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Altera_Forum
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16 years ago

inference of multipliers from VHDL

Hello, I am working with a Cyclone 2, she has many 8*8 multipliers. I have a module where I use multiplications. After compiling my VHDL code I can see with the "RTL Viewer" the multi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

from your RTL Viewer image the circled multipler looks like it has a constant coefficient. this type of multiplier is built very efficiently in LE, it was probably a smart choice for Quartus to use them instead of a multiplier. you can always force a hard multiplier as mentioned.