Project Name: PCI bridge

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Test Application

Snapshots | Insight Development Board | FB Driver for Linux


The purpose of VGA Test Application

VGA Test Application intends to show that the PCI bridge has enaugh throughput to successfully work in a system with more PCI devices (like PC-based PCI bus).

The main difference between VGA Card and our VGA Test Application

VGA Card uses the on-board memory for storing at least one frame buffer. When a part of picture should be changed, then only the modification of frame buffer is written to the PCI Card.

VGA Test Application do not use an on-board memory for storing a frame buffer. FB (frame buffer) driver allocates a part of system memory for storing the whole frame and sets the starting address to the VGA Test Application card which reads the frame buffer through PCI bus every time the screen has to be refreshed (60 times per second = 60 Hz refresh rate).