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DNA Sequence Alignment Accelerator
This project forked from freecores/seqalign
DNA Sequence Alignment Accelerator
This is the initial release of the code. sw_pe_affine.v is the module of the 'processing elements' that make up the systolic array. sw_gen_affine.v is the 'top level' file that instantiates an array of PEs. It is fairly easily configurable to make the array shorter or longer (by modifying the LENGTH and LOGLENGTH local params). sw_gen_testbench.v is a small testbench which instantiates a 4-PE array and compares two 4 x 4 DNA sequences. sw_gen_affine should be instantiated by the toplevel block of your design, along with the custom interface glue necessary to connect them. To operate the block, a query value (a packed array containing encoded 2-bit nucleotides) and length (in nucleotides) should be set as inputs. Then, a reset pulse should be sent down the array. Then, the i_vld (valid) signal should be held high as the comparison string is clocked in, two bits at a time, until the string is completed and the i_vld signal is lowered. When the o_vld signal goes low, the array is done processing and the result is ready. If the "local" bit is high, the result will be on the "o_high" output of the last element. If the "local" bit is low (global alignment mode), the valid result will be the higher of the two "o_right_*" outputs of the last element. Happy Sequencing!
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