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Altera_Forum
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15 years ago

Counting the position of ones in a binary vector

I want to design a combinatorial circuit for an fpga which will count the position of ones in a 16 bit vector. eg1 if vector is 16'b0000_0000_0011_0101 then output should be 64'h0000_0000_0000_5...
Altera_Forum's avatar
Altera_Forum
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15 years ago

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This is a "bug" thats been around a while, and have mentioned on our internal wiki.

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Thanks for clarifying. According to josyb, it has been already fixed in V9.1SP2. I accepted the limitation when working with previous Quartus versions and didn't yet figure out, if a variable slice range is required by the VHDL standard. Do you know the exact paragraph in IEEE 1076?