 2006
Posts: 61
Yeah, why not, count me in
2019-11-01 23:01

Registered: Nov 2002
Posts: 967
If I use bank 0 and want to modify ghostbyte, do I have to place everything at $3000-$3fff?
2019-11-01 23:09

Registered: Jan 2005
Posts: 578
Nope, just store the ghostbyte and restore on 'exit'. At least that is how I read the rules.

This means RAM besides chosen $1000 bytes area and exceptions has to be the same before and after running the intro. What happens during runtime is up to you.
2019-11-01 23:13

Registered: Mar 2005
Posts: 365
Sounds like a fun challenge! But then not possible to use bitmaps? ...since there's no way to restore them xD @Compyx @Jammer
2019-11-01 23:15
Account closed

Registered: Dec 2001
Posts: 748
Quoting Jammer
If I use bank 0 and want to modify ghostbyte, do I have to place everything at $3000-$3fff?

The rules cover that RAM outside your chosen area "has to be the same before and after running the intro. What happens during runtime is up to you."
2019-11-01 23:16

Registered: Nov 2002
Posts: 967
@Digger: I didn't even dare to think about bitmap xD
2019-11-02 00:44

Registered: Jan 2005
Posts: 578
Restoring bitmaps shouldn't be too hard. The rules state anything outside the $1000 bytes should be restored. Which means you can include the $1000 bytes in the store/restore function, which should only be a few bytes of self-modifying code.

Edit: oh wait, whatever you store/read to/from also needs to be back to normal. Naybe write to disk/read back? Is that allowed?
2019-11-02 03:55

Registered: Aug 2004
Posts: 1078
Well, there's space for a third of a bitmap if your code and music are quite small...
2019-11-02 10:44

Registered: Jul 2003
Posts: 477
At least i have my own tiny sid player written for an unfinished 4k game. :)
2019-11-04 18:04

Registered: Nov 2011
Posts: 389
The heat is on:
Intro Creation Competition 2019

Go go go... :D
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