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Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2024-05-05, 03:27

Here's early test edition of SBEMU with new DPMI (let's call it 1.1-alpha1 release candidate 1 for now), which includes the new DPMI I'm working intensively on for more than 2 months. It's been tested by veelstekel for couple of days but now he is temporarily unavailable, so I post the zip here for …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2024-05-03, 23:11

I'm curious as to why these changes aren't being upstreamed; seems like the feature-sets of these forks are diverging significantly. The existence of a fork of SBEMU, namely VSBHDA is a great thing. Having two experts working on emulating SB on "modern" systems is just fantastic. Accordingly, …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2024-04-28, 12:30

Thanks for the testing. It's also possible that the bug always exist even for -Os, but didn't expose after some code changes that affect it. - If you read from (or write with the same value to) a mem address twice, it's very likely that compiler will optimize the 2nd even using -Os, especially in a …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2024-04-27, 23:46

I agree with you over preference for IRQ5 over 7, and for the same reason. I really do not understand why or how it became 'defaults' at 7. That only makes sense if you are doing dumb stuff with the parallel port, or have it disabled all together. (So that you can do stuff with say a network card …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2024-04-27, 13:02

Here's build with -Os instead of O2 and LTO removed, can you test it? sbemu_Os_NoLTO.zip If it works then there's more investigation needed since for bugs from different build configs. EDIT: another fix trying to fix problem introduced by O2 / LTO: sbemu_mmio_volatile.zip Thanks so much, crazii for …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2024-04-27, 11:27

EDIT: does the 11-Feb build work? there seems no big changes from 09-Feb. After that the O2 and LTO is on, probably causing problems, but are fixed on the 2024.02.18_00-37. EDIT2: I see that SETPVI is used. you can try again without it. SETPVI may be needed by VSBHDA but not needed by SEBEMU, and …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2024-04-27, 01:36

Can you test this temporary build to see if it works? And if it doesn't, you can try /P0 (zero not oh) option to disable MPU port trap to confirm again. SBEMU_fix1.zip EDIT: I also tried to fix the IRQ assignment issue, by just changing the PCI configuration space register only, you can also test …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2024-04-26, 01:06

I added an extra zero there... whoops... but still, the actual spec DOES top out at about the top end of bat hearing. 96khz/24bit, is the minimum requirement for "High definition audio". At that kind of sample rate, having SSMD instructions in play might be kinda nice to have. :P 96khz / 24 bit is …

Re: FastDoom. A new Doom port for DOS, optimized to be as fast as possible for 386/486 personal computers!

Posted on 2024-04-24, 00:03

Did you say that you've gotten 0.9.9c working in SBEMU / VSBHDA? I've tried all manner of settings for both programs, and also in FDSETUP.EXE, and always get a "Failed to detect music card -1" and the same "Failed to detect digital sound card -1" message, and FDOOM refuses to run; the only way to …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2024-04-22, 23:48

Also, I'm experiencing a freeze on all the userbuilds of SBEMU past February or so (since General Midi at port 0x330 was added). The SBEMU program detects all the usual settings, and then just freezes the system. All versions (even back to the first betas posted in Feb / March 2023) previously …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2024-04-22, 23:39

SBAITSO.ZIP Has anyone successfully gotten DR. SBAITSO to work with either SBEMU or VSBHDA? I'm getting either "can't detect Soundblaster settings" or an "Interrupt error" from the program. I think the problem is related to the old 1991 BLASTER.DRV file which it uses, and I can find no updated …

Re: ASUS eeePC 701 / 4G FSB Adjustment Utility

Posted on 2024-04-14, 02:29

in DOS
Yes, i945 chipset and GMA950 graphics / vbios on Acer Aspire One. Perhaps GMA900 vbios can be hacked to do native 1:1 instead of stretching by default. I looked and can see that no one previously has released such a utility / hack for the EEE701.

Re: ASUS eeePC 701 / 4G FSB Adjustment Utility

Posted on 2024-04-13, 08:25

in DOS
Thanks for confirming 800x480 display! I found a way to map 1:1 native pixel mode, thereby disabline stretching on my Acer Aspire One, through a custom video BIOS driver from Intel, but of course I don't think that will work for the Eee701. And, it takes up about 64kb of low DOS memory to do so, as …

Re: ASUS eeePC 701 / 4G FSB Adjustment Utility

Posted on 2024-04-13, 06:58

in DOS
Hope it is useful, that native 640x480 LCD really does look neat playing some old titles. Everything I've read says that the screen on the eee701 is in fact 800x480, not 640x480. Is the screen 4:3 native or is it 16:9? Clarify if you can. I didn't think any netbooks had a 4:3 screen. I have an old …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2024-03-29, 01:35

I have also problem with very low output volume (maybe 10x lower than SBEMU or MPXplay) on my SB Audigy. I though it was just a specific issue of mixer setting of my soundcard type... Did you see this posted on Dos Ain't Dead, posted by Japheth? It's not "halved", it's using kind of a "geometric …

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