The good old WChess 1.05 (DOS version)

[mclane]

how fast is your hardware ?? mine is doing 22.000 NPS on a t7600 2.3 Ghz in the dosbox with 105 cycles.

yours is much/hell faster. why ??

[F.Huber]

how fast is your hardware ?? mine is doing 22.000 NPS on a t7600 2.3 Ghz in the dosbox with 105 cycles.

yours is much/hell faster. why ??

Hi Thorsten,

it's a long time since I've used DOS-Box (because I usually run such programs on my DOS/Win98 notebook), but 105 cycles is ways to slow!
With Ctrl-F12 you can increase the cycles - here's a site with a few more performance settings for DOS-Box:
http://www.dosbox.com/wiki/Basic_Setup_ ... erformance

Franz

[Michel]

Also make sure dosbox is using a dynamic core

http://www.dosbox.com/wiki/Dosbox.conf# ... c_.7C_auto

It should be the default but...

[Daniel Mehrmann]

how fast is your hardware ?? mine is doing 22.000 NPS on a t7600 2.3 Ghz in the dosbox with 105 cycles.

yours is much/hell faster. why ??

Well, my hardware is not as fast. It's a outdated Q6600@3,00Ghz.

I'm using Free-DOS 1.1, installed with default settings of VMware (MS-DOS profile).

Regards
Daniel

[mclane]

freedos is no emulator, isn't it ?
you boot your machine with a CD and run dos from the scratch.

while dosbox or dfend are emulators of dos running under windows, that might explain the speed difference of course.

[Mike S.]

wchess -h1200000 -LI -V0 -P3

Thanks. Maybe it works; Wchess 1.05 does not give a response about the hash size (I seem to remember 1.04 did but I'm not sure). Level and variety (=randomness) preset works, the "P" parameter is ignored but can be set in the interface.

It seems to me that Wchess 1.05 if set to "easy" (= ponder off), it still makes the ponder calculations but doesn't use them. But the DOSBox emulation can be temporarily stopped with [Alt]-[F12] if required.

[Michel]

while dosbox or dfend are emulators of dos running under windows, that might explain the speed difference of course.

No dosbox with dynamic core is not an emulator. It executes on bare metal.

But apparently VMWare + FreeDos is still faster than the virtualization in dosbox.

[Paloma]

Hi Franz,

is your Website down?

[Daniel Mehrmann]

freedos is no emulator, isn't it ?

No, it a full OS and it feels like a real DOS
Look at http://www.freedos.org/

Technical stuff: http://www.freedos.org/freedos/about/

you boot your machine with a CD and run dos from the scratch.

Yes, that's what i did with my VM. It will be installed on the harddisk.


Regrads,
Danel

[Michel]

On my machine wchess+freedos+virtualbox seems to be a little under 50% faster than wchess+dosbox with dynamic core.