DDRAWEX.DLL memory access violations

[ppw0]

Hello,

I've installed SoftGPU in a 9x virtual machine in QEMU and I keep getting DDRAWEX.DLL memory access violations and WINED3D.DLL illegal operations when I open certain applications. The installer would also complain that "No working PCI bus was found", but the PCI bus was properly installed and there were no remaining yellow exclamation marks in Device Manager. Is this because of a lack of 3D support for QEMU?

[Torinde]

I think release 0.5 supports that via QEMU-3dfx?

Also related:

• #13

[ppw0]

I don't know, I haven't tried the latest release. Does it require patching QEMU?

[JHRobotics]

Patching QEMU isn't required, but all acceleration is software only then.

Make also sure you have right VGA adapter (-vga std). QEMU also has sometimes problems when emulating some advanced instructions. Try to set -cpu pentium3 when you have strange invalid memory access errors. Full commands, that I'm using to run QEMU are here:

https://github.com/JHRobotics/softgpu/issues/63#issuecomment-2022677497

[ppw0]

Turned on both "-vga std" and "-cpu pentium3" and same issues. (Using v0.5.2024.29-alpha2 now.)

Addendum: Following the exact full command that you posted instead just causes the application to come to a halt, without any error messages.

[ppw0]

Here's an example of DDRAWEX.DLL memory access violation:

And here's the "no working PCI bus found" message:

And here's the command line I'm using:

qemu-system-i386 \ 
-bios seabios-nopnp.bin \
-nodefaults \
-rtc base=localtime \
-display sdl,grab-mod=rctrl \
-M pc,accel=kvm,hpet=off,usb=off \
-cpu pentium3 \
-m 1024 \
-vga std \
-device lsi \
-drive if=floppy \
-drive id=win98,if=none,file=win98.qcow2 -device scsi-hd,drive=win98 \
-cdrom softgpu-0.5.2024.29.iso