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Forums > C64 Coding > 1541 Routines
2006-11-23 15:28
Codey

Registered: Oct 2005
Posts: 79
1541 Routines

What's the most impressive 1541 routines you've seen other than for loading? Some routines I recall are turning the led on and off in sync with the music, fading the led in and out, and bumping the head to play music from the drive (this had to contribute to many mis-aligned 1541s!)
 
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2022-05-08 15:09
Mojzesh

Registered: Jul 2006
Posts: 2
My two cents:

There is also my effect Textured Vectors in ES1RA:
ES1RA

And, my “Spiral bobs” and End Part “Twisted Vectors” in Biba 2:
Biba 2
2022-05-09 01:06
Quiss

Registered: Nov 2016
Posts: 30
Protogeo 100% last part, by Norvax.

Uses the drive to compute the (2D) coordinates of the eight SMGF cube corners (using a 16-bit truncated sine table with 65 entries), with perspective correction.

The division routine is a little peculiar. And the gap filling and line slope math really should have been done in the drive as well. But other than that, this is one of the most impressive 3D parts of all times.
2022-05-09 01:20
Groepaz

Registered: Dec 2001
Posts: 10370
But the music! <3
2022-05-10 14:22
Mr.Ice

Registered: Nov 2007
Posts: 13
Any demes that need more than one drive to calculate stuff?
2022-05-10 20:24
Copyfault

Registered: Dec 2001
Posts: 445
Quoting Mr.Ice
Any demes that need more than one drive to calculate stuff?
I think there was a fractal generator released by one of the german disk mags (Input64 or Magic Disk?) that could be configured to use more than one drive, but chances are high that my mind plays tricks on me and I just dreamt this...

Either way, it's not a demo!
2022-05-10 20:43
Krill

Registered: Apr 2002
Posts: 2325
Quoting Copyfault
I think there was a fractal generator
[...]
Either way, it's not a demo!
Pray tell, why is it not a demo? =)
2022-05-10 22:44
Copyfault

Registered: Dec 2001
Posts: 445
Quoting Krill
Quoting Copyfault
I think there was a fractal generator
[...]
Either way, it's not a demo!
Pray tell, why is it not a demo? =)
I keep my hands off the territory of definitions on csdb. Better leave it to the mods ;)
2022-05-10 23:15
Krill

Registered: Apr 2002
Posts: 2325
To quote a demo scener i keep in high regard:
"julia fractals are never nice (slow or fast)... they're ugly iterating blobs of nothingness, same goes for mandelbrots... It's debugging stuff for mathematicians, not eyecandy"

... and they serve no purpose, apart from showing "oh yeah, i can do that!" =)

So, if there's anything qualifying for "demo", it's fractal generators. =D
2022-05-11 12:39
Martin Piper

Registered: Nov 2007
Posts: 483
Quote: To quote a demo scener i keep in high regard:
"julia fractals are never nice (slow or fast)... they're ugly iterating blobs of nothingness, same goes for mandelbrots... It's debugging stuff for mathematicians, not eyecandy"

... and they serve no purpose, apart from showing "oh yeah, i can do that!" =)

So, if there's anything qualifying for "demo", it's fractal generators. =D


Umm yeah, a fractal routine, especially one that is novel and uses one or more 1541s, would definitely be a "demo".
2022-05-11 16:23
Mirage

Registered: Jan 2003
Posts: 113
Quote: To quote a demo scener i keep in high regard:
"julia fractals are never nice (slow or fast)... they're ugly iterating blobs of nothingness, same goes for mandelbrots... It's debugging stuff for mathematicians, not eyecandy"

... and they serve no purpose, apart from showing "oh yeah, i can do that!" =)

So, if there's anything qualifying for "demo", it's fractal generators. =D


They still are! :)
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