rec.autos.simulators

GPL with Cyrix 6x86 crashes?

Jan Otto Ruu

GPL with Cyrix 6x86 crashes?

by Jan Otto Ruu » Thu, 09 Apr 1998 04:00:00

I have a Cyrix 6x86 166+ processor, and GPL demo crashes when starting the
program. Has anyone been able to run it on a Cyrix processor?

--

Jan Otto Ruu

GPL with Cyrix 6x86 crashes?

by Jan Otto Ruu » Thu, 09 Apr 1998 04:00:00

I found the answer in  http://gpl.gamestats.com . It will not run on a Cyrix
chip. So it seems like a good time to upgrade :-)


>I have a Cyrix 6x86 166+ processor, and GPL demo crashes when starting the
>program. Has anyone been able to run it on a Cyrix processor?

>--


John Hartridg

GPL with Cyrix 6x86 crashes?

by John Hartridg » Thu, 09 Apr 1998 04:00:00



> I found the answer in  http://gpl.gamestats.com . It will not run on a
Cyrix
> chip. So it seems like a good time to upgrade :-)


> >I have a Cyrix 6x86 166+ processor, and GPL demo crashes when starting
the
> >program. Has anyone been able to run it on a Cyrix processor?

What have Papyrus/Sierra got against the Cyrix processors -
the Nascar 2 demo wouldn't work with a Cyrix processor
either, even though the final version does ?  It can't
be that difficult to make the code work with both straight
off, is it ?  You don't end up with two executables with
the final versions - so why don't the demos work ?

John
--
John Hartridge            | FUJIFILM Electronic Imaging Ltd
Senior Software Engineer  | Three Cherry Trees Lane,

Internal phone 3282       | Hert HP2 7RH

Jeff Salzma

GPL with Cyrix 6x86 crashes?

by Jeff Salzma » Thu, 09 Apr 1998 04:00:00

On 8 Apr 1998 13:18:33 GMT, "John Hartridge"


>What have Papyrus/Sierra got against the Cyrix processors -
>the Nascar 2 demo wouldn't work with a Cyrix processor
>either, even though the final version does ?  It can't
>be that difficult to make the code work with both straight
>off, is it ?  You don't end up with two executables with
>the final versions - so why don't the demos work ?

>John

        Cyrix has a lousy FPU....nuts, and I work for National
Semiconductor, too.....

Jeff

Wolfgang Prei

GPL with Cyrix 6x86 crashes?

by Wolfgang Prei » Thu, 09 Apr 1998 04:00:00


>What have Papyrus/Sierra got against the Cyrix processors -
>the Nascar 2 demo wouldn't work with a Cyrix processor
>either, even though the final version does ?  It can't
>be that difficult to make the code work with both straight
>off, is it ?  You don't end up with two executables with
>the final versions - so why don't the demos work ?

I'm just wildly guessing, but I think they have a routine that checks
for the processor type during game start-up and then branches. One
part of the code is optimized for Cyrix, another for Intel. If you are
doing a pre-lease demo, it's easier to have just one branch - and
since you have to choose, it makes more sense to provide for the chip
with the wider marketshare. Like it or not, Intel is "default", AMD
and Cyrix come second in installed user base.

--
Wolfgang Preiss       \ E-mail copies of replies to this posting are welcome.

Uni des Saarlands       \ and U.S. law. You have been warned.

AKH

GPL with Cyrix 6x86 crashes?

by AKH » Thu, 09 Apr 1998 04:00:00

Just a guess on my part, but since I saw one report of GPL working on a
CYRIX (a MX version) I imagine that it is only the older run of
processors that have the problem. That doesn't mean if you just bought a
166+ it would work, but rather the newer design that includes the MMX
instructions (a Cyrix with MX at the end of its name).

Can anyone confirm this for Cyrix owners? If it runs on your Cyrix,
which EXACT model are you using?

FWIW, It runs GREAT on my AMD K6 233 OC'd to 262.5 with a V1000 card.

Alan
http://www.kiva.net/~akh/simshop.html


> I have a Cyrix 6x86 166+ processor, and GPL demo crashes when starting the
> program. Has anyone been able to run it on a Cyrix processor?

> --


Byron Forbe

GPL with Cyrix 6x86 crashes?

by Byron Forbe » Fri, 10 Apr 1998 04:00:00


> I have a Cyrix 6x86 166+ processor, and GPL demo crashes when starting the
> program. Has anyone been able to run it on a Cyrix processor?

> --


  I have seen 1 post from a 233 owner who had no probs. The rest seem to
be a no go.
SBeshe

GPL with Cyrix 6x86 crashes?

by SBeshe » Fri, 10 Apr 1998 04:00:00

with nascar2 i have to turn cpuid off.

runs fine after that.

Michael Knephe

GPL with Cyrix 6x86 crashes?

by Michael Knephe » Fri, 10 Apr 1998 04:00:00

The FPU wouldn't have anything to do with the game crashing. It would
just run slower than on an Intel or AMD chip.


> On 8 Apr 1998 13:18:33 GMT, "John Hartridge"

> >What have Papyrus/Sierra got against the Cyrix processors -
> >the Nascar 2 demo wouldn't work with a Cyrix processor
> >either, even though the final version does ?  It can't
> >be that difficult to make the code work with both straight
> >off, is it ?  You don't end up with two executables with
> >the final versions - so why don't the demos work ?

> >John

>         Cyrix has a lousy FPU....nuts, and I work for National
> Semiconductor, too.....

> Jeff

--
Bringing up the rear in the 1998 F1RS Racing League ...
http://ourworld.compuserve.com/homepages/as/f1rl.htm
http://www.wenet.net/~josefk/f1rl/
Michael Knephe

GPL with Cyrix 6x86 crashes?

by Michael Knephe » Fri, 10 Apr 1998 04:00:00



> >What have Papyrus/Sierra got against the Cyrix processors -
> >the Nascar 2 demo wouldn't work with a Cyrix processor
> >either, even though the final version does ?  It can't
> >be that difficult to make the code work with both straight
> >off, is it ?  You don't end up with two executables with
> >the final versions - so why don't the demos work ?

> I'm just wildly guessing, but I think they have a routine that checks
> for the processor type during game start-up

This, I suspect is probably correct.

This I doubt. I expect they just make the program bypass the cpu
detection routine.

--
Bringing up the rear in the 1998 F1RS Racing League ...
http://ourworld.compuserve.com/homepages/as/f1rl.htm
http://www.wenet.net/~josefk/f1rl/

Ralph Willia

GPL with Cyrix 6x86 crashes?

by Ralph Willia » Fri, 10 Apr 1998 04:00:00

I think I must be the only person in the world who has
GPL running on
a Cyrix Chip.
PR233MX, R534a M-Tech Motherboard, 64MB EDO, Matrox
Mystique w/2MB, MaxiGamer 3DFX Voodoo w/4MB, SB16 SCSI,
T-2 using CH pedals, hmm....guess that is all that is
relevent.
I have my old P200+ (non-MMX) here too. Maybe I will
put it in this weekend and see if it works still.
Runs fine, all detail on.
HTH, will post results if I get around to checking the
200+
Ralph Williams

> Just a guess on my part, but since I saw one report of GPL working on a
> CYRIX (a MX version) I imagine that it is only the older run of
> processors that have the problem. That doesn't mean if you just bought a
> 166+ it would work, but rather the newer design that includes the MMX
> instructions (a Cyrix with MX at the end of its name).

> Can anyone confirm this for Cyrix owners? If it runs on your Cyrix,
> which EXACT model are you using?

> FWIW, It runs GREAT on my AMD K6 233 OC'd to 262.5 with a V1000 card.

> Alan
> http://www.kiva.net/~akh/simshop.html


> > I have a Cyrix 6x86 166+ processor, and GPL demo crashes when starting the
> > program. Has anyone been able to run it on a Cyrix processor?

> > --


Jim Sokolof

GPL with Cyrix 6x86 crashes?

by Jim Sokolof » Mon, 13 Apr 1998 04:00:00


> The FPU wouldn't have anything to do with the game crashing. It would
> just run slower than on an Intel or AMD chip.

And GPL is FPU intensive, so even though the release version will
undoubtedly "work" with the Cyrix chips, the 6x86 without FPU will
make the game crawl.

---Jim

Jim Sokolof

GPL with Cyrix 6x86 crashes?

by Jim Sokolof » Mon, 13 Apr 1998 04:00:00



> > and then branches. One
> > part of the code is optimized for Cyrix, another for Intel.

> This I doubt. I expect they just make the program bypass the cpu
> detection routine.

What on earth would be the purpose of doing CPU detection? If you
never did anything different based on the answer, why bother to ask
the question?

Joystick reads can be made more exact by using the Pentium RDTSC
instruction, which is not supported on the early Cyrix chips.

---Jim

Ralph Willia

GPL with Cyrix 6x86 crashes?

by Ralph Willia » Mon, 13 Apr 1998 04:00:00

On Sun, 12 Apr 1998 13:52:39, "Jim Sokoloff"

I have said this before. I am running GPL demo on a
Cyrix PR233MX with
a MaxiGamer 3DFX card.
(I think without a 3DFX card GPL will "crawl" on any
xx86 computer made
at this time)
It runs great. I can see a slight slowdown when lots of
stuff is happening
at 800x600. By this I mean, if I am crashing on certain
places on the track.
In normal laps there is no slowdown whatsoever.
If I have time today (doubtfull) I am going to put a
Non-MX Cyrix chip in
and see if it runs.
Jim, the Cyrix *has* a FPU.
It also appears the joystick driver is fixed for the
Cyrix compared to the
one that is in N2. Don't know as I can't compare it to
an Intel, but it does
seem to work fine.
I don't know about anyone else...this is my experience.
It does not "crawl".
Ralph Williams


> > The FPU wouldn't have anything to do with the game crashing. It would
> > just run slower than on an Intel or AMD chip.

> And GPL is FPU intensive, so even though the release version will
> undoubtedly "work" with the Cyrix chips, the 6x86 without FPU will
> make the game crawl.

> ---Jim


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