1-20 Chapter 1: 7401-2xxx and 3xxx Product Overview
The Processor Boards support linear addressing by creating a "hole" in
the memory address space at the 63 MB boundary. When the system is
configured for 64 MB and linear addressing is enabled, t h e las t 1 MB of
system memory is unusable; therefore, t h e board will rep ort that total
available system memory is 63 MB.
Because a hole in memory creates a non-contiguous address space,
enabling linear addressing when total sy s tem DRAM is greater than 64
MB is not recommended. Video linear addressing is enable d t h ro ugh
PC Setup under the Integrated Peripherals menu.
The processor also suppo rts VESA standards suc h a s the VESA DPMS
protocol to place a DPMS compliant monitor into power savings
modes.
Release 2. 5 p rocessor bo ards with the Lynx 3DM/3DM + c h ip support
the following DirectX 6 Direct Draw and Direct 3D graphics functions.
• Rasterization acceleration
• Z buffer
• Alpha comparison
• Texture filtering
• Texture blending
• Mimap support
• Vertex and Global fogs
• Diffuse and specular color
• Alpha blending
• Triangle and line drawing
The following DirectX 8 functions are not supported:
• TnL
• Vertex shader
• Pixel shader
• Bump mapping
• Box mapping