...

IMPORTANT FIX : If anyone downloaded this before 2011-01-01 please redownload (see post below)

Task: find out what the code is supposed to do

Hints:

1. It DOES work
2. It IS useful
3. It IS copyrighted
4. I made it easy by decommenting the code partially only

Especially interesting for those who missed or failed my previous challenge t=9016

P.S.: the syntax highlighting on pastebin sucks

EDIT: http://board.flatassembler.net/topic.php?t=15664

Temperature conversion?

NO. Ways more useful and spectacular

Why'd you put it on pastebin anyway, instead of a <code> block here?

Drawing a bitmap?

I know, i know!! It generates the serial number to activate the UGM-133 Trident II.

DOS386,

Does it compile? movntq eax, 0 looks pretty goofy, just as cmpntq ch,0 does. Without ntqs got 204 bytes (use32, naturally).

bored

I was wondering about those as well - what's the story, dosman?

baldr wrote:

> Does it compile?

YES (might be marginally incomplete, though).

> movntq eax, 0 looks pretty goofy, just as cmpntq ch,0 does.
> Without ntqs got 204 bytes (use32, naturally).

You now see why they are in

Hint: My NTQ MACRO's might help a bit

revolution wrote:



You won the challenge ... but only to 83.2% because:

+ Found it out
+ Posted image
- Colours are wrong
- Stole 2 pixles in both dimensions (should be 450 x 450)
- Lost the chessboard in bottom right square
- The bloat of your image is far away from acceptable (should be <=694 Byte's)



Download now: TESTPICT.ZIP (6'914 Byte's)

Primary CHALLENGE IS CLOSED

Follow-up's:

- Optimize the code below 193 Byte's
- Optimize the PNG below 694 Byte's (669 achieved meanwhile)
- Code the remaining parts of the FASM-Photosh**

EDIT : updated attachments

And how is this "Ways more useful and spectacular"?

Just a small improvement in PNG size (669 bytes).
(Thanks go to PNGout really!)

There should be a semi-data driven improvement to the code - I'll give it some thought.''

[Attachment removed due to changes in op post above.]

Gamma calibration?

See above

bitRAKE wrote:

> Just a small improvement in PNG size (669 bytes).

A large improvement

> (Thanks go to PNGout www . ardfry . com / pngoutwin / really!)

I already have all PNG optimization tools, except, of course, PNGoutWIN

http://advsys.net/ken/utils.htm

http://www.jonof.id.au/forum/index.php?topic=1515.0

Obviously Ken Silverman is the King of PNG optimization but he isn't the King of Reliable announcements. He intended to open source PNGOUT some years ago, this didn't happen, instead PNGoutWIN arised, and PNGOUT license was "clarified" (-> more restrictive). Then he wrote that the compression of PNGOUT would egalize PNGoutWIN, just PNGoutWIN would be faster on multi-CPU systems. But as we can see, now PNGOUT is far behind PNGoutWIN The result from PNGOUT sucked compared to OPTIPNG (rare ...) so the 694 Byte's version is from OPTIPNG

http://optipng.sf.net/ http://sourceforge.net/projects/optipng/

My previous PNG challenge:
http://board.flatassembler.net/topic.php?t=7296

At least, I outperformed PNGoutWIN by factor 3.43 with my code