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author | Martin Braun <martin.braun@ettus.com> | 2014-10-07 11:25:20 +0200 |
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committer | Martin Braun <martin.braun@ettus.com> | 2014-10-07 11:25:20 +0200 |
commit | fd3e84941de463fa1a7ebab0a69515b4bf2614cd (patch) | |
tree | 3fa721a13d41d2c0451d663a59a220a38fd5e614 /fpga/usrp1/models/fifo.v | |
parent | 3b66804e41891e358c790b453a7a59ec7462dba4 (diff) | |
download | uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.gz uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.tar.bz2 uhd-fd3e84941de463fa1a7ebab0a69515b4bf2614cd.zip |
Removed copy of FPGA source files.
Diffstat (limited to 'fpga/usrp1/models/fifo.v')
-rw-r--r-- | fpga/usrp1/models/fifo.v | 82 |
1 files changed, 0 insertions, 82 deletions
diff --git a/fpga/usrp1/models/fifo.v b/fpga/usrp1/models/fifo.v deleted file mode 100644 index 0ade49e9c..000000000 --- a/fpga/usrp1/models/fifo.v +++ /dev/null @@ -1,82 +0,0 @@ -// Model of FIFO in Altera - -module fifo( data, wrreq, rdreq, rdclk, wrclk, aclr, q, - rdfull, rdempty, rdusedw, wrfull, wrempty, wrusedw); - - parameter width = 16; - parameter depth = 1024; - parameter addr_bits = 10; - - //`define rd_req 0; // Set this to 0 for rd_ack, 1 for rd_req - - input [width-1:0] data; - input wrreq; - input rdreq; - input rdclk; - input wrclk; - input aclr; - output [width-1:0] q; - output rdfull; - output rdempty; - output reg [addr_bits-1:0] rdusedw; - output wrfull; - output wrempty; - output reg [addr_bits-1:0] wrusedw; - - reg [width-1:0] mem [0:depth-1]; - reg [addr_bits-1:0] rdptr; - reg [addr_bits-1:0] wrptr; - -`ifdef rd_req - reg [width-1:0] q; -`else - wire [width-1:0] q; -`endif - - integer i; - - always @( aclr) - begin - wrptr <= #1 0; - rdptr <= #1 0; - for(i=0;i<depth;i=i+1) - mem[i] <= #1 0; - end - - always @(posedge wrclk) - if(wrreq) - begin - wrptr <= #1 wrptr+1; - mem[wrptr] <= #1 data; - end - - always @(posedge rdclk) - if(rdreq) - begin - rdptr <= #1 rdptr+1; -`ifdef rd_req - q <= #1 mem[rdptr]; -`endif - end - -`ifdef rd_req -`else - assign q = mem[rdptr]; -`endif - - // Fix these - always @(posedge wrclk) - wrusedw <= #1 wrptr - rdptr; - - always @(posedge rdclk) - rdusedw <= #1 wrptr - rdptr; - - assign wrempty = (wrusedw == 0); - assign wrfull = (wrusedw == depth-1); - - assign rdempty = (rdusedw == 0); - assign rdfull = (rdusedw == depth-1); - -endmodule // fifo - - |