compare multiple std_logic_vectors

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(I assume your work is video based from previous posts)

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True,

But i need the images to be stored at the same time in one memory.

Can't buffer a whole image in BlockRam, so i buffer in FIFO's first. Then

i write the fifo with the most data into the memory untill that one is empty.

Then i go one with the next one.

Reading the fifo's at the same time (like u suggested) would imply

parrallel writing to the memory what isn't possible in my case.

(well it's possible to write 2 bytes at one time but it would be to the same adress)