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General description

CHARON-AXP supports emulation of PBXGA graphics card by direct virtualization. CHARON provides a virtual console for displaying graphics. The console starts automatically upon starting CHARON. Its resolution is 800 x 600 by default .

PBXGA graphics console cannot be used as the system console. Use OPA0 for this purpose.

If PBXGA graphics card is going to be used the resolution of CHARON host screen must be not less than 600 x 800 to provide an ability to display the graphics console properly.


Virtual PBXGA PCI graphics card

Loading virtual PBXGA graphics card

Syntax for loading PBXGA graphics card:

load PBXGA <name>

Syntax for loading PBXGA graphics card on AlphaServer 400:

load PBXGA <name> irq_bus = isa

Example:

load PBXGA GYA

On Charon startup a window will appear on CHARON host monitor to display graphics.

If PBXGA graphics card is used CHARON cannot run as a service

If the window of the PBXGA graphics card console is closed by user (or killed as a process) it will not re-appear automatically (CHARON will continue to work in this case). In this situation user has to restart CHARON to make it reopen the console.


All the parameters described in the "Placement of peripheral devices on PCI bus" chapter, such as "bus", "device", "function", "irq", "irq_bus" are applicable for PBXGA graphics card.


Configuration parameters

size

Parametersize
TypeText string
Value

Predefined the graphic screen size: "800x600" (default), "1024x768", "1152x900" and "1280x1024"

set GYA size = 024x768

cpu_draw

Parametercpu_draw
Typeboolean
Value

Offloading raster operations. The default value is "true"

set GYA cpu_draw = false
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