Re: How do you switch to CGA Composite Mode? (Fooblitzky)

Posted on 2009-05-30, 07:29

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by ripsaw8080

in DOSBox Patches

in DOSBox Patches

That's a pretty simple program, and would be useful practice if you're interested in writing assembly code. BTW, port 0x3d8 always reads 0xff in DOSBox as far as I can tell, so not much reason to read it before writing it.

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Re: DOSBox 0.73 Discussion

Posted on 2009-05-30, 02:13

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by ripsaw8080

in DOSBox General

in DOSBox General

The installer for Down in the Dumps crashes with a divide-by-zero error (handled by DOS4GW). It tries to calcuate the performance of the CDROM with a series of random sector reads (INT 2F/AX=1508). When using a disc image, it's faster than the program allows for. Using a real CD device might not …

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Re: How do you switch to CGA Composite Mode? (Fooblitzky)

Posted on 2009-05-29, 05:54

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by ripsaw8080

in DOSBox Patches

in DOSBox Patches

I am well aware it's not an accurate representation. If nothing else, the RGB modes allow a background color which offers a lot of color artifact possibilities that the mode 6 algorithm won't take into consideration at all. For my part, none of this is intended as a substitute for real support in …

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Re: How do you switch to CGA Composite Mode? (Fooblitzky)

Posted on 2009-05-29, 03:34

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by ripsaw8080

in DOSBox Patches

in DOSBox Patches

One thing a TSR can't do is monitor port writes, so games that write to port 0x3d8 are a problem. I had to hack Boulder Dash II to stop it from messing up the color burst so I could capture a composite screenshot. The BD2 title screen is a good example of patterns that are specifically intended to …

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Re: MT-32 on latest DosBox

Posted on 2009-05-29, 03:27

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by ripsaw8080

in DOSBox General

in DOSBox General

Are you using an old config file with 0.73? A lot has changed, so you should create a new one with the settings you want (see the readme for instructions if you need them). The "config=" midi setting was changed to "midiconfig=" so it wouldn't conflict with DOSBox's internal CONFIG command.

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Re: Extreme Pinball - crash when activating dragon

Posted on 2009-05-28, 23:03

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

I've never gotten a crash screen from the extender like that. When activating the dragon by pressing "d", the game sometimes locks up with a snippet of sound repeating indefinitely; that's the only problem I've seen. The sound system drivers appear to be licensed, but I don't recall ever …

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Re: How do you switch to CGA Composite Mode? (Fooblitzky)

Posted on 2009-05-28, 15:34

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by ripsaw8080

in DOSBox Patches

in DOSBox Patches

Some games check the video mode after they set it, so it's also necessary to report back the intended mode or they might think the mode change failed. Also, setting the background/border color was causing Alley Cat and some others to display a black screen, so I trap that now as well. The attached …

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Re: How do you switch to CGA Composite Mode? (Fooblitzky)

Posted on 2009-05-28, 13:45

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by ripsaw8080

in DOSBox Patches

in DOSBox Patches

Using a TSR that requires a key press can be problematic, since some games take over the keyboard and don't let underlying programs (such as DOS) see the key presses. I figured it might be worthwhile to try a more automatic approach, and was able to get some nice results, although it's imperfect. …

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Re: Extreme Pinball - crash when activating dragon

Posted on 2009-05-27, 23:13

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

The problem seems a bit difficult to nail down. I sometimes see it when I change the type of SB card configured in the game's setup, but it stops after changing the amount of free conventional memory, like loading a TSR or using loadfix, even for just a small bit less memory. Could be a game bug …

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Re: How do you switch to CGA Composite Mode? (Fooblitzky)

Posted on 2009-05-27, 16:26

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by ripsaw8080

in DOSBox Patches

in DOSBox Patches

Maybe I'm missing the point of what you're trying to accomplish. DOSBox's CGA emulation supports composite color artifacting with 640x200x2 (mode 6) and the color burst bit just fine. What is lacking is support for the artifacted color with 320x200x4 (modes 4 & 5), and I don't think anything you can …

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Re: Jurassic Park (Ocean)

Posted on 2009-05-25, 17:39

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

I get the slow motion when joystick is enabled in the game's setup (INSTALL.EXE), but the speed is normal when the joystick is disabled. Maybe the config file is messed up somehow, and a fresh start would help: in INSTALL.EXE, press ESC to get to the quit menu and choose "restore defaults".

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Re: This Dos Based Application is not running

Posted on 2009-05-23, 15:38

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

This app wants the addresses for INT 1 and INT 3 to point at an IRET instruction, which I guess is to ensure a debugger isn't active. DOSBox's default handler calls its internal callback before the IRET, which the paranoid app doesn't like and comes up with the bogus error about the amount of files. …

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Re: RIP 3D Realms

Posted on 2009-05-18, 22:05

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by ripsaw8080

in Milliways

in Milliways

Maybe all out of bubblegum, but not out of business... there seems to be a distinction being drawn between shuttering the company and letting the DNF team go: http://kotaku.com/5259942/3d-realms-were-not- … e-nukem-forever

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Re: City of lost children (Psygnosis 1997)

Posted on 2009-05-18, 16:51

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

I can't reproduce the problem; game seems to work OK using an image of the disc with DOSBox 0.72; same long label as yours. The disc has audio tracks, so you should use a BIN/CUE image. I can only suggest that you're missing some small detail in correctly running the game, like changing default …

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Re: Chronomaster crashes

Posted on 2009-05-18, 16:44

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

Works OK for me on 0.72 with an image. The compatibility list mentions a crash when landing on a planet with an old version of DOSBox, so make sure you're using the latest version. Otherwise, provide more details about how you are mounting your drives and installing the game.

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Re: Problems with german files

Posted on 2009-05-16, 23:34

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

I knew there must be some reason; thanks for sharing it with us. Now if you would be so kind as to explain why 0xA0 is supported (which must also be undergoing some codepage translation).

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Re: Problems with german files

Posted on 2009-05-16, 22:38

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

There's an old thread about this game and issue: http://www.vogons.org/viewtopic.php?t=4800 As Qbix points out in that thread, it's fairly easy to modify the DOS_MakeName() function in dos_files.cpp to add characters that you would like to have in your own build of DOSBox. The accented letter …

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Re: Saving Games

Posted on 2009-05-13, 05:58

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

This thread covers the Microsoft eHome MCIR 109 Keyboard driver issue in Vista: Right-Shift / Backslash Keyboard Problems (SOLVED!)

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Re: System Shock Batch file

Posted on 2009-05-09, 00:11

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

DOSBox does not treat the %0 operator identical to real DOS, it changes the extension on the filename. You can see the effect of this by creating a batch file that has the line "ECHO %0" in it. Real DOS returns the name of the batch file for %0 exactly as you typed it, but DOSBox 0.72 adds the …

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Re: Might and Magic 4: Clouds of Xeen

Posted on 2009-04-30, 19:52

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by ripsaw8080

in DOSBox Games/Apps

in DOSBox Games/Apps

disk 1 disk 2

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