The control device vidctl accepts the following commands:
Video data can be written to the video frame buffer by writes of the viddata file. The file offset selects the starting byte within the frame buffer. Reads return the corresponding data from the frame buffer. The application is responsible for formatting the data as the 823's video encoder requires, for the selected video format.
The file vidcram gives read and write access to the contents of the video control RAM. The file offset addresses bytes in the RAM; values can be read from or written to the RAM in groups of 4-byte big-endian words.
|vid(3)||Rev: Tue Mar 31 02:42:38 GMT 2015|