Re: DOSBox takes extra CPU time to draw the screen

Posted on 2005-04-01, 00:08

by

by `Moe`

in DOSBox General

in DOSBox General

The bottleneck is that there is nothing to be transferred anywhere. Dosbox emulates the chip itself. It does not (can not / must not) program your real video hardware, apart from asking for a frame buffer at a given resolution. The rest, like scan line updates, palette setting, timing registers, how …

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Re: Choice command

Posted on 2005-03-31, 23:56

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by `Moe`

in DOSBox General

in DOSBox General

By the way, if you want to contribute you are welcome to summarize your newly learned wisdom in the DosBox Wiki. That way other users can benefit as well 😉

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Re: Choice command

Posted on 2005-03-31, 23:55

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by `Moe`

in DOSBox General

in DOSBox General

Okay, you've pointed me to a small incompatibility to real DOS choice: in DOS, it would display [12345..], the actual choices. I've hardcoded that Y/N thingy in dosbox. You can put your own prompt on the choice line like this: choice /c:1234 /n Please choose one: those "echo is off" messages are …

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Re: SVGA choice

Posted on 2005-03-31, 09:44

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by `Moe`

in DOSBox Development

in DOSBox Development

Just to answer your question: IMHO yes. S3 is a good foundation for future development (win 3.1 runs in 256 colours), seems to be easy enough to emulate, and is widely known from the mid-90s on. About that text problem: Try looking at src/ints/int10_put_pixel.cpp, INT10_PutPixel. It doesn't yet have …

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Re: For the Devs: What direction to want DosBox to go?

Posted on 2005-03-31, 09:31

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by `Moe`

in DOSBox General

in DOSBox General

Well, I hope to get that hq2x/OpenGL-HQ thing finally final. It's around for more than a year (counting the first code lines written, my planning is even older), and is in pretty good shape, there's just that windows problem that I must fix Real Soon Now (tm).

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Re: Choice command

Posted on 2005-03-31, 00:23

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by `Moe`

in DOSBox General

in DOSBox General

The command is called "choice", not "choice:". The switch goes like "/c:1234", not like "/c1234". Move around that colon and it should work 😀

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Re: Thanks DOSBox (running oldskool PC demos)

Posted on 2005-03-30, 13:53

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by `Moe`

in DOSBox General

in DOSBox General

There's nothing to emulate for "assembly 3d graphics". From the emulators point of view, "assembly 3d graphics" is like "assembly sprite drawing" or "assembly waiting for user input". What demos usually do, and what drives emulators insane, is to modify their own code. That's a neat trick on those …

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Re: "noems" to "ram" + .bat commands support?

Posted on 2005-03-30, 10:05

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by `Moe`

in DOSBox Development

in DOSBox Development

It's not the best of references, but scroll down to "RUNNING DIFFERENT PROGRAMS" for an example: http://www.computerhope.com/batch.htm

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Re: Finally Syndicate Wars runs but not without problems

Posted on 2005-03-30, 10:00

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by `Moe`

in DOSBox Games/Apps

in DOSBox Games/Apps

I'm always using CVS, though my build might be 2 weeks old currently. Since I use gcc's profile-guided optimization, ih8regs' patch won't probably do much for me. I don't like it either. This is what gcc says about optimizing branches by hand: In general, you should prefer to use actual profile …

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Re: Finally Syndicate Wars runs but not without problems

Posted on 2005-03-30, 00:56

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by `Moe`

in DOSBox Games/Apps

in DOSBox Games/Apps

I've just checked with a random game. I already knew that sound settings have an effect, but I didn't realize it would be _that_ much. Even when wasting CPU in many different ways, using heavy scaling options and frameskip of just 1, simply halving the audio data rates from 48000 to 24000 more than …

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Re: "noems" to "ram" + .bat commands support?

Posted on 2005-03-29, 23:16

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by `Moe`

in DOSBox Development

in DOSBox Development

I must admit, I don't entirely get what you want, but batch files work, the "type" command works, dosbox.conf has a section called "autoexec" - now guess what it does. To access batch files from everywhere, you need to set PATH as it was in original DOS. The only important difference to real DOS is …

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Re: Toonstruck doesent work...

Posted on 2005-03-28, 22:54

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by `Moe`

in DOSBox Games/Apps

in DOSBox Games/Apps

Perhaps these instructions should be somewhere very visible on the dosbox hp... given the amount of users that already fail at these very first steps. Just a thought... 😉

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Re: Finally Syndicate Wars runs but not without problems

Posted on 2005-03-28, 22:50

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by `Moe`

in DOSBox Games/Apps

in DOSBox Games/Apps

What settings do you use? Especially sound settings and output method interest me, since I can't even get near 80.000 cycles on my 3700+.

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Re: path problem

Posted on 2005-03-28, 22:47

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by `Moe`

in DOSBox General

in DOSBox General

We still need more details on what exactly you did and what error messages appeared, and what else you tried.

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Re: path problem

Posted on 2005-03-28, 15:44

by

by `Moe`

in DOSBox General

in DOSBox General

Read the documentation (most importantly: the README), then use your newly aquired knowledge, and if it still fails, give us details on what you tried to get it woking.

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Re: CVS compile question(s)

Posted on 2005-03-27, 13:33

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by `Moe`

in DOSBox Development

in DOSBox Development

Nice, thanks, it's been quite a while since i last used mingw. Seems like it has matured quite a bit.

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Re: Screen Problems

Posted on 2005-03-26, 18:38

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by `Moe`

in DOSBox General

in DOSBox General

Wild Guess: Monitor adjustmen neccessary. Try the settings your display offers, h-/v-size, pincushion and trapez correction and that stuff. If the picture is almost the expected size, but distorted and pushed up a bit, that may help. It may be a totally different problem, however.

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Re: CVS compile question(s)

Posted on 2005-03-26, 18:34

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by `Moe`

in DOSBox Development

in DOSBox Development

It should work, especially for MSYS. They don't do that fancy path translating like cygwin does. Though I faintly recall there was a way to get unix-path behaviour for an app if you want it. Anyways, try it, I guess it simply works. And then send me a quick guide for compiling CVS with MSYS so I can …

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Re: Switching CD images in a game

Posted on 2005-03-26, 15:37

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by `Moe`

in DOSBox General

in DOSBox General

I don't know if it works, but try mounting the second CD in the same dir as the first CD (just like you described), then press Ctrl-F4. That may or may not tell dosbox to check for new files, it depends a bit on how exactly dosbox accesses the files, never tried it. Please tell me if it works 😉

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Re: Running DOSBOX in XP using 24-Bit?

Posted on 2005-03-26, 15:34

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by `Moe`

in DOSBox General

in DOSBox General

In the context of most frame buffers, 32bpp is 24bpp plus padding. Using the extra 8 bit as alpha channel is something done for, say, PNG images or OpenGL textures, but (usually) not for application windows. The extra 8 bit go unused most of the time, but they are faster to use, as the CPU can …

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