Re: Where in the sources can I tweak an emulated videomode refresh rate?

Posted on 2010-11-07, 00:54

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by gaula92

in DOSBox Development

in DOSBox Development

@ykhwong: I applied the patch you provided on CVS and stable 0.74, both versions accept it. The problem is that it doesn't seem to do anything. I've been reading your instructions and augnober's instructions, and added those values to the .conf file I'm using: vsyncrate=60 vsyncmode=on ..but there's …

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Re: Where in the sources can I tweak an emulated videomode refresh rate?

Posted on 2010-11-02, 20:20

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by gaula92

in DOSBox Development

in DOSBox Development

...flat panels do scale 320x240@whateverHZ to something like 640x480@60HZ. They all do it, or at least every panel I've ever tried so far (and they've been a lot). Enter the panel OSD while you're running a 320x240 mode, and you'll see it's running in 640x480. It's not about connection methods. It's …

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Re: Where in the sources can I tweak an emulated videomode refresh rate?

Posted on 2010-11-02, 14:46

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by gaula92

in DOSBox Development

in DOSBox Development

I have no idea about vertical-sync for surface and overlay outputs because I do not find anything related to vsync in SDL 1.2 references. I get vsync with DirectFB, so VSYNC is NOT the problem. Refresh rate is. Should vsyncrate=60 force a 60HZ refresh rate even with SDL surface output? Does …

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Re: Where in the sources can I tweak an emulated videomode refresh rate?

Posted on 2010-11-02, 14:26

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by gaula92

in DOSBox Development

in DOSBox Development

ykhwong:I'm not using openGL but plain SDL on the framebuffer device via directfb. Should I change anything different?

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Re: Where in the sources can I tweak an emulated videomode refresh rate?

Posted on 2010-11-01, 17:33

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by gaula92

in DOSBox Development

in DOSBox Development

h-a-l-9000: no, it doesn't, but for some reason my monitor syncs perfectly with fixed-60HZ modes (I already patched SDLMAME for this same reason and I get smooth perfect scroll in every game, forcing those exotic 58 or 59 HZ games into 60HZ) while it has a hard time syncing with the smalles deviance …

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Re: Where in the sources can I tweak an emulated videomode refresh rate?

Posted on 2010-11-01, 17:10

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by gaula92

in DOSBox Development

in DOSBox Development

Thanks, ykhwong, but I mean for a much simpler solution for NEAR-60Hz video modes, it seems this patch doesn't work anymore (it's from 2005), and it specifically says it's not meant for "console ports, running at 50 or 60HZ". What about setting this "fps" variable in "vga_draw.cpp" to 60 ? Should it …

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Re: VESA modes for /etc/fb.modes

Posted on 2010-11-01, 16:42

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by gaula92

in DOSBox Development

in DOSBox Development

No, there isn't. It's a NV50 chip. NV50 is not supported by nvidiafb, and nouveau, the new nvidia framebuffer/driver, doesn't allow arbitrary framebuffer refresh rates from from fbset. If you guys know about another native framebuffer for NV50 cards, then tell me 😀

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Where in the sources can I tweak an emulated videomode refresh rate?

Posted on 2010-11-01, 13:44

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by gaula92

in DOSBox Development

in DOSBox Development

That's about it. Where in the Dosbox sources could I tweak an emulated videomode refresh rate? For example, 320x240 (mode-X) runs NEAR 60HZ, but it's NOT 60HZ and I need it at exactly 60HZ. I know there are DOS utils to tweak refresh rate for DOS video modes, but they don't work in DOSBOX. thanks

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Re: VESA modes for /etc/fb.modes

Posted on 2010-11-01, 13:38

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by gaula92

in DOSBox Development

in DOSBox Development

@TeaRex: Thanks a lot, but I've found out that I just can't use arbitrary video modes with arbitrary frequencies on the UVESAFB framebuffer in Linux (I should have read that before trying to specify those custom modes in /etc/fb.modes) That said, I need another solution to make MODE-X games …

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Setting mode-x refresh rate within dosbox

Posted on 2010-10-27, 22:29

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by gaula92

in DOSBox General

in DOSBox General

Hello there Is there any way to set mode-x games refresh rate within DOSBOX? In the host side, I can only use certain refresh rate frequencies since I'm using a Linux framebuffer. I've tried Univbe, but the Unicentr utility doesn't allow me to change refresh rates like I would on a real S3 machie. …

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Re: VESA modes for /etc/fb.modes

Posted on 2010-10-27, 15:31

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by gaula92

in DOSBox Development

in DOSBox Development

Ok, but I have another doubt related to DOS video modes: Why does /etc/fb.modes say 320x200 is 85HZ? Does it make any sense from dosbox's viewpoint? I mean, isn't mode13h 320x200@70 and mode-x 320x240@60HZ? Why are both modes listed as 85HZ all around the net??

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VESA modes for /etc/fb.modes

Posted on 2010-10-27, 14:55

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by gaula92

in DOSBox Development

in DOSBox Development

I'm running Dosbox with the SDL API running on Directfb, wich in turn runs on the uvesafb framebuffer. It's a great solution, with minimal overhead. In fact it uses less CPU % that the OpenGL backend on Nvidia binary drivers (almost 5% faster than OpenGL in Super Frog and Jazz Jackrabbit). To …

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Re: help using Fluidsynth patch with Dosbox 0.74 by clestrade

Posted on 2010-10-25, 18:03

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by gaula92

in DOSBox Development

in DOSBox Development

I fixed it. I just needed to add the necessary -lfluidsynth parameter in the Makefile (since the configure script doesn't have an option to add it). I also had to tweak src/misc/setup.cpp, since bool Prop_string::CheckValue insisted in saying my mididevice=synth entry in prince2.conf wasn't a valid …

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help using Fluidsynth patch with Dosbox 0.74 by clestrade

Posted on 2010-10-25, 15:57

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by gaula92

in DOSBox Development

in DOSBox Development

Hello there I found a nice patch to use libfluidsynth as a MIDI device in Dosbox in the sourceforge project page. It's a simple patch, but I can't get it to compile with 0.74 sources (I had to manually apply it to some files). I'm getting errors while compiling dosbox, but they have no sense to me. …

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Re: looking for IMGMOUNT out of DosBox or similar tool

Posted on 2009-11-04, 11:23

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by gaula92

in DOSBox General

in DOSBox General

ah! CDEMU seems to be a good solution: will try it! Thanks a lot!!

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looking for IMGMOUNT out of DosBox or similar tool

Posted on 2009-11-03, 13:18

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by gaula92

in DOSBox General

in DOSBox General

Hello there!! DosBOX in Gentoo Linux with openGL is perfect! So I would like to use one of it's features out of dosbox itself: I would like to use IMGMOUNT or a similar tool to mount mixed mode cd images on Linux, for wine usage with games like Panzer Dragoon, Virtua Fighter, etc , wich have 1 data …

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Re: DOS games with tracker music

Posted on 2009-10-26, 09:04

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by gaula92

in DOSBox Games/Apps

in DOSBox Games/Apps

Wow! Thanks for all the responses!! I have A LOT of gaming to hear now! 😁 Thanks Thanks a lot!

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DOS games with tracker music

Posted on 2009-10-15, 15:51

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by gaula92

in DOSBox Games/Apps

in DOSBox Games/Apps

Hello there! I'm a happy dosbox user on Linux (Gentoo) with OpenGL and perfect scroll/sound on custom video modes! So all I've to do now is discover some of the greatest DOS games ever. I specially like game music, and I'm an Amiga lover, so I prefer module music. I'm trying to find a list of games …

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vgaonly mode and dynamic cpu core

Posted on 2009-07-03, 10:55

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by gaula92

in DOSBox General

in DOSBox General

Is it possible to have vgaonly core and dynamic cpu core? Does it really work? I believe the level of CPU accuracy needed for vgaonly mode could make dynamic core impossible....but... are they working at the same time? Thanks!

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Re: Dosbox 0.73 and GUS emulation CPU usage

Posted on 2009-07-01, 14:14

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by gaula92

in DOSBox General

in DOSBox General

Yes, I supose FM synthesis emulation is more CPU-demanding as it requires realtime waveform calculation as opossed to pre-recorded PCM samples played by a GUS. That's for MIDI, but correct me if I'm wrong. But I was talking about PCM channels only: let's say a game uses PCM for music & effects ( …

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