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Re: Proper way to detect DOSBox from a running program?

Posted on 2012-07-25, 15:58

in DOSBox Development

in DOSBox Development

Use the most recent build from EmuCR labeled as "DOSBox SVN rXXXX" for testing; other builds are probably not vanilla SVN source. Alt-Pause is the correct key to break into the debugger in a debug build; however, it may not work if DOSBox has become unresponsive with the problem you describe. Ensure …

Re: Proper way to detect DOSBox from a running program?

Posted on 2012-07-25, 15:27

in DOSBox Development

in DOSBox Development

Have you tried your program on a DOSBox build of straight SVN source? I ask because a change was made to the HLT instruction in revision 3683 that could possibly apply to the problem you describe. If HLT is indeed the source of the problem, you could simply avoid using it.

Re: Proper way to detect DOSBox from a running program?

Posted on 2012-07-25, 06:55

in DOSBox Development

in DOSBox Development

I'm not aware of any "official" means of identification, and interrupt function idiosyncrasies could be subject to change. An identifier that seems reliable for all machine types is the BIOS copyright and version strings at F000:E000. Searching the 128 bytes starting from that address for the string …

Re: Rally Championships (cd edition) error - first post updated

Posted on 2012-07-24, 19:19

in DOSBox Games/Apps

in DOSBox Games/Apps

The game has to be installed, but the method of installation is not obvious. Also, there is a bug in one of the game executables that is likely to occur in DOSBox, but it has a workaround. First, in DOSBox copy COMMAND.COM from the Z: drive to the root of your emulated C: drive. This is necessary …

Re: Star Crusader (1994) - crash on gameplay launch

Posted on 2012-07-24, 17:32

in DOSBox Games/Apps

in DOSBox Games/Apps

For debug builds there is a [log] section in the conf with a logfile= setting. Change that to logfile=c:\dosbox\logfile.txt, or whatever path and filename you choose. Yes, I am able to start missions and simulations without a problem. The flight portion of the game seems to work fine. I read your …

Re: Star Crusader (1994) - crash on gameplay launch

Posted on 2012-07-24, 16:21

in DOSBox Games/Apps

in DOSBox Games/Apps

Tried the floppy version with separately installed speech pak, and the cdrom version, both are working fine here in DOSBox 0.74 with default settings except cycles=8000. For the cdrom installation I chose to install all optional files to HD, and for both versions I configured the game for SBPro …

Re: Links: the Challenge CD Install

Posted on 2012-07-22, 10:25

in DOSBox Games/Apps

in DOSBox Games/Apps

The installer creates a file on the install target HD as a disk test. The filename is comprised entirely of 0xfe characters that are legal (through function calls) in real DOS, but are considered illegal by DOSBox. The installer appears to work OK if 0xfe is added to the list of allowed characters …

Re: QBasic MPU-401 and OPL-3 addresses (newbie)

Posted on 2012-07-20, 05:15

in DOSBox General

in DOSBox General

Under 0.74 or 0.73, i tried use mixer command but it doesn't shows DISNEY channel, however, it does show DISNEY on dosbox 0.72, using the same config file. A change was made to disney.cpp in revision 3180 causing the mixer object to exist only while the Disney device is active. This means that the …

Re: QBasic MPU-401 and OPL-3 addresses (newbie)

Posted on 2012-07-19, 17:00

in DOSBox General

in DOSBox General

Sounds like you should change the mpu401=intelligent setting to mpu401=uart, or write command 0x3f to switch to UART mode (as games do), because DOSBox emulates an MPU-401 in intelligent mode by default.

Re: QBasic MPU-401 and OPL-3 addresses (newbie)

Posted on 2012-07-19, 16:07

in DOSBox General

in DOSBox General

If you're using official DOSBox, the devices are at the ports I listed and the ports can't be changed, end of story. If you're using unofficial DOSBox, anything can happen. Are you sure you're not just mistaking the emulated Disney/Covox device for the emulated MPU-401?

Re: QBasic MPU-401 and OPL-3 addresses (newbie)

Posted on 2012-07-19, 15:32

in DOSBox General

in DOSBox General

The only way to change the ports is to change the DOSBox source code. MPU-401 = 0x330 Disney/Covox = 0x378 OPL2 = 0x388 - 0x389 OPL3 = 0x388 - 0x38B Most games have no trouble using the emulated devices at these ports. Perhaps you are not seeing expected responses because you are making assumptions …

Re: Installing Jungle Strike from CD-ROM

Posted on 2012-07-19, 13:49

in DOSBox Games/Apps

in DOSBox Games/Apps

Actually, there is no "CD" parameter, and invalid parameters make the game use its defaults (non-full install, normal movies), which is equivalent to changing the line in the batch file to just "@D:\JUNGLE". The "HD" parameter tells the game to look for its .DAT file on the hard disk, and …

Re: Mag-Racer (1997) - Crash on Launch

Posted on 2012-07-18, 01:22

in DOSBox Games/Apps

in DOSBox Games/Apps

The system appears to be stable when the game exits with an error, so there is no "crash" per se. Anyway, I don't get the error you mentioned if MAGRACER.CFG is deleted when the sound config is changed, which is why I mentioned deleting both .CFG files.

Re: Mag-Racer (1997) - Crash on Launch

Posted on 2012-07-17, 21:54

in DOSBox Games/Apps

in DOSBox Games/Apps

Initializing the SB seems a bit iffy with this game, but it does work sometimes; might be sensitive to cycles. However, GUS has worked every time for me. I delete both .CFG files so it has no previous settings that might cause problems, run SOUNDSET.EXE to choose sound settings, then run MAG.EXE to …

Re: GT Racing 97 - Sound Setup

Posted on 2012-07-16, 15:45

in DOSBox Games/Apps

in DOSBox Games/Apps

I can use your cue with my bin and it causes the game to not recognize the disc as correct. Did you change the name of the BIN file in the cuesheet? Because it seems yours is named differently. When you say it doesn't "like" the cuesheet, what exactly happens?

Re: GT Racing 97 - Sound Setup

Posted on 2012-07-16, 14:59

in DOSBox Games/Apps

in DOSBox Games/Apps

If you're not going to heed the advice in the conf file that tells you to stick with the default of memsize=16 unless you have a good reason to do otherwise, at least always use the default when troubleshooting... The game has a number of CD-checks, and one of them is based on audio track start/stop …

Re: GT Racing 97 - Sound Setup

Posted on 2012-07-16, 13:56

in DOSBox Games/Apps

in DOSBox Games/Apps

Your cue differs from the one I have on the first audio track, I think due to how image tools handle pregap differently on mixed mode discs. I tried using your cue with my bin, but it seems to work just as well, at least for the purpose of the install program and configuring sound. Try again with …

Re: GT Racing 97 - Sound Setup

Posted on 2012-07-16, 13:20

in DOSBox Games/Apps

in DOSBox Games/Apps

The default for SB is IRQ 7, so why are you starting with 5? Do you have sbtype=sb16 or something else? Are you mounting a BIN/CUE with audio tracks? I mention the audio tracks, because the install program tries to play one as part of its audio test... It's working fine here in 0.74 with default …

Re: Colony Wars 2492

Posted on 2012-07-16, 02:03

in DOSBox Games/Apps

in DOSBox Games/Apps

Sounds like you may have a different version. The patch loader will only work with CW.EXE, 318,576 bytes, dated 6 March 1996, with a CRC32 of B4B4E9C0. However, it's quite possible the same issue exists in other versions. If you have a different version, and it does indeed have the same issue, you …

Re: Emergency Room

Posted on 2012-07-13, 20:04

in DOSBox Games/Apps

in DOSBox Games/Apps

The install program wants at least one clock tick to occur when it's reading blocks of data from the cdrom, but it sees the transfer as effectively instantaneous within the DOSBox emulation, so it kind of refuses to accept that and retries endlessly. The attached workaround program delays the block …

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