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209 lines
3.4 KiB
209 lines
3.4 KiB
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<HTML
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>Notes about Cirrus SVGA usage</TITLE
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TITLE="Tips and Techniques"
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TITLE="Notes about VESA usage"
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HREF="vesa-notes.html"><LINK
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TITLE="Disk Image Modes"
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>Bochs User Manual</TH
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>Prev</A
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></TD
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><TD
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>Chapter 8. Tips and Techniques</TD
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CLASS="SECTION"
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><H1
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CLASS="SECTION"
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><A
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NAME="CIRRUS-NOTES"
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>8.17. Notes about Cirrus SVGA usage</A
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></H1
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><P
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> Since Bochs 2.2 it is possible to use Cirrus SVGA graphics. The Cirrus device
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supports both ISA and PCI depending on the <TT
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CLASS="FILENAME"
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>bochsrc</TT
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> settings.
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If PCI is disabled or the Cirrus card is not assigned to a PCI slot, it appears
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as a CL-GD5430 ISA with 2MB VRAM. If you assign the Cirrus card to a PCI slot,
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it appears as a CL-GD5446 PCI with 4MB VRAM.
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</P
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><P
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> In order to use Cirrus SVGA, you need to compile Bochs using the <CODE
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CLASS="OPTION"
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>--enable-clgd54xx</CODE
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>
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option and enable it in your <TT
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CLASS="FILENAME"
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>bochsrc</TT
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> by setting the
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<A
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HREF="bochsrc.html#BOCHSOPT-VGA"
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>vga option</A
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> to <CODE
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CLASS="PARAMETER"
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>cirrus</CODE
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>.
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Finally, you need to use the Cirrus version of the
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<A
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HREF="http://savannah.nongnu.org/projects/vgabios/"
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TARGET="_top"
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>LGPL'd VGABIOS</A
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>
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as <A
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HREF="bochsrc.html#BOCHSOPT-VGAROMIMAGE"
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>vgaromimage option</A
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> for
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applications to correctly detect Cirrus support.
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</P
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><TABLE
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BGCOLOR="#E0E0E0"
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WIDTH="100%"
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><TR
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><TD
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><PRE
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CLASS="SCREEN"
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> # Enable CL-GD5446 PCI
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vga: extension=cirrus
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vgaromimage: file=$BXSHARE/VGABIOS-lgpl-latest-cirrus
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i440fxsupport: enabled=1, slot1=cirrus
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</PRE
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></TD
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></TR
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></TABLE
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><DIV
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CLASS="NOTE"
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><BLOCKQUOTE
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CLASS="NOTE"
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><P
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><B
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>Note: </B
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> The VGABIOS is already included in the Bochs release, so no separate download is necessary.
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</P
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></BLOCKQUOTE
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>Prev</A
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>Notes about VESA usage</TD
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><TD
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>Disk Image Modes</TD
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>
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