Looking through the initialization info, I find: kernel: Linux video capture interface: v1.00 kernel: i2c: initialized kernel: Zoran ZR36060 + ZR36057/67 MJPEG board driver version 0.9 kernel: MJPEG[0]: Zoran ZR36067 (rev 2) irq: 9, memory: 0xa0005000 kernel: MJPEG[0]: subsystem vendor=0x1031 id=0x7efe kernel: MJPEG[0]: Initializing i2c bus... kernel: saa7110_attach: SAA7110A version 1 at 0x9c, status=0x21 kernel: adv7176_attach: adv7176 rev. 1 at 0x56 kernel: DC10plus[0] card detected kernel: DC10plus[0]: Zoran ZR36060 (rev 1) kernel: MJPEG: 1 card(s) found kernel: MJPEG: using 2 V4L buffers of size 128 KB kernel: DC10plus[0]: Initializing card[0], zr=c884c5e0 kernel: DC10plus[0]: Testing interrupts... kernel: DC10plus[0]: interrupts received: GIRQ1:60 queue_state=0/0/0/0 kernel: DC10plus[0]: procfs entry /proc/zoran0 allocated. data=c884c5e0 Can I use any of this information to correctly set my struct video_buffer before I call: ioctl(fd, VIDIOCSFBUF, &vid_buf); It sure looks like it gets set during initialization, so why is it suddenly unset when I get around to changing the window size? Thanks, Tom -----Original Message----- From: video4linux-list-admin@xxxxxxxxxx [mailto:video4linux-list-admin@xxxxxxxxxx]On Behalf Of Tom Goetze Sent: Tuesday, September 25, 2001 5:34 PM To: Video4linux-List Subject: DC10Plus sizing problem I have installed the latest zoran drivers, and I can successfully open a video device, but when I try to change the window size: status = ioctl(fd,VIDIOCSWIN,&vid_win); I always get a message in /var/log/messages: DC10plus[0]: VIDIOCSWIN: frame buffer has to be set first I have tried to use: ret_code = ioctl(fd, VIDIOCSFBUF, &vid_buf); where vid_buf.base = NULL, but this doesn't help, since as soon as I call the size change, it still complains. I have looked at the zoran.c and it appears that if the base address of the video_buffer is NULL, then the above error message is always displayed. Is there a way I can get the address for my card? The chipset is the ZR36060.