On 10/22/12 21:43, Hervé Poussineau wrote: > Hello, > > I'm trying to add support for a S3 PCI VGA card to QEMU. It currently > works on some non-x86 systems. > However, on x86, it seems that the card is correctly detected, but there > is no display at all; I think it is due to bad framebuffer address > detection.
I'd tend to suspect vgabios issues. > QEMU: > Memory: 000A0000-000AFFFF > Memory: 000B0000-000BFFFF > I/O: 03B0-03BB > I/O: 03C0-03DF > Memory: FD000000-FDFFFFFF (BAR0) > Memory: 000C0000-000CFFFF (rom file?) > Memory: 04000000-04007FFF (???) Can you try lspci in a linux guest? Do you have a git tree somewhere? > S3 card have a BAR0 of size 0x1000000 (16MB) for the framebuffer, and > ROM is created with bochs vgabios. I'd use seabios instead, but bochs vga should work too. Of course the PCI IDs must be correct otherwise seabios ignores the rom. > QEMU is launched with -m pc -device s3-trio. /me suggests to add '-vga none' so you don't end up with both cirrus & s3 cheers, Gerd
