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Diffstat (limited to 'fpga/usrp2/control_lib/dpram32.v')
-rw-r--r-- | fpga/usrp2/control_lib/dpram32.v | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/fpga/usrp2/control_lib/dpram32.v b/fpga/usrp2/control_lib/dpram32.v deleted file mode 100644 index 386435e70..000000000 --- a/fpga/usrp2/control_lib/dpram32.v +++ /dev/null @@ -1,99 +0,0 @@ -// -// Copyright 2011 Ettus Research LLC -// -// This program is free software: you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation, either version 3 of the License, or -// (at your option) any later version. -// -// This program is distributed in the hope that it will be useful, -// but WITHOUT ANY WARRANTY; without even the implied warranty of -// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -// GNU General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program. If not, see <http://www.gnu.org/licenses/>. -// - - -// Dual ported RAM -// Addresses are byte-oriented, so botton 2 address bits are ignored. -// AWIDTH of 13 allows you to address 8K bytes. -// For Spartan 3, if the total RAM size is not a multiple of 8K then BRAM space is wasted -// RAM_SIZE parameter allows odd-sized RAMs, like 24K - -module dpram32 #(parameter AWIDTH=15, - parameter RAM_SIZE=16384) - (input clk, - - input [AWIDTH-1:0] adr1_i, - input [31:0] dat1_i, - output reg [31:0] dat1_o, - input we1_i, - input en1_i, - input [3:0] sel1_i, - - input [AWIDTH-1:0] adr2_i, - input [31:0] dat2_i, - output reg [31:0] dat2_o, - input we2_i, - input en2_i, - input [3:0] sel2_i ); - - reg [7:0] ram0 [0:(RAM_SIZE/4)-1]; - reg [7:0] ram1 [0:(RAM_SIZE/4)-1]; - reg [7:0] ram2 [0:(RAM_SIZE/4)-1]; - reg [7:0] ram3 [0:(RAM_SIZE/4)-1]; - - // This is how we used to size the RAM --> - // reg [7:0] ram3 [0:(1<<(AWIDTH-2))-1]; - - // Port 1 - always @(posedge clk) - if(en1_i) dat1_o[31:24] <= ram3[adr1_i[AWIDTH-1:2]]; - always @(posedge clk) - if(en1_i) dat1_o[23:16] <= ram2[adr1_i[AWIDTH-1:2]]; - always @(posedge clk) - if(en1_i) dat1_o[15:8] <= ram1[adr1_i[AWIDTH-1:2]]; - always @(posedge clk) - if(en1_i) dat1_o[7:0] <= ram0[adr1_i[AWIDTH-1:2]]; - - always @(posedge clk) - if(we1_i & en1_i & sel1_i[3]) - ram3[adr1_i[AWIDTH-1:2]] <= dat1_i[31:24]; - always @(posedge clk) - if(we1_i & en1_i & sel1_i[2]) - ram2[adr1_i[AWIDTH-1:2]] <= dat1_i[23:16]; - always @(posedge clk) - if(we1_i & en1_i & sel1_i[1]) - ram1[adr1_i[AWIDTH-1:2]] <= dat1_i[15:8]; - always @(posedge clk) - if(we1_i & en1_i & sel1_i[0]) - ram0[adr1_i[AWIDTH-1:2]] <= dat1_i[7:0]; - - // Port 2 - always @(posedge clk) - if(en2_i) dat2_o[31:24] <= ram3[adr2_i[AWIDTH-1:2]]; - always @(posedge clk) - if(en2_i) dat2_o[23:16] <= ram2[adr2_i[AWIDTH-1:2]]; - always @(posedge clk) - if(en2_i) dat2_o[15:8] <= ram1[adr2_i[AWIDTH-1:2]]; - always @(posedge clk) - if(en2_i) dat2_o[7:0] <= ram0[adr2_i[AWIDTH-1:2]]; - - always @(posedge clk) - if(we2_i & en2_i & sel2_i[3]) - ram3[adr2_i[AWIDTH-1:2]] <= dat2_i[31:24]; - always @(posedge clk) - if(we2_i & en2_i & sel2_i[2]) - ram2[adr2_i[AWIDTH-1:2]] <= dat2_i[23:16]; - always @(posedge clk) - if(we2_i & en2_i & sel2_i[1]) - ram1[adr2_i[AWIDTH-1:2]] <= dat2_i[15:8]; - always @(posedge clk) - if(we2_i & en2_i & sel2_i[0]) - ram0[adr2_i[AWIDTH-1:2]] <= dat2_i[7:0]; - -endmodule // dpram32 - - |