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AMD Confidential
User Manual November 21
st
, 2008
Chapter 7: Device Configuration 67
Figure 7-8: Graphics Device Frame Buffer SubDevice Properties
Difference from Real Hardware
The Emerald Graphics device currently does not simulate any specific graphics hardware,
it simulates something functionally “like” a modern graphics adapter, with only 2D
acceleration implemented at this time. Drivers are Windows only at the moment.
When the VGA display window has the focus, any keyboard messages and mouse-click
messages received by the window are routed via a DEVCWINDOWMSG message
through the simulators I/O subsystem. The keyboard or mouse device accepts these
messages and simulates key-presses and key-releases to match the keys. While certain
key combinations do not result in the generation of keyboard messages by the OS, this
does enable you to use the real keyboard to interact with the simulation in many cases.
Supported VESA BIOS Graphics Modes
Only supports flat and linear frame buffer, with 16-bit/64K (5:6:5) colors and 32-
bit/16.8M (8:8:8:8) colors modes.
Table 7-2 shows the subset of "standard" VESA mode numbers supported.
Mode Number
Resolution
Color depth
10Eh
320x200
16-bit
111h
640x480
16-bit
114h
800x600
16-bit
117h
1024x768
16-bit
11Ah
1280x1024
16-bit
Table 7-2: Supported Standard VESA Modes
Table 7-3 shows the supported custom VESA mode numbers.