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Ever since I changed to using Windows 10 in my VMware Fusion virtual machine, I've struggled with a fair bit of latency and audio problems when using the standard HDAudio device. Changing the buffer time didn't make a huge difference, but now I've found a way to install the VMaudio driver and revert to the old es1371 audio device so I can lower the latency. This makes my Windows 10 run like my Windows 7 VM latency-wise, and I figured everyone else could use this info, so here goes (note: This worked for me, but I'm not responsible if your audio breaks):NB: Whenever something is between quotes, assume that everything between the quotes has to be copied or executed. If there are quotes within the quotes, you do have to include those when you copy the text.1. While it's shut down and VMware fusion is closed, back up your virtual machine by storing a copy of your .vmwarevm package somewhere else, just in case you need to revert later.2. Boot up your virtual machine.3. Go to the menu bar > Virtual Machine >Reinstall VMware Tools, and dismiss the auto-play notification or the setup dialog if they appear.4. Open up a command prompt (windows key+r, then type "cmd")5. I like to type "D:" to get to my cd-drive, but you can also type the path directly. Run this command on the drive your VMware tools install is mounted:"setup64 /a"press enter.6. Follow the instructions on screen, and extract to a folder of your choosing.7. Using Windows explorer, go to the directory where you extracted the VMware tools. Within this directory navigate to the following path:"VMware\VMware Tools\VMware\Drivers\audio\Vista"8. Locate the file "vmaudio.inf", and press shift+f10 (or right click) on it.9. Find "install" in the context menu, and press enter on it. Follow the on screen instructions.10. Shut down your virtual machine and quit VMware fusion. Now it's time to edit your .vmx file11. In the mac finder, locate your .vmwarevm package, and bring up the context menu. Navigate to "show package contents".12. Locate your ".vmx" file.13. Bring up the context menu, find "open with" and open it in your favorite text editor. Text edit will do.14. You have to change 2 lines in this file. If the line "sound.virtualDev = "hdaudio"" is present, change it to "sound.virtualDev = "es1371""Next, add this line if it is not already present, and experiment with the buffer length. I find that 30 is a good number: pciSound.playBuffer = "30""Finally, if you already tweaked the sound.bufferTime parameter with the new hdaudio device, I'm not sure it makes a difference or not. You can possibly leave it there, but I deleted it. Then save your .vmx-file15. Go into fusion, and boot your machine. Hopefully it should now be much more responsive.
Creative Sound Blaster Pci Es1371 Drivers For Mac
The only true sound blaster hardware are the cards that plug into legacy ISA slots. The later sound blaster cards, and equivalents, for PCI bus all require DOS drivers to achieve legacy sound blaster compatibility.
As far as I can determine, the SB DOS drivers are really sound blaster emulators, but still require hardware support from the sound card. In particular, a SB PCI card has to intercept access to legacy sound blaster I/O ports (eg 0x220) and produce interrupts. The interrupt handler is code in the DOS emulator, which then determines what I/O port operation the game has requested, and then controls the actual sound hardware accordingly.
BIOS settings for legacy sound enable/disable the hardware trapping of legacy sound blaster I/O ports; where the hardware trap produces interrupts. In modern processors, I think interrupt latency could be a issue. The processor may execute too many instructions after I/O port operation, before interrupt processing occurs. Maybe that's why this BIOS setting no longer seems to exist with modern PCs. Does legacy sound blaster emulation in DOS with sound blaster PCI cards still work reliably?
PCI sound cards and Chipsets from various manufacturers... includes discussion regarding the necessary chipset support for the PCI sound blaster cards to work. Perhaps speed does not yet become an issue with the fastest boards that still have such support.
The sound blaster PCI cards produce PCI SERR or IRQ to support legacy SB emulation with DOS drivers. In the case of SERR, it routes to processor NMI, but modern motherboards no longer route PCI SERR to processor NMI. There will be no way for SB DOS drivers to function properly in configurations requiring SERR/NMI, even with working sound card hardware. If card uses IRQ for legacy support instead, then emulation should still work in theory. Interrupt latency may not be a problem after all, assuming the processor recognizes interrupts before the hardware completes (fake SB) I/O port accesses.
On sound blasters or equivalent, I think some cards use the ES1371 chip. According to the datasheet circulating on the internet, the chip has an AC97 codec. That implies the SB DOS drivers for cards with ES1371 already emulate SB using an underlying AC97 codec. So the solution may be to find a way to get this emulation to work by substituting with software, the hardware I/O port trapping feature of the card. 2ff7e9595c
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