Just got my Xilinx Spartan 3 board operational. One part of the board sends digital data to a video DAC at 48 MHz. I did a priliminary program to send a test pattern to this DAC but the results change with a modification to the VGACLK'event and VGACLK='1' line. If I change the '1' to a '0' I get better results. I suppose I should now go Spartan 3 specific and use the Xilinx DCMs? Can someone point me to beginners doc on clock distribution and DCMs? I am printing the 68 page XAPP462 as I write this post but sheesh what a horse!
Thanks,
Brad