Forum Discussion
Altera_Forum
Honored Contributor
19 years agoNiosII University IP Core VGA
Please Help!
Using Altera DE1 board. Added the University IP VGA core downloadable from Alteras Website to my SOPC builder. Have been simulating in Quartus II and cannot get any signals for V_sync and H_sync. There is a 25Mhz clock to the VGA Core, and 50Mhz clock to the slaves as specified in the provided PDF. Question: Is there something I am missing? Is there a initialization, or a start bit to trigger the VGA core to start the timing? The H and V sync signals start low, but once the vga clock begins they go high and stay high. Since they are active low, thats whats expected without a clock, but there is a clock. All suggestions would be helpful.2 Replies
- Altera_Forum
Honored Contributor
Just to make sure, are you using the DE Boards External Interface to get the 25MHz signal?
And could you show us please that how did you connect your nios system? - Altera_Forum
Honored Contributor
EDIT:
Yeah it was just a simple mistake on my part why I couldn't see a vga response. Adding the DE Board external interface fixed the problem. Thanks!!