VOGONS

Search

Common searches

Search results

Display options

Display options

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-28, 09:07

Thanks @crazii for developing SBEMU and keeping it open source. Haven't seen a compatibility report for Nvidia chipsets so far so here's mine: An Asus X50GL (F5GL) laptop with MCP79MVL (Geforce 8200M G mGPU) and a C2D T7500 2.2GHz. SBEMU /SCL detects it as: Intel HDA: NVidia MCP79 (10DE0AC0) -> …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-26, 15:59

Something I thought about last night when laying in bed is a bit convoluted, but I wonder if it would work. Basically my idea is could this be used to to emulate a soundcard that the dos version of dosbox-x can use, and then using dosbox-x run windows 3.1 and have working sound for that? or hell …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-26, 15:58

I have a Vt8233 in an HP T5520 thin client. I don't get any of the DMA conflict errors, but otherwise similar - MPXPlay works perfectly, but with SBEMU beta 2 no sound at all and with the VT8233FIX build, horribly slow and distorted sound for music and slightly less so for digital. This is for real …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-26, 02:01

Okay, I didn't have much time in these weeks, but I kept testing the program even though I didn't give a feedback. Now, on my computer (Dell Inspiron 15, Intel HDA: Intel PCH (Panther Point) (80861E20) -> Realtek (10EC0282) (max 19 2kHz/24bit/8ch)), I didn't see any improvement since 3 or 4 test …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-26, 01:57

crazii - where are you located? If in the USA, I would be willing to give and ship you some hardware so you could do debugging on your end. Haven't read the whole thread. What hardware are you needing for debugging? No, I'm not in US. I can buy the hardware from my local online flea market, but I …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-26, 01:54

Tested SBEMU today on an Acer Aspire One 722 mini-laptop. AMD C60 APU, with MSDOS 6.22, SBEMU beta2 and JEMMEX 5.84. It recognizes and enables sound (both OPL3 and SB emulation) as Intel HDA However, no sound works under DOS at all. Neither OPL nor SB emulation, in any game I tried. No errors, just …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-25, 21:39

Interesting suggestion but I'm not sure yet how/whether it could be done, probably another io trapping of speaker port. You have to trap port 61h and PIT channel 2, so corresponding ports and behavior too. All trapped ports most likely should be passed to the real ports too. More info can be found …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-25, 21:35

The power state changed from 0x33 to 0x30 with the new version, but still no sound without running HDAplay first. Cold boot 0/ 16/0F05/0 - power state control=0x433 SBEMU only old 0/ 16/0F05/0 - power state control=0x33 SBEMU only new 0/ 16/0F05/0 - power state control=0x30 HDAplay + SBEMU 0/ 16/ …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-25, 21:35

It's mostly possible that be interrupt that causing the problem. the only difference between mpxplay and sbemu is that sbemu enables interrupt. all the emulate SB's virtual IRQ & DMA is handled in the sound card interrupt. if interrupt is not working, games will report IRQ/DMA problem. I tried …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-25, 04:11

Maybe some of his changes would worth being incorporated into the main project, becuase of its stability, also, an unloader would be very VERY useful for SBEMU, because once any other program touches the HDA, SBEMU should be reloaded, and while Japheth's simplified version can be unloaded an …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-25, 03:17

I just tested both SBEMU_VT8233Fix and Japhet's attached version. Good new is that Wolf 3D SFX works now, both versions, but behaves differently in Dynablaster. With old and SBEMU_VT8233Fix Dynablaster starts without sound, with Japhet's it hangs before setting GFX mode. And it hangs in really hard …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-25, 03:12

Test report, Realtek ALC883 @ nForce 430a (MCP61P) MS-DOS 6.22 SBEMU ver.1.0b2 Output: Found sound card: Intel HDA Sound card IRQ conflict, abort. You need disable some onboard devices to release IRQ, or try /i5 option, as noted in the first post. I will add more information to the error message in …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-24, 22:15

hdaplay indeed sets the power state, and probably sbemu should do as well: sc_inthd.c static int parse_output_path(struct intelhd_card_s *card,struct hda_gnode *node, int dac_idx) { int i, err; struct hda_gnode *child; if(node->checked) return 0; #if 1 /* set power state, seems necessary on (some?) …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-24, 15:47

>Baron von Riedesel Thx, I will try at night. >crazii In my case Doom plays fine, SFX and music (SB Audigy). I could try redirect stderr to file but I doubt it will save more than just a blank file as it hangs and leave data in cache/internal buffers... Yes, my case was the same before the fix, …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-24, 15:19

Test report, Realtek ALC888 @ VT8237A MS-DOS 6.22 SBEMU ver.1.0b2 Output: DEVICE=JEMMEX.EXE JEMMEX v5.84 [02/06/23] System memory found at e000-efff, region might be in use JemmEx loaded JLOAD QPIEMU.DLL JLoad: QPIEMU.DLL loaded successfully. HDPMI32I -r -x HDPMI32 now resident Internal stack …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-24, 14:14

I tried SBEMU 1.0 beta 2b with Wolfenstein 3D. It started nicely with music but as I first shot the SFX sound scattered the screen by some unreadable error, speaker shortly beep and system hanged... Quake DOS version works fine. I had the same crash/freeze (sometimes with errors) on my VT2C686 …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-23, 07:33

Based on the symptom that SBEMU can work with HDAplay without any modification, I think MPXPlay may miss some compatibility setup steps for some chipsets. Just checked the MPXPlay's source code, the link stream register is written by MPXPlay already, but involves parsing HDA DAC nodes, not just a …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-22, 19:12

I'm not sure if this will help but here's the data sheet for the VIA vt8235 & vt8237r+ southbridges. as far as i'm aware these chipsets all carry some form of AC'97 codec, in which MPXplay play's fine in "VIA" mode on my build with a VIA chipset. it's an p4m890 with vt8237r+ chipset. sbemu inits …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-19, 21:49

@stamasd: Please read my post again. I already wrote, MPXPlay plays nice on this one. But SBEMU not. So something is wrong (either with me or with SBEMU). And no, its not a HD codec, its oldstyle AC97. EDIT: Just saw on Wikipedia, there is a 8237"A" variant which indeed has HD-Audio instead of AC97 …

Re: SBEMU: Sound Blaster emulation on AC97

Posted on 2023-03-19, 07:11

Incredible work. Talk about saving the day. Absolutely fantastic stuff. Thought I'd make an account to share my experiences so far. Hardware: MSI MS5182 K6-2 475 512 MB RAM IDE-CF adapter IDE CD-ROM drive Sound Blaster Live Only tested on FreeDOS so far. I've noticed that the OPL is very quiet …

Page 9 of 29

Go to top of page Go to top of page
Close window
Close window