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Altera_Forum
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13 years ago

store LSB after shift right - vhdl

Hi, In my project I need to right shift an input vector by one. For example I have A=0101. Then right shift by one I get Q=0010. Now, I want to store the LSB of the input vector in this case is...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Why not just create a wide shift register and tap off it accordingly. For example if i had a 4-bit input and I wanted to right shift and retain the LSB I would create a 5-bit shift register where bits [4:1] represent the result and [0] represents the LSB that was shifted out of the result. If you wanted to do this over and over then just keep shifting and pluck that bit [0] out.