How to Implement VHDL Drawing Buffer in DE2

Hi,

can't you use a processor such as NIOSII with (important) a bridged access to memory ?

if the display takes half of the bandwidth, then the update must be lower than half in practice.

It depends if you want to refresh the whole image every time, with a processor, you can simply update the pixels to change.

If the whole image needs to be updated, then you just need to arbiter the access and to buffer a streaming update of the memory for example. you have to design it lower than the theoretical bandwidth (memory bank switching overhead), use bursting necessarily.

Yes, that sounds like a complicated task for HDL only initiative, maybe SOPC-QSys could be a way out.