HSC
cx18_av_write(cx, 0x41a, HSC >> 16);
int HSC, VSC, Vsrc, Hsrc, filter, Vlines;
HSC = (Hsrc * (1 << 20)) / fmt->width - (1 << 20);
fmt->width, fmt->height, HSC, VSC);
cx18_av_write(cx, 0x418, HSC & 0xff);
cx18_av_write(cx, 0x419, (HSC >> 8) & 0xff);
OUTB(nc_stest3, HSC); /* Halt the scsi clock */
OUTB(np, nc_stest3, HSC); /* Halt the scsi clock */