Re: better Sound Blaster support

Posted on 2004-01-26, 22:32

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by Srecko

in DOSBox Development

in DOSBox Development

Don't bother. Without format specs we can't go anywhere. Best thing at the moment is to route DSP commands for 2/3-bit ADPCM to conversion function for 4-bit ADPCM but this gives distorted sound. Duke Nukem 2 gives up after trying to play sound if that's not done.

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Re: CVS Builds (every 2nd day)

Posted on 2004-01-26, 22:09

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by Srecko

in DOSBox Development

in DOSBox Development

Checked sourceforge's status page recently. They moved cvs services to a new server. Anonymous cvs isn't synced yet with developer cvs. In fact, it currently contains data more than a week old.

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Re: Directory Read Error and "Not Enough Memory" Error

Posted on 2004-01-26, 16:16

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by Srecko

in DOSBox General

in DOSBox General

ds:0002 is part of PSP. Note from dosbox's source about that word: " Segment of first byte beyond memory allocated or program " game will run If line 342 in dos_execute.cpp is changed to, for example: SetupPSP(pspseg,memsize+8,envseg); So, 'memsize' value is too small and game thinks that memory is …

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Re: Command and Conquer Demos and Descent Errors (VMM Errors)

Posted on 2004-01-25, 22:42

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by Srecko

in DOSBox Games/Apps

in DOSBox Games/Apps

Latest I could get off sourceforge (they have problems currently). Windows XP SP1. Try updating SDL.dll

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Re: Command and Conquer Demos and Descent Errors (VMM Errors)

Posted on 2004-01-25, 21:03

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by Srecko

in DOSBox Games/Apps

in DOSBox Games/Apps

My C&C works (full version). Descent also runs. Both games are patched to last version (but C&C uses Dos4gw 1.97).

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Digitrakker 3.2 - keyboard bug

Posted on 2004-01-25, 14:27

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by Srecko

in DOSBox Games/Apps

in DOSBox Games/Apps

Digitrakker 3.2 doesn't run with current version of Dosbox. problematic part of code does following: 0xF3 is written to port 60. (this should add 0xfa scancode to keyboard buffer) Shortly after, it reads from port 60 and expects to get scancode 0xfa. but dosbox doesn't return same code, it returns …

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Re: Crusader-No Regret: Running out of ideas...

Posted on 2004-01-24, 11:44

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by Srecko

in DOSBox Games/Apps

in DOSBox Games/Apps

I've measured how many cpu cycles it takes from the counter at 0F8F: 0040 intialization to counter test in dependepce to dosbox's cpu_cycles: Dosbox cycles...................cycles length 600.................................620,000 4050..............................4,2 million 8500 …

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Re: faster!

Posted on 2004-01-23, 11:46

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by Srecko

in DOSBox General

in DOSBox General

Wait for the next version (very soon). It'll have Gravis Ultrasound support which works with IT. It IS faster because mixing is performed in dosbox routines, while with SoundBlaster driver in mixing is performed in an emulated x86 CPU and is much slower. But IT works with vdmsound as well so you can …

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Re: better Sound Blaster support

Posted on 2004-01-22, 23:21

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by Srecko

in DOSBox Development

in DOSBox Development

OT: Anyone knows format specs for 2-bit and 3-bit Creative ADPCM format ? (or conversion-to-PCM routines?) Formats are used in Duke Nukem 2 with SB. I could find something only for 4-bit ADPCM which is already implemented in DosBox.

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Re: CVS Improvements for Lemmings2

Posted on 2004-01-22, 20:31

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by Srecko

in DOSBox Development

in DOSBox Development

Hmm, "F14" ("F14 Fleet defender") might suffer from the same problem (uses EMS). If I configure game to use soundblaster pro for both sound and music, it plays digitized music in the menu. Sound (music) slowly becomes corrupted, as if something owerwrites memory blocks in which sound data is stored …

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Re: DOSBox and Xargon

Posted on 2004-01-22, 12:33

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by Srecko

in DOSBox General

in DOSBox General

Jill of the Jungle and Xargon. I also thought that this was solved recently but it wasn't.

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Re: MT-32 Emulator and DOSBox Problems

Posted on 2004-01-22, 12:27

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by Srecko

in MT-32 General

in MT-32 General

Dosbox doesn't emulate MPU-401's intelligent mode. Sound Blaster cards didn't support this either, only Roland's MPU. Few months ago I was debugging a demo made by group TPC. Demo was using some strange MPU-401 commands. Then I googled a bit and learned about intelligent mode. I couldn't find manual …

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Re: MT-32 Emulator and DOSBox Problems

Posted on 2004-01-21, 11:32

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by Srecko

in MT-32 General

in MT-32 General

canadacow, please test dosbox version of emulator with The Lost vikings and Raiden. Both crash dosbox at some point, Raiden during the intro and Lost Vikings right after intro is played. It doesn't happen when mt32 is not selected. This was also problem in previous versions of mt32 emu.

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Re: Ghostbusters 2 unstuck with debug

Posted on 2004-01-20, 18:32

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by Srecko

in DOSBox Games/Apps

in DOSBox Games/Apps

No, it uses sound blaster for digtized sound even if pc speaker is used for the rest. At least in my version. If I disable sblaster in dosbox.conf game doesn't hang. Unfortunately, I couldn't get digitized sound in DOS, so I can't even check if it runs properly there. Btw., to get it working …

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Re: Ghostbusters 2 unstuck with debug

Posted on 2004-01-20, 16:20

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by Srecko

in DOSBox Games/Apps

in DOSBox Games/Apps

Loop seems wrong. Instruction above it moves data from 17A8:3E95 to CX. That place in memory is set to 1 while sound is playing and when sound blaster runs IRQ, it's set to 0. CX is pushed at the beginning and popped at the end of interrupt, with a value 1 (i.e it is unchanged). Then interrupt ends …

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Re: Can't run the install.exe of Amberstar

Posted on 2004-01-19, 11:25

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by Srecko

in DOSBox General

in DOSBox General

Looks like you will have to use system with DOS and FAT16 partition to install this because Dosbox doesn't emulate hard disk.

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Re: Crashes with dosbox.conf

Posted on 2004-01-09, 13:16

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by Srecko

in DOSBox Development

in DOSBox Development

In my experience, most common crash reason is when cpu core finishes it's job with callback number greater than CB_MAX for some reason. "Normal Loop" then tries to execute callback function from random address and crashes. e.g. Digitrakker has this behavior.

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Re: games with num lock key

Posted on 2004-01-09, 01:41

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by Srecko

in DOSBox Games/Apps

in DOSBox Games/Apps

It helps! Jagged Alliance and Xargon (escape key in-game).

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Re: some testing with current CVS

Posted on 2003-12-30, 23:40

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by Srecko

in DOSBox Development

in DOSBox Development

mpetty, Horde defaults to GUS. If you disable GUS in the dosbox config file, game will run with sound blaster and work.

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Re: Error message

Posted on 2003-12-28, 23:17

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by Srecko

in DOSBox Games/Apps

in DOSBox Games/Apps

Try to compile cvs as a debug version or get a cvs debug build somewhere, it might work because some other games that use paging work with current cvs (and some don't).

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