serpenti by fsqrt [web]
screenshot added by frag on 2012-01-04 23:11:08
platform :
type :
release date : january 2012
  • 26
  • 1
  • 0
popularity : 54%
  • 0.96
alltime top: #7864
added on the 2012-01-04 23:11:08 by frag frag

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Reminds me a screensaver.
added on the 2012-01-04 23:33:41 by BackSpace BackSpace
Wow, too good imagery for 32b.
rulez added on the 2012-01-05 00:27:30 by Optimus Optimus
rulez added on the 2012-01-05 03:25:55 by rudi rudi
rulez added on the 2012-01-05 03:56:31 by Skate Skate
A 32b that doesn't just draw straight lines/xor blobs, and is fast. Thumbs up.
rulez added on the 2012-01-05 08:42:54 by nitro2k01 nitro2k01
OK. We all know your have that random code generator and an army of slave testers checking if the outcome is interesting... ADMIT IT NOW! ;)
rulez added on the 2012-01-05 09:49:39 by raer raer
rulez added on the 2012-01-05 10:05:43 by provod provod
nice sizecoding, people thumbing
rulez added on the 2012-01-05 12:06:53 by wysiwtf wysiwtf
great title
rulez added on the 2012-01-05 15:41:24 by Serpent Serpent
nice! :)
rulez added on the 2012-01-05 17:30:24 by mad mad
rulez added on the 2012-01-05 18:15:04 by sensenstahl sensenstahl
rulez added on the 2012-01-05 18:15:11 by musk musk
excellent idea !
rulez added on the 2012-01-05 18:43:47 by Bartoshe Bartoshe
rulez added on the 2012-01-05 21:04:12 by las las
Another awesome release!
rulez added on the 2012-01-07 10:52:17 by closed closed
rulez added on the 2012-01-11 22:48:24 by T$ T$
rulez added on the 2012-01-15 05:05:40 by orby orby
rulez added on the 2012-01-24 23:26:03 by Ped Ped
What nitro2k01 said.
rulez added on the 2012-01-24 23:41:55 by Tjoppen Tjoppen
rulez added on the 2013-02-26 18:07:33 by Pirx Pirx
256 awesome bits.
rulez added on the 2013-02-26 18:29:16 by Rob Rob
cool, looks fresh
rulez added on the 2013-09-30 23:39:26 by whizart whizart
rulez added on the 2014-04-12 13:44:09 by jespa jespa
cute :)
rulez added on the 2015-03-18 17:50:22 by HellMood HellMood
Pretty nice 32b =)

frag: Would like to know if there is a particular reason to use the magic number 0x3D4 besides exploiting it to get a certain number from a weird memory location. Can all the data after the code be relied on to be the same? Or is it just for some locations like the one you used?

Sorry if I ask stupid questions, little experience =)
rulez added on the 2019-06-07 17:42:14 by Tesseract Tesseract
@Tesseract: that's actually a VGA port (0x3D4). As i see it, the code changes the vertical offset in one go (re-using 13h as mode, then 20h in AH as parameter) You can test by changing 20h in AH to 10h, 40h, 80h.

See here : http://www.osdever.net/FreeVGA/vga/crtcreg.htm
added on the 2019-06-07 18:16:13 by HellMood HellMood
@HellMood: Thanks, I wasn't familiar with VGA ports before. If you don't mind, I want to ask more questions about some things on that site which I might have gotten wrong (Offset) - "Memory Address Size" means you can only reference memory in this byte range (is 2 in DOS unless running in protected mode, where it's 4 bytes) and pixels per address is the max amount of data structures forming a single pixel which can fit in Memory Address Size.

Have I gotten it right?
added on the 2019-06-08 19:10:57 by Tesseract Tesseract
Code:xadd si,dx

rulez added on the 2019-06-09 08:29:50 by TomCatAbaddon TomCatAbaddon

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