Hi,
I have a problem using the second Pixel Buffer.
I'm using the SRAM at 0x0000000 for the first one
and I have althoug configured the second one on
this adress in the SOPC-Builder.
Now I am manipulating the SRAM via some VHDL
code, which I connect via the External Master to
Avalon slave form the UP, which works fine.
Now in NIOS I created an buffer, within SDRAM ,
and passed the adress to the VGA-Framebuffer as
a the adress of the backbuffer, which also works fine,
at least in the debug mode.
But when I switch from first to second buffer, the adress
in the VGA-Pixelbuffer switches correctly but on the
screen nothing happens.
What's kind of weird is that sometimes I only can see the
Pixelbuffer stored in the SDRAM, but I can't find out how
this happens The only way to restore is then to unplug the
device from current.
Although my alt_alarm functions don't seem to work might
this be reason for my problem.
Thanks a lot for your help
Best wishes
