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General description

Charon-AXP supports emulation of PBXGA graphics card(s) by direct virtualization and provides a virtual console for displaying graphics.

The console starts automatically upon starting the emulator. Its resolution is 800 x 600 by default.

Emulated cards

  • PBXGA_AA - ZLXp-E1 (8bpp, PseudoColor)
  • PBXGA_BA - ZLXp-E2 (24bpp, TrueColor)

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Info

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

Predefine the graphic screen size.

Possible values: 640x480, 800x600 (default), 1024x768, 1152x900, 1280x1024, 1920x1080

Example:

set GYA size = 1024x768

cpu_draw

Parametercpu_draw
Typeboolean
Value

Offloading raster operations. The default value is "true"

Example:

set GYA cpu_draw = false


application

Parameter

application

Type

Text string

Value

Specifies the application to open for displaying the graphical console.

The pbxga_tv executable file is provided for this. It is located in the same folder as the Charon emulator executable file.

Syntax:

pbxga_tv -c <configuration_name> -n <device name(s)>

(info) When several graphic cards are loaded, the <device name(s)> have to be separated by a pipe character and the application has to be defined for the latest loaded PBXGA card. See examples further.

Example:

set GYA application = "pbxga_tv -c DS20 -n GYA"


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Examples

Example 1: 8-bpp graphics on AlphaServer 400

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set session hw_model = AlphaServer_400
set session configuration_name = AS400
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load PBXGA_AA GYA irq_bus = isa size = 1024x768
set GYA application = "pbxga_tv -c AS400 -n GYA"

Example 2: 24-bpp graphics on AlphaServer DS20

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set session hw_model = AlphaServer_DS20
set session configuration_name = DS20
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load PBXGA_BA GYA size = 1280x1024
set GYA application = "pbxga_tv -c DS20 -n GYA"

Example 3: dual head display, 2x 1280x1024

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set session hw_model = AlphaServer_ES45
set session configuration_name = ES45
...
load PBXGA_BA GYA size = 1280x1024
load PBXGA_BA GYB size = 1280x1024
set GYB application = "pbxga_tv -c ES45 -n GYA|GYB"

Example 4: triple head display, 3x 1280x1024

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set session hw_model = AlphaServer_ES45
set session configuration_name = ES45
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load PBXGA_BA GYA size = 1280x1024
load PBXGA_BA GYB size = 1280x1024
load PBXGA_BA GYC size = 1280x1024
set GYC application = "pbxga_tv -c ES45 -n GYA|GYB|GYC"


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