Patchwork [v8,03/10] qemu-options.hx: mention retrace= VGA option

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Submitter Matthew Ogilvie
Date Dec. 16, 2012, 11:56 p.m.
Message ID <>
Download mbox | patch
Permalink /patch/206750/
State New
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Matthew Ogilvie - Dec. 16, 2012, 11:56 p.m.
The feature was added in commit cb5a7aa8c32141bb Sep 2008.
My description is based on "Better VGA retrace emulation (needed
for some DOS games/demos)" from

Signed-off-by: Matthew Ogilvie <>
 qemu-options.hx | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)


diff --git a/qemu-options.hx b/qemu-options.hx
index 231cc4f..c50f737 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1007,7 +1007,7 @@  DEF("vga", HAS_ARG, QEMU_OPTION_vga,
     "-vga [std|cirrus|vmware|qxl|xenfb|none]\n"
     "                select video card type\n", QEMU_ARCH_ALL)
-@item -vga @var{type}
+@item -vga @var{type}[,@var{prop}=@var{value}[,...]]
 @findex -vga
 Select type of VGA card to emulate. Valid values for @var{type} are
 @table @option
@@ -1032,6 +1032,12 @@  Recommended choice when using the spice protocol.
 @item none
 Disable VGA card.
 @end table
+Valid optional properties are
+@table @option
+@item retrace=dumb|precise
+Select dumb (default) or precise VGA retrace logic, useful for some
+DOS games/demos.
+@end table
 DEF("full-screen", 0, QEMU_OPTION_full_screen,