Partially working on Acer A0751h

Baron-von-Riedesel / VSBHDA

Sound Blaster emulation for DOS

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Partially working on Acer A0751h #1

Open hjnijlunsing opened 1 year ago

hjnijlunsing commented 1 year ago

I couldn't get the original SBEMUb3 to work on my Acer A0751h; however this forks runs and I am able to run Epic Pinball with sound!

However two interesting observations:

It only works if I ENABLE my Network Boot in my BIOS; (to me this is really weird...); my only guess is that enabling this option ROM also initializes the Sound Card. MPXPlay works fine without this change.
All tables work with sound EXCEPT Android (again to me this is also weird as I would expect all the tables would behave identically)

Thanks for your work!

Baron-von-Riedesel commented 12 months ago

I couldn't get the original SBEMUb3 to work on my Acer A0751h; however this forks runs and ...

Is the sound HW of type "Intel HDA"?

It only works if I ENABLE my Network Boot in my BIOS; [...] MPXPlay works fine without this change.

Really bizarre ... if MPXPlay works, VSBHDA (and SBEMU) should work as well.

The main difference of VSBHDA/SBEMU compared with MPXPlay is that the latter doesn't use the sound hardware IRQ ( it usually uses the PIT timer instead ). Perhaps the network boot ROM changes the IRQ of the sound device? Perhaps comparing the status of the PCI devices with/without that ROM might give a clue...

hjnijlunsing commented 12 months ago

Yes the sound HW is of type "Intel HDA", with network boot disabled VSBHDA runs and detects sound card, however I do not get any sound when starting Epic Pinball.

If you are able to give me the commands to compare I would be happy to try it out!

Baron-von-Riedesel commented 12 months ago

If you are able to give me the commands to compare I would be happy to try it out!

There exist a lot of tools that scan the PCI devices ( one is attached ). I don't know if it will help to find the problem, though.

pciinfo.zip

hjnijlunsing commented 12 months ago

Runnning PCIINFO hangs the system ;-)

However before it hangs I get for the HDA Device with Network Boot Enabled I get: 0 1b 0 4 3 0 7 8086/811b 10 multimedia controller (HDA)

Without network boot: 0 1b 0 4 3 0 7 8086/811b EMPTY multimedia controller (HDA)

Thus indeed you are right; enabling network boot gives IRQ 10 to the HDA device... Weird...

hjnijlunsing commented 7 months ago

Btw, solved the first level of Epic pinball which was playing without sound for first level. From this thread I noticed same behaviour: https://www.vogons.org/viewtopic.php?t=14822, given the newer revision of Epic Pinball it now also works with VSBHDA.