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AMD GeodeTM Solutions
Editing the Durango Mode Table
for Display Drivers

1.0 Scope
Durango is a graphics/video software support package The next 12 structure members represent the mode
designed to assist in the development of display drivers timings. In order, they are: HACTIVE, HBLANK-
and embedded applications. The core of this package is START, HSYNCSTART, HSYNCEND, HBLANKEND,
source code that performs most of the graphics related HTOTAL, VACTIVE, VBLANKSTART, VSYNCSTART,
functionality for AMD GeodeTM solutions. Development VSYNCEND, VBLANKEND, AND VTOTAL. These val-
time for new software is reduced by using these routines to ues are generally derived from a timing sheet.
access the hardware. The last structure member represents the Dot Clock
This document describes how to add a new video mode to frequency in 16.16 fixed point format. In the example,
display drivers that incorporate Durango. The examples the frequency is specified as 28.56 MHz.
referenced are from the Windows