From 4f523681b7e786694969bcb7bfddb68b976c8ab7 Mon Sep 17 00:00:00 2001 From: jcorgan Date: Thu, 3 Aug 2006 04:51:51 +0000 Subject: Houston, we have a trunk. git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@3122 221aa14e-8319-0410-a670-987f0aec2ac5 --- sdr_lib/hb/ram16_2sum.v | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 sdr_lib/hb/ram16_2sum.v (limited to 'sdr_lib/hb/ram16_2sum.v') diff --git a/sdr_lib/hb/ram16_2sum.v b/sdr_lib/hb/ram16_2sum.v new file mode 100644 index 000000000..559b06fd5 --- /dev/null +++ b/sdr_lib/hb/ram16_2sum.v @@ -0,0 +1,27 @@ + + +module ram16_2sum (input clock, input write, + input [3:0] wr_addr, input [15:0] wr_data, + input [3:0] rd_addr1, input [3:0] rd_addr2, + output reg [15:0] sum); + + reg signed [15:0] ram_array [0:15]; + reg signed [15:0] a,b; + wire signed [16:0] sum_int; + + always @(posedge clock) + if(write) + ram_array[wr_addr] <= #1 wr_data; + + always @(posedge clock) + begin + a <= #1 ram_array[rd_addr1]; + b <= #1 ram_array[rd_addr2]; + end + + assign sum_int = {a[15],a} + {b[15],b}; + + always @(posedge clock) + sum <= #1 sum_int[16:1] + (sum_int[16]&sum_int[0]); + +endmodule // ram16_2sum -- cgit v1.2.3