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Small old linux in dosbox with dosbox-svn-r4335

https://drive.google.com/open?id=1Zg5gLCE6Rq87cHpmnal0Wv3SxuC01NbP A small change to the dosbox configuration is needed to run it. [dosbox] memsize = 34 #for linux alone there can be 8 [cpu] core = dynamic cputype = pentium_slow #It can also be 386_slow, 486_slow Can be run with a framebuffer. In …

Re: DOSBox console mode.

Just one hint, any files created in DOSBox will be created with UPPERCASE filenames, regardless if you specify the output file in upper or lower case. This is important, because unlike Windows, Linux like any Unix is case sensitive, so you can have a file named BAR, bar, Bar, etc all in the same …

Re: 64-bit dynamic_x86 (patch)

@dreamer, @krcroft Yes, I used an jmarsh 's additional patch. Only he does not affect the results in mp3 encoding with the help of lame and in lua (alioth-benchmarksgame). I didn't post these results. The difference was equally clear. I enjoy this huge improvement in 64-bit performance (great work …

Re: 64-bit dynamic_x86 (patch)

I ran some tests and the two are roughly identical, within the noise of my system. I was referring to pre-release builds. Specifically this build. It didn't seem too optimal. LD_PRELOAD=./libpng12.so ./dosbox --version DOSBox version v0.75.0-pre-220-g78cc6 Tested on the same kernel with mitigations …

Re: 64-bit dynamic_x86 (patch)

Do you mean dosbox-staging as in: https://github.com/dreamer/dosbox-staging? (Your shell commands shows DOSBox SVN). Yes "my build".. what architecture, compiler, and optimization flags did you use? This thread is for 64-bit architecture. Look here. https://www.vogons.org/viewtopic.php?f=32&t=67673 …

Re: 64-bit dynamic_x86 (patch)

I tested the dosbox-staging version yesterday and the results were clearly lower than my build. I upload my compilation here if anyone wants to compare. https://drive.google.com/file/d/1L12wqanCgbojYM9UPFOj9crhcQOWrYk7/view?usp=sharing It was built under the new version of the C library (glibc-2.30) …

Re: 64-bit dynamic_x86 (patch)

i5 2500K (Sandy Bridge). Linux 64-bit. Quake timedemo demo1 average of 5 runs each. cycles max, core dynamic. Before: 105FPS. After: 117FPS. You could tell under what specific system you were running your binaries. Your results are unbelievably low compared to my older and much slower processor. …

Re: 64-bit dynamic_x86 (patch)

Intel(R) Core(TM) i5 CPU M 450 @ 2.40GHz Linux 5.4.1 dosbox-svn-r4296, gcc-4.9.4, x86_64, (the second result with the patch applied) D1: VAX MIPS rating: 115.27 116.38 PCBench: 70.6 75.4 quake 1.06 with sound, demo1 320x200: 102.5 107.1 800x600: 28.4 32.8

Re: 64-bit dynamic_x86 (patch)

The Mp3 Lame encoder very heavily uses the dosbox FPU functions (FPU_FLD_32, FPU_FST_32), it doesn't show the difference between Intel Xeon and Core 2 (coding times under 64-bit dosbox are very similar). However, the Dhrystone benchmark performs much better, it clearly shows the disproportions.

Re: 64-bit dynamic_x86 (patch)

The dynamic core always uses FSAVE/FRSTOR regardless of the host CPU's capabilities Thanks for this information. plus the Dhrystone benchmark is specifically designed to not test floating point performance. only emulated processor? Is this benchmark reliable? I wondered why he achieved such high …

Re: 64-bit dynamic_x86 (patch)

Different processor models different disparities between 32-bit and 64 versions. cat /proc/cpuinfo vendor_id : GenuineIntel cpu family : 6 model : 15 model name : Intel(R) Core(TM)2 CPU T7200 @ 2.00GHz dmesg | grep 'x86/fpu' [ 0.000000] x86/fpu: x87 FPU will use FXSAVE dosbox32 DHRY1ND.EXE - 58.19 ( …

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