diff options
Diffstat (limited to 'docs/specs/standard-vga.txt')
| -rw-r--r-- | docs/specs/standard-vga.txt | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/docs/specs/standard-vga.txt b/docs/specs/standard-vga.txt index 8a4c1e93cd..f82773e677 100644 --- a/docs/specs/standard-vga.txt +++ b/docs/specs/standard-vga.txt @@ -5,9 +5,10 @@ QEMU Standard VGA Exists in two variants, for isa and pci. command line switches: - -vga std [ picks isa for -M isapc, otherwise pci ] - -device VGA [ pci variant ] - -device isa-vga [ isa variant ] + -vga std [ picks isa for -M isapc, otherwise pci ] + -device VGA [ pci variant ] + -device isa-vga [ isa variant ] + -device secondary-vga [ legacy-free pci variant ] PCI spec @@ -31,9 +32,15 @@ PCI ROM Region: Holds the vgabios (qemu 0.14+). +The legacy-free variant has no ROM and has PCI_CLASS_DISPLAY_OTHER +instead of PCI_CLASS_DISPLAY_VGA. + + IO ports used ------------- +Doesn't apply to the legacy-free pci variant, use the MMIO bar instead. + 03c0 - 03df : standard vga ports 01ce : bochs vbe interface index port 01cf : bochs vbe interface data port (x86 only) |