PSP DOSBox Build 24.9.2007 - DOS Emulator for PSP

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Originally Posted by Murdock

What did u do to get GUS working? Correct settings in DosBox? I haven't tried to do this, since I thought SoudBlaster emulation is okay.

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Unfortunately, I never actually got the GUS to work. I don't actually have any old skool DOS games to see if it is a problem unique to the demo or if it is a problem with GUS in general. I should get a hold of some other demos/games and see if the GUS works with those. Can someone try GUS sound with commander keen or jazz jackrabbit?

I modified dosbox.conf to turn off soundblaster emulation completely, and then tried a bunch of different values for the GUS base address, irq, and dma. None of these changes had any effect. The GUS sound card was just never recognized by the program. I'm starting to wonder if GUS is implemented in the psp port. :confused:

I just remember from back in the DOS days, games would have lower system requirements when using the GUS because the processor on the card itself did more work than the SB. I have no idea if this would translate to speed gains in the emulator setting or not.

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Originally Posted by [hamster]

Unfortunately, I never actually got the GUS to work..

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The notes in dosbox.conf mention midi patch files needed for GUS
should be put in the c:\ULTRASND folder. So,
it looks like GUS would only work for game versions that
include the needed MIDI's.

If you're looking for performance improvement , try dropping sample rates,
& disable the OPL mixer.
Also, try the other soundblasters . Some may work better than
others for different games

Anyone tried Jazz Jackrabbit?:D

Yes, i said in previous postings. I play Jazz Jackrabbit (fullversion) on my psp with psp dosbox. It runs very well. Only, you must set up the gfx to lower (386 pc).

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Originally Posted by aTomIC

... Only, you must set up the gfx to lower (386 pc).

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hey, that sounds like a handy option - do you have the
config variable=value
setting to enable 386 gfx?

also, dos navigator's really useful, but
it spawns a heap of 2k .swp files in the /dn folder.
Is it ok just to del *.swp during autoexec?

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Originally Posted by dangee

The notes in dosbox.conf mention midi patch files needed for GUS
should be put in the c:\ULTRASND folder. So,
it looks like GUS would only work for game versions that include the needed MIDI's.

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This is correct, but the dosbox.conf file used by the PC version says the same thing. However, the .pat files are not needed for GUS sound output. At any rate, I downloaded a set of GUS .pat files, placed them in the appropriate directory on the psp, and GUS sound still didn't work.

I'm starting to think that the GUS is not emulated in the psp version, because even if gus=true in dosbox.conf, the SET ULTRASND variable is not called during bootup. I manually inserted "SET ULTRASND=240,3,3,5,5" at the end of dosbox.conf. After booting with this file, programs will recognize a GUS at the address and load appropriately, but will not actually play any sound.

I don't really want to bother CrazyC, the author of the port, but I'm dying to know if GUS _should_ work! :D

Nice work,[hamster].
I couldnt get GUS working,& it sounded like Murdock had no joy
with it either.
Your experiments suggests a bug,or that for some reason GUS
emulation isnt possible on the PSP. Either way I don't
think it'd be out of order to post a bug report to CrazyC, with
the details of the setups you tried. It may take a while to climb
the top of the todo list tho!

I'd really like to see a DosboxPSP pre-boot menu (like recovery in
CFWs) to select one of up to ten .conf files from /DOSBOX

Wow I just got Betrayal at Krondor working! Very nice!
There's no sound though, gotta figure out how to get that working... but still very cool!

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Originally Posted by TheFoil

Wow I just got Betrayal at Krondor working! Very nice!
There's no sound though, gotta figure out how to get that working... but still very cool!

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I don't understand why I've problems with original psp inputs. Directional button seems to work only if I press various times and not always... like a conflict I would say...

I've not modified original conf and ini file.

And what about sound a little disturbed?

Dune 1 is playable and somewhat smooth as long as you some frameskip.

Master of orion works but is to slow to play:(