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Index > Main > Combination with repetition algorithm

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ManOfSteel



Joined: 02 Feb 2005
Posts: 1154
ManOfSteel
Hello,
Is there any algorithm to generate Combinations with repetition?
like:
00
01
10
11
Thank you in advance.
Post 26 Oct 2006, 09:26
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f0dder



Joined: 19 Feb 2004
Posts: 3170
Location: Denmark
f0dder
If you're going to google for it, try "permutation" instead of "repetition".
Post 26 Oct 2006, 09:36
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
try to use "inc" and "dec" instructions Very Happy
Post 26 Oct 2006, 10:46
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Maverick



Joined: 07 Aug 2006
Posts: 251
Location: Citizen of the Universe
Maverick
also remember you need one of the new 64bit CPUs for that, even better a quad core Very Happy
Post 26 Oct 2006, 12:39
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f0dder



Joined: 19 Feb 2004
Posts: 3170
Location: Denmark
f0dder
Maverick: why not one of the quad-cpu dualcore intel systems, giving 8 logical CPUs? Or one of the quad-cpu dualcore with ht, giving 16 logical? Razz
Post 26 Oct 2006, 12:41
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Maverick



Joined: 07 Aug 2006
Posts: 251
Location: Citizen of the Universe
Maverick
Nice computing juice, but then again I still see my C64 performing better scrolling in primitive 2D games than my 256 cores 20EHz PC's, and I reckon there must be something wrong.. and neither bits nor core nor Hz seem the right answer to this problem. Sigh!
Post 26 Oct 2006, 13:17
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f0dder



Joined: 19 Feb 2004
Posts: 3170
Location: Denmark
f0dder
Yeah well, PC hardware sucks. Decent timers wasn't added until APIC, and isn't really available for ring3 programmers. No generic high-performance DMA, etc.

(2D scrolling should be fine with an accelerated video card though... Even though that shouldn't have been necessary Smile ).
Post 26 Oct 2006, 13:43
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Borsuc



Joined: 29 Dec 2005
Posts: 2466
Location: Bucharest, Romania
Borsuc
do you mind recursion? it can be easily employed
Post 26 Oct 2006, 14:44
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
well, there were great scrollers on VGA with mode-X (or how was it called)
Post 26 Oct 2006, 14:44
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Maverick



Joined: 07 Aug 2006
Posts: 251
Location: Citizen of the Universe
Maverick
As long as they syncronize it with the vertical refresh period then it's ok (no, I don't pretend also the horizontal, as in the Amiga and its Copper Smile ).

But then again it's a habit: ever seen an Amiga mouse pointer? It's smooth, the PC ones are not, because once again they don't sync the sampling with the vbl.

And I could go on and on. Smile
Post 26 Oct 2006, 15:12
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f0dder



Joined: 19 Feb 2004
Posts: 3170
Location: Denmark
f0dder
It's possible to do horizontal syncing on PC as long as you don't do anything else Wink - I've seen coppebars done in text mode as well.
Post 26 Oct 2006, 15:19
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vid
Verbosity in development


Joined: 05 Sep 2003
Posts: 7105
Location: Slovakia
vid
what's "coppebar" ?
Post 26 Oct 2006, 16:16
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Madis731



Joined: 25 Sep 2003
Posts: 2140
Location: Estonia
Madis731
Code:
    xor eax,eax
@@:
    inc eax
    and eax,11b
    jmp @b
    

Image
Post 27 Oct 2006, 13:23
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