New build from this commit: https://github.com/thp/sbemu/commit/37f9be97c … c7a96d5986b263d

I trimmed it down to a few registers that I think matter, and left out the ones that probably don't affect operation.

Please let me know if this build still works on your machine (if yes, we can try trimming it down further, if no, we have to see which registers to add to make it work again).

Edit: The pitch issues might be related to overwriting the "PCM front DAC rate" register with the Win98 value. The new build might fix that.

dr.zeissler wrote on 2023-10-07, 20:46:

- SBL seems to be a bit slow paced on point https://www.pouet.net/prod.php?which=68187
- SBL sound good in "setup" in Duke3D center, right and left test sounds a bit weird and high-pitched.

seems to me that the sbemu.exe linked above is the one I had already?

made some more tests for SB-EMU in general. Please keep in mind that my machine is a FAST P4/2.24Ghz with AGP G550 32MB, so some games could perhaps have issues that are not SB-EMU related!

Very early dos-games/demos do make use of PC-SPK, would be nice to get a switch for routing the PC-SPK to the line-out too in order to have equal levels on playback and perhaps a better quality (e.g. budokan has effects on PC-SPK and music on FM)

Good/very good:
- FM/OPL only game > GreatCourts2 - works excellent , Adlib sounds very good
- FM/OPL only game > Lemmings - works excellent (use standard pc not high performance) music sounds good to me.

Issues:
- FM/OPL / PC-SPK > Budokan - works but sounds weird
- SB-Only > Pinballfanataies - does work but has this weird sweeping noise, not sb-emu's fault, it's also on every other sound-system/card on a fast machine, playback tempo to slow.
- FM/OPL and SB => Raptor - works but crackeling noises on SB, playback tempo to slow, not a big thing in the game because of fm-music.

Not working at all:
- Tyrian2k - refuses to start setup
- all these do not find the soundblaster https://www.pouet.net/groups.php?which=1405

more to come

The FM-Emulation is so damn nice on SB-Emu, to me it's more usefull than the SB-Emulation!

Its not the same, if it works then thp successfully narrowed down relevant registers. You can try it on C610 to make sure it doesnt break other AD1980 implementations.
All the emulation issues are down to SBEMU engine, last update was 7 months ago so it looks like work stalled.

My tests are with the latest sbemu-version that is linked above. Late Dosgames have a rather good compatibility with SBEMU. Latest version still has a slowed down playback on some games.

Working:
- Redneck Rampage
- Duke3D
- Quake1
- Hexen
- Heretic
- Doom1/2
- Blood
- Rampage

Not working:
- PinballDreams2 (Blackscreen)
- AlienBreedTowerAssault (JemmEX Issue)
- StrikeCommander (does not find the card, settings are correct)
- PowerSlave (Freeze after StartupScreen)
- RiseOfTheTriad (Hang on Startup)

Another build with even less registers, please test if this still outputs audio:

https://github.com/thp/sbemu/commit/5071dfe48 … 6e54ec0ac8e14d9

If this still works, that boils down to three registers.

Does not work anymore, no FM no SBL. Sorry 🙁

edit: loads fast, so no delay anymore.

Thanks for testing. Please bear with me while we're trial'n'erroring our way to the perfect set of registers...

Please test the next build and see if this restores audio again, based on https://github.com/thp/sbemu/commit/af2f663b1 … 249ee108bfea43f

still broken, sorry.

I’ll PM you - let’s figure that out and then publish the results instead of me spamming this thread by uploading a bunch of random builds 😀

at this point dr.zeissler should be able to arrive at right combination with ac97test alone, looks like 0x6 and 0xe are the difference? 😮

Hi

This sounds really interesting.

I have a Dell D400 with MS Dos 6.22 Installed. I am hoping this will allow me to use the onboard sound which naturally wasn't supported by Dell for MS Dos 6.22.

I am getting the attached error, is it just as simple as me finding this zip file and extracting?

Ta
Louis

It's easier to use a batchfile executed within the autoexec.bat
(please consider reading the readme.txt in the SBEMU package)

otherwise use my:
- config.sys
- autoexec.bat

please check your paths if they are identical. (C:/MSDOS or C:/DOS or something else)
if your emulated SB is not on IRQ7 (I7) please change it to IRQ5 (I5).

If this does not work for you please let me know.

dr.zeissler wrote on 2023-10-10, 15:45:

It's easier to use a batchfile executed within the autoexec.bat (please consider reading the readme.txt in the SBEMU package) […]
Show full quote

It's easier to use a batchfile executed within the autoexec.bat
(please consider reading the readme.txt in the SBEMU package)

otherwise use my:
- config.sys
- autoexec.bat

please check your paths if they are identical. (C:/MSDOS or C:/DOS or something else)
if your emulated SB is not on IRQ7 (I7) please change it to IRQ5 (I5).

If this does not work for you please let me know.

That's amazing thanks, working now.

I just need to think of a game small enough for a floppy now! 🙂 I know Lemmings isn't compatible, tried it anyway to see, but as expected it doesn't load.

Lemmings works on my setup. What version are you trying to load?

dr.zeissler wrote on 2023-10-10, 18:50:

Lemmings works on my setup. What version are you trying to load?

Hi

I think the original version. I read further up in this thread that it wasn't supported and generates a JemmEx error, which mine does.

Ta

I do a re-check.

dr.zeissler wrote on 2023-10-10, 20:21:

I do a re-check.

Thanks mate

ldare1000 wrote on 2023-10-10, 20:33:

dr.zeissler wrote on 2023-10-10, 20:21:

I do a re-check.

Thanks mate

Works just fine, no error on Lemmings. Please check Bios-Setting "TopOfTheBase" or "ExpansionRomErea", on my machines I use "ExpansionRomErea".

Thanks again for this great work @crazii and @thp!

I have been experimenting with this on a variety of ultraportable 4:3/5:4 LCD P3 and P-M laptops, since they are a heck of a lot smaller and lighter, and have much better quality TFT displays that earlier machines that have real SB-compatible audio onboard.

With my current test machine, a Dell Latitude x300, most standard games work great, with the exception of the following:

1) Prince of Persia 1 produces no audio at all
2) PacPC/MsPacPC and PC*Bert give errors about not being able to talk to the emulated SB
(https://www.jrok.com/games_orig.html)

Thanks!
- Alex

Has anyone else experienced similar errors?

In my tests, Dungeon Master claims to not detect the SB when started without command line options, but can use it just fine when invoked with the right switches to skip the questionaire.

For some games, forcing the option might be valid, such as that one.