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Altera_Forum's avatar
Altera_Forum
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13 years ago

Pseudo-random Number Generator

Hi, I have looking for a Pseudo-random number generator with some maximum linit. I know the LFSR approach but I dont know how to limit the maximum number generated by the LFSR. For example if I...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

In theory, you need to change your lfsr_out to the range of 0 to 1 (1 not included) and then scale it by (limit + 1). In your 8-bit case:

wire [15:0] temp = lfsr_out * 16'd201;

wire [7:0] result = temp [15:8];

lfsr_out is the output of your LFSR and result is what you are looking for.