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Fixes xc7 BRAM36s

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UG473 from Xilinx states that 15 bit should always be set if RAMB isn't in cascade mode.

Signed-off-by: Maciej Dudek <mdudek@antmicro.com>
This commit is contained in:
Maciej Dudek 2021-07-29 21:10:02 +02:00 • committed by Marcelina Kościelnicka
parent c016f6a423
commit cfddef5d7d
1 changed files with 6 additions and 4 deletions
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10
techlibs/xilinx/xc7_brams_map.v
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@ -16,8 +16,9 @@ module \$__XILINX_RAMB36_SDP (CLK2, CLK3, A1ADDR, A1DATA, A1EN, B1ADDR, B1DATA,
input [71:0] B1DATA; input [71:0] B1DATA;
input [7:0] B1EN; input [7:0] B1EN;
wire [15:0] A1ADDR_16 = {A1ADDR, 6'b0}; // Set highest address bit to 1, as stated in UG473 (v1.14) July 3, 2019
wire [15:0] B1ADDR_16 = {B1ADDR, 6'b0}; wire [15:0] A1ADDR_16 = {1'b1, A1ADDR, 6'b0};
wire [15:0] B1ADDR_16 = {1'b1, B1ADDR, 6'b0};
wire [7:0] DIP, DOP; wire [7:0] DIP, DOP;
wire [63:0] DI, DO; wire [63:0] DI, DO;
@ -153,8 +154,9 @@ module \$__XILINX_RAMB36_TDP (CLK2, CLK3, A1ADDR, A1DATA, A1EN, B1ADDR, B1DATA,
input [CFG_DBITS-1:0] B1DATA; input [CFG_DBITS-1:0] B1DATA;
input [CFG_ENABLE_B-1:0] B1EN; input [CFG_ENABLE_B-1:0] B1EN;
wire [15:0] A1ADDR_16 = A1ADDR << (15 - CFG_ABITS); // Set highest address bit to 1, as stated in UG473 (v1.14) July 3, 2019
wire [15:0] B1ADDR_16 = B1ADDR << (15 - CFG_ABITS); wire [15:0] A1ADDR_16 = {1'b1, A1ADDR} << (15 - CFG_ABITS);
wire [15:0] B1ADDR_16 = {1'b1, B1ADDR} << (15 - CFG_ABITS);
wire [7:0] B1EN_8 = B1EN; wire [7:0] B1EN_8 = B1EN;
wire [3:0] DIP, DOP; wire [3:0] DIP, DOP;