Computers as Components, 2nd Edition

392 CHAPTER 7 Multiprocessors

bus. We may want to verify the operation of the basic PCI interface before we finish

implementing the video accelerator logic.

The host PC will probably deal with the accelerator as an I/O device. The accel-

erator board will have its own driver that is responsible for talking to the board.

Since most of the data transfers are performed directly by the board using DMA, the

driver can be relatively simple.

7.9.5 System Testing

Testing video algorithms requires a large amount of data. Luckily,the data represents

images and video, which are plentiful. Because we are designing only a motion

estimation accelerator and not a complete ...