Basic Example of Usage

The isonchronous enable register indicates active video transmission. To read the ISO_EN register (0x614), calculate the memory offset by adding the specified offset to the base register. The base register is 0xF0F00000 for most IEEE 1394 cameras.

0xF0F00000 + 0x614 = 0xF0F00614

The value is read, and the result is placed in the specified memory location.

read register (0xF0F00614) = <iso_en>

where <iso_en> = (0x80000000 or 0x00000000).

If bit 0 has a value of 0x80000000, the bit is on, and the camera is transmitting video data. If bit 0 has a value of 0x00000000, the camera is not currently transmitting data.