[EMAIL PROTECTED] wrote:
> Hmmm..... 30% (WinAmp) + 40% (hard drive under stress - an MP3 at
> 5Mbytes/sec?!?!?) = 70%
> That leaves 30% free to run the sound card and graphics card - more than
> ample. So why stutter unless..... wait for it.... the graphics card drivers
> are crap!
Could be....
> > In Half Life, I had stuttering noises, this was cured by A.
> Lowering
> >resolution, why? Not because too much data was going to the video card and
> >it had to wait to fill buffers, but because too much info was going to the
> >CPU! That was on my P200, now with my P2-450, I can run the same res, with
> >the same vid card, same drivers, same OS...and NO STUTTERING!!!
>
> That is slightly different because Half-Life is a very processor intensive
> program. An MP3 can be decoded by a 486 in DOS - I don't think the same
> could be said of running Half-Life. I have also seen Half-Life, Quake 2 and
> Carmageddon stutter on a P2-450 because the graphics card was at fault -
> replacing the drivers fixed it and all games now run very smoothly.
Hmmm...
> > Have you ever looked at the bus scematic for BX chipsets? PCI bus is
> >on a different bus, the AGP is pretty much on the PCI bus. ISA is on a
> >different one. Have you ever looked at benchmarks across CPU's?
Rigth..
> Have you ever designed a CPU? Sorry, perhaps that was unfair. Ok, it was
> only Z80 equivelent, but it worked! (Pity I never got to build it on
> anything other than software).
Yes! Actually my job is to verify CPU's. The PCI bus does more than you think!
And an
on-chip CPU bus is even more complex. Most modern CPU's can server several
busses
at the same time. (There was even a Z80 that had a seperate IO and memory
bus!!!)
> If card A sends a time-critical request to the CPU, but the CPU can't do
> anything because it is waiting for card B to say "finished" and release the
> interrupt disable flag, what happens? Card A will miss out on data. It's
> really a simple concept, I don't see why you're having such trouble with it.
Nope. Card A won't miss the data, but will be stalled!
> >Does the
> >graphics card scale to the cpu? Or does the CPU scale to the graphics card?
>
> That depends on whether the drivers tell the CPU to ignore interrupts from
> other parts of the system, effectively locking up the CPU. A *good* driver
> will ont do this.
Right.
> >Let me ask you this. If you have a P150 and a GeForce256, will the
> computer
> >lock up?
>
> That depends what you are doing.
>
> > HOW CAN IT!?!
>
> Quite easily if you decide to run somelike like Alien vs Predator on it!
>
> >***************The CPU has to send so much data to the graphics card, that
> >it has no time to get data to the sound card, hence the
> >stuttering*************.
>
> In Windows at 640x480 resolution? Hmmm..... the 480 doesn't seem to bothered
> about this with a Trident ISA card. I guess the GeForce256 must be crap
> then. On the other hand, it might be that the damn thing just needs
> replacement drivers......
To much data will result in a something going wrong. The GeForce256 can handle
more
data than the CPU can deliver. (Between lines, the Riva 128 couldn't be
saturated by
a Pentium II @ 233Mhz.)
Cheers,
Ralph -> Read my signature!
--
=======================================================================
Ralph Smeets Functional Verification Centre Of Competence - CMG
Voice: (+33) (0)4 76 58 44 46 STMicroelectronics
Fax: (+33) (0)4 76 58 40 11 5, chem de la Dhuy
Mobile: (+33) (0)6 82 66 62 70 38240 MEYLAN
E-Mail: [EMAIL PROTECTED] FRANCE
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"For many years, mankind lived just like the animals. And then
something happened that unleashed the powers of our imagination:
We learned to talk."
-- Stephen Hawking, later used by Pink Floyd --
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