Looking for a simple smooth scroll test (mode x) for DOS

Posted on 2019-01-24, 16:41

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by vanfanel

in Marvin \ Software

in Marvin \ Software

Hi there! I am looking for a simple VGA smooth horizontal scroll test program. Some games would do, but they are not actually always smooth, so I'd like to get a proper test, I am sure there must be some simple mode-x horizontal scrolling examples, it's just that I can't find them! Thanks!

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Re: DOSBox Feature Request Thread

Posted on 2018-11-04, 12:01

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by vanfanel

in DOSBox General

in DOSBox General

I would like to see adjustable video refresh rate for the emulated machine. Games with smooth scroll (SuperFrog, Jazz JackRabbit, Pinball Dreams / Illusions, Turrican 2...) would be true to it's smooth-scrolling nature. As things are, they have these noticeable hiccups every few seconds.

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Re: An adaptation to SDL 2.0 (Alpha-level Android build attached)

Posted on 2018-10-08, 12:44

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by vanfanel

in DOSBox Patches

in DOSBox Patches

@NY00123: I have tried to patch against latest sources, and apparently it works well, but when trying to configure I get: ./configure: line 4867: syntax error near unexpected token `:,as_fn_error' ./configure: line 4867: `EXULT_CHECK_SDL(:,as_fn_error $? "*** SDL not found!" "$LINENO" 5)' Guess the …

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Re: Physical refresh rate patch causes sound problems (expected)

Posted on 2018-08-14, 14:42

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by vanfanel

in DOSBox Development

in DOSBox Development

@ripa: It happens on PC and Pi3b+, both. Also, it's notable on games with mod music like Jazz JackRabbit and SuperFrog. You have to pay attention, it happens after a while. It happens on latest svn + patch, but not on 0.74 + patch. That's why I need help finding out the problem.

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Re: Physical refresh rate patch causes sound problems (expected)

Posted on 2018-08-01, 02:03

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by vanfanel

in DOSBox Development

in DOSBox Development

C'mon guys, no one knows what has to be changed in audio code to match the custom VGA refresh rate?

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Brand new hardware for DOS gaming, does it exist?

Posted on 2018-07-30, 14:19

by

by vanfanel

in Marvin \ General Old Hardware

in Marvin \ General Old Hardware

HI there, I was thinking that, since X86 CPUs were extensively used in industrial enviroments back in the 80's and 90's, there may be need for replacements. I found this computer-on-a-board, which is compatible with a 486: http://www.emacinc.com/products/pc_compatible_sbcs/VSX-6124 However, it's not …

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Physical refresh rate patch causes sound problems (expected)

Posted on 2018-07-22, 12:58

by

by vanfanel

in DOSBox Development

in DOSBox Development

Hi all, I have been using a customized version of dosbox on both my Pi3 and X86_64 GNU/Linux systems. It's an SDL2 version (thanks to NY00123's work!) that I manually patch to accept a custom screen refresh rate. This custom refresh rate is needed so fine-scrolling games like SuperFrog, Pinball …

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Re: An adaptation to SDL 2.0 (Alpha-level Android build attached)

Posted on 2017-11-02, 16:42

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by vanfanel

in DOSBox Patches

in DOSBox Patches

@dugan: Could you please update your patch so it works against current Dosbox SVN? I have tried patching but it fails... [EDIT] I now build from your branch in git, so no problem 😀

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Re: An adaptation to SDL 2.0 (Alpha-level Android build attached)

Posted on 2016-03-20, 13:46

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by vanfanel

in DOSBox Patches

in DOSBox Patches

shankao wrote: That's great. Does it work properly? Can it be commited to the master branch, so more people can test it? Yes, it works great, but for some reason I can't imagine, DOSBOX devs seem to be staying in SDL 1.x, even if SDL 1.x is bit-rotten in many OSes already and is obvioulsy a dead …

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Re: An adaptation to SDL 2.0 (Alpha-level Android build attached)

Posted on 2016-02-16, 14:25

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by vanfanel

in DOSBox Patches

in DOSBox Patches

@NY00123: I have tried to apply the latest patch to R3924 as intended, and I get errors: manuel@vader:~/src/dosbox_BUILD$ patch < dosbox_sdl2_20150713.diff patching file acinclude.m4 patching file AndroidManifest.xml patching file ant.properties patching file build.properties patching file build.xml …

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Re: SVN on OS X - core=dynamic causes segfault

Posted on 2011-09-08, 09:13

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by vanfanel

in DOSBox Development

in DOSBox Development

I made SWAP_CONTROL true in the sources (for SDL_GL) to avoid tearing, adjusted the refresh rate to exactly 60HZ in vga_draw.c, then defined an exact 60.00HZ in OSX and got Jazz Jackrabbit running smooth as silk with dynamic cpu at 20000 cycles :D Just to let you know your help was put into good use …

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Re: SVN on OS X - core=dynamic causes segfault

Posted on 2011-09-07, 17:43

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by vanfanel

in DOSBox Development

in DOSBox Development

@Dominus: It worked at last! No problems with dynamic cpu, either :) I had to rebuild aind reinstall 32bit libsdl as well, following your exact exports (as root). Oh, and this is not a VM! It's a Macbook I got back in 2007. GMA graphics model, now dirty and with damaged case.. jeez, even my Amiga …

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Re: SVN on OS X - core=dynamic causes segfault

Posted on 2011-09-07, 13:19

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by vanfanel

in DOSBox Development

in DOSBox Development

I haven't mocked Apple's binaries, but installed automake/autoconf/libtool etc in a separate directory: Apple's binaries live in /usr/bin while mine live in /usr/local/bin. So I removed /usr/local from my /etc/paths and now I'm on Apple's default tools again, with the versions you would expect. But …

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Re: SVN on OS X - core=dynamic causes segfault

Posted on 2011-09-07, 11:41

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by vanfanel

in DOSBox Development

in DOSBox Development

Tried a new fresh copy of the trunk sources, exported the new CFLAGS including -m32, ran autogen.sh, configure with the sdl prefix and all, and still no luck. The same exact errors on building.

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Re: SVN on OS X - core=dynamic causes segfault

Posted on 2011-09-07, 10:31

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by vanfanel

in DOSBox Development

in DOSBox Development

@Dominus: then I'd be more than happy to know how to tell it to compile for 64bits, it's very stubbon 😁

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Re: SVN on OS X - core=dynamic causes segfault

Posted on 2011-09-07, 09:54

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by vanfanel

in DOSBox Development

in DOSBox Development

@Qbix: I'm attaching the files. @Dominus: Same errors after that, sorry

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Re: SVN on OS X - core=dynamic causes segfault

Posted on 2011-09-06, 09:54

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by vanfanel

in DOSBox Development

in DOSBox Development

Compiled SDL 1.2.14 from the tar.gz in the libsdl page, in 32bits. I have compiled this version on Linux countless times, and also compiled dosbox against it, with no problems at all. Installed it in /usr/local32 via configure --prefix. Pointed dosbox sources to the new 32bits sdl with the exports: …

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Re: SVN on OS X - core=dynamic causes segfault

Posted on 2011-09-06, 09:35

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by vanfanel

in DOSBox Development

in DOSBox Development

@Dominus: SDL is in 64bits, that could be the problem. I compiled and installed 1.2.14 sources. I'm trying to build the trunk in cvs (cloned yesterday). @emendelson: I got the exports from your instructions, and I also run a make clean, the autogen.sh script and the configure script. So, what are my …

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Re: SVN on OS X - core=dynamic causes segfault

Posted on 2011-09-05, 21:45

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by vanfanel

in DOSBox Development

in DOSBox Development

Hello there, I can't, for the love of me, generate a 32bits executable on osx (Snow Leopard, 10.6.8 ). This is what I'm trying. First, the exports: export CFLAGS='-I/usr/local/include -O2 -arch i386' export CXXFLAGS=$CFLAGS export CPPFLAGS=$CXXFLAGS export LDFLAGS='-L/usr/local/lib -O2 -arch i386' …

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