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Diffstat (limited to 'techlibs/xilinx/tests/bram1.v')
-rw-r--r-- | techlibs/xilinx/tests/bram1.v | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/techlibs/xilinx/tests/bram1.v b/techlibs/xilinx/tests/bram1.v new file mode 100644 index 000000000..034cc18e9 --- /dev/null +++ b/techlibs/xilinx/tests/bram1.v @@ -0,0 +1,24 @@ +module bram1 #( + parameter ABITS = 8, DBITS = 8, TRANSP = 0 +) ( + input clk, + + input [ABITS-1:0] WR_ADDR, + input [DBITS-1:0] WR_DATA, + input WR_EN, + + input [ABITS-1:0] RD_ADDR, + output [DBITS-1:0] RD_DATA +); + reg [DBITS-1:0] memory [0:2**ABITS-1]; + reg [ABITS-1:0] RD_ADDR_BUF; + reg [DBITS-1:0] RD_DATA_BUF; + + always @(posedge clk) begin + if (WR_EN) memory[WR_ADDR] <= WR_DATA; + RD_ADDR_BUF <= RD_ADDR; + RD_DATA_BUF <= memory[RD_ADDR]; + end + + assign RD_DATA = TRANSP ? memory[RD_ADDR_BUF] : RD_DATA_BUF; +endmodule |