qi-hardware
/
nn-usb-fpga
mirror of git://projects.qi-hardware.com/nn-usb-fpga.git
1
0
Fork 0
Code
nn-usb-fpga/Examples/sram_gpio/logic/sim/unisims/RAMB16_S2_S4.v

1556 lines
64 KiB
Verilog
Raw Blame History

// $Header: /devl/xcs/repo/env/Databases/CAEInterfaces/verunilibs/data/unisims/RAMB16_S2_S4.v,v 1.10.158.2 2007/03/09 18:13:18 patrickp Exp $
///////////////////////////////////////////////////////////////////////////////
// Copyright (c) 1995/2005 Xilinx, Inc.
// All Right Reserved.
///////////////////////////////////////////////////////////////////////////////
// ____ ____
// / /\/ /
// /___/ \ / Vendor : Xilinx
// \ \ \/ Version : 8.1i (I.13)
// \ \ Description : Xilinx Functional Simulation Library Component
// / / 16K-Bit Data and 2K-Bit Parity Dual Port Block RAM
// /___/ /\ Filename : RAMB16_S2_S4.v
// \ \ / \ Timestamp : Thu Mar 10 16:43:36 PST 2005
// \___\/\___\
//
// Revision:
// 03/23/04 - Initial version.
// End Revision
`ifdef legacy_model
`timescale 1 ps / 1 ps
module RAMB16_S2_S4 (DOA, DOB, ADDRA, ADDRB, CLKA, CLKB, DIA, DIB, ENA, ENB, SSRA, SSRB, WEA, WEB);
parameter INIT_A = 2'h0;
parameter INIT_B = 4'h0;
parameter SRVAL_A = 2'h0;
parameter SRVAL_B = 4'h0;
parameter WRITE_MODE_A = "WRITE_FIRST";
parameter WRITE_MODE_B = "WRITE_FIRST";
parameter SIM_COLLISION_CHECK = "ALL";
localparam SETUP_ALL = 1000;
localparam SETUP_READ_FIRST = 3000;
parameter INIT_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_02 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_03 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_04 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_05 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_06 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_07 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_08 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_09 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_10 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_11 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_12 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_13 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_14 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_15 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_16 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_17 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_18 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_19 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_20 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_21 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_22 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_23 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_24 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_25 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_26 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_27 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_28 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_29 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_30 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_31 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_32 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_33 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_34 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_35 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_36 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_37 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_38 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_39 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
output [1:0] DOA;
reg [1:0] doa_out;
wire doa_out0, doa_out1;
input [12:0] ADDRA;
input [1:0] DIA;
input ENA, CLKA, WEA, SSRA;
output [3:0] DOB;
reg [3:0] dob_out;
wire dob_out0, dob_out1, dob_out2, dob_out3;
input [11:0] ADDRB;
input [3:0] DIB;
input ENB, CLKB, WEB, SSRB;
reg [18431:0] mem;
reg [8:0] count;
reg [1:0] wr_mode_a, wr_mode_b;
reg [5:0] dmi, dbi;
reg [5:0] pmi, pbi;
wire [12:0] addra_int;
reg [12:0] addra_reg;
wire [1:0] dia_int;
wire ena_int, clka_int, wea_int, ssra_int;
reg ena_reg, wea_reg, ssra_reg;
wire [11:0] addrb_int;
reg [11:0] addrb_reg;
wire [3:0] dib_int;
wire enb_int, clkb_int, web_int, ssrb_int;
reg display_flag;
reg enb_reg, web_reg, ssrb_reg;
time time_clka, time_clkb;
time time_clka_clkb;
time time_clkb_clka;
reg setup_all_a_b;
reg setup_all_b_a;
reg setup_zero;
reg setup_rf_a_b;
reg setup_rf_b_a;
reg [1:0] data_collision, data_collision_a_b, data_collision_b_a;
reg memory_collision, memory_collision_a_b, memory_collision_b_a;
reg address_collision, address_collision_a_b, address_collision_b_a;
reg change_clka;
reg change_clkb;
wire [14:0] data_addra_int;
wire [14:0] data_addra_reg;
wire [14:0] data_addrb_int;
wire [14:0] data_addrb_reg;
wire [15:0] parity_addra_int;
wire [15:0] parity_addra_reg;
wire [15:0] parity_addrb_int;
wire [15:0] parity_addrb_reg;
tri0 GSR = glbl.GSR;
always @(GSR)
if (GSR) begin
assign doa_out = INIT_A[1:0];
assign dob_out = INIT_B[3:0];
end
else begin
deassign doa_out;
deassign dob_out;
end
buf b_doa_out0 (doa_out0, doa_out[0]);
buf b_doa_out1 (doa_out1, doa_out[1]);
buf b_dob_out0 (dob_out0, dob_out[0]);
buf b_dob_out1 (dob_out1, dob_out[1]);
buf b_dob_out2 (dob_out2, dob_out[2]);
buf b_dob_out3 (dob_out3, dob_out[3]);
buf b_doa0 (DOA[0], doa_out0);
buf b_doa1 (DOA[1], doa_out1);
buf b_dob0 (DOB[0], dob_out0);
buf b_dob1 (DOB[1], dob_out1);
buf b_dob2 (DOB[2], dob_out2);
buf b_dob3 (DOB[3], dob_out3);
buf b_addra_0 (addra_int[0], ADDRA[0]);
buf b_addra_1 (addra_int[1], ADDRA[1]);
buf b_addra_2 (addra_int[2], ADDRA[2]);
buf b_addra_3 (addra_int[3], ADDRA[3]);
buf b_addra_4 (addra_int[4], ADDRA[4]);
buf b_addra_5 (addra_int[5], ADDRA[5]);
buf b_addra_6 (addra_int[6], ADDRA[6]);
buf b_addra_7 (addra_int[7], ADDRA[7]);
buf b_addra_8 (addra_int[8], ADDRA[8]);
buf b_addra_9 (addra_int[9], ADDRA[9]);
buf b_addra_10 (addra_int[10], ADDRA[10]);
buf b_addra_11 (addra_int[11], ADDRA[11]);
buf b_addra_12 (addra_int[12], ADDRA[12]);
buf b_dia_0 (dia_int[0], DIA[0]);
buf b_dia_1 (dia_int[1], DIA[1]);
buf b_ena (ena_int, ENA);
buf b_clka (clka_int, CLKA);
buf b_ssra (ssra_int, SSRA);
buf b_wea (wea_int, WEA);
buf b_addrb_0 (addrb_int[0], ADDRB[0]);
buf b_addrb_1 (addrb_int[1], ADDRB[1]);
buf b_addrb_2 (addrb_int[2], ADDRB[2]);
buf b_addrb_3 (addrb_int[3], ADDRB[3]);
buf b_addrb_4 (addrb_int[4], ADDRB[4]);
buf b_addrb_5 (addrb_int[5], ADDRB[5]);
buf b_addrb_6 (addrb_int[6], ADDRB[6]);
buf b_addrb_7 (addrb_int[7], ADDRB[7]);
buf b_addrb_8 (addrb_int[8], ADDRB[8]);
buf b_addrb_9 (addrb_int[9], ADDRB[9]);
buf b_addrb_10 (addrb_int[10], ADDRB[10]);
buf b_addrb_11 (addrb_int[11], ADDRB[11]);
buf b_dib_0 (dib_int[0], DIB[0]);
buf b_dib_1 (dib_int[1], DIB[1]);
buf b_dib_2 (dib_int[2], DIB[2]);
buf b_dib_3 (dib_int[3], DIB[3]);
buf b_enb (enb_int, ENB);
buf b_clkb (clkb_int, CLKB);
buf b_ssrb (ssrb_int, SSRB);
buf b_web (web_int, WEB);
initial begin
for (count = 0; count < 256; count = count + 1) begin
mem[count] <= INIT_00[count];
mem[256 * 1 + count] <= INIT_01[count];
mem[256 * 2 + count] <= INIT_02[count];
mem[256 * 3 + count] <= INIT_03[count];
mem[256 * 4 + count] <= INIT_04[count];
mem[256 * 5 + count] <= INIT_05[count];
mem[256 * 6 + count] <= INIT_06[count];
mem[256 * 7 + count] <= INIT_07[count];
mem[256 * 8 + count] <= INIT_08[count];
mem[256 * 9 + count] <= INIT_09[count];
mem[256 * 10 + count] <= INIT_0A[count];
mem[256 * 11 + count] <= INIT_0B[count];
mem[256 * 12 + count] <= INIT_0C[count];
mem[256 * 13 + count] <= INIT_0D[count];
mem[256 * 14 + count] <= INIT_0E[count];
mem[256 * 15 + count] <= INIT_0F[count];
mem[256 * 16 + count] <= INIT_10[count];
mem[256 * 17 + count] <= INIT_11[count];
mem[256 * 18 + count] <= INIT_12[count];
mem[256 * 19 + count] <= INIT_13[count];
mem[256 * 20 + count] <= INIT_14[count];
mem[256 * 21 + count] <= INIT_15[count];
mem[256 * 22 + count] <= INIT_16[count];
mem[256 * 23 + count] <= INIT_17[count];
mem[256 * 24 + count] <= INIT_18[count];
mem[256 * 25 + count] <= INIT_19[count];
mem[256 * 26 + count] <= INIT_1A[count];
mem[256 * 27 + count] <= INIT_1B[count];
mem[256 * 28 + count] <= INIT_1C[count];
mem[256 * 29 + count] <= INIT_1D[count];
mem[256 * 30 + count] <= INIT_1E[count];
mem[256 * 31 + count] <= INIT_1F[count];
mem[256 * 32 + count] <= INIT_20[count];
mem[256 * 33 + count] <= INIT_21[count];
mem[256 * 34 + count] <= INIT_22[count];
mem[256 * 35 + count] <= INIT_23[count];
mem[256 * 36 + count] <= INIT_24[count];
mem[256 * 37 + count] <= INIT_25[count];
mem[256 * 38 + count] <= INIT_26[count];
mem[256 * 39 + count] <= INIT_27[count];
mem[256 * 40 + count] <= INIT_28[count];
mem[256 * 41 + count] <= INIT_29[count];
mem[256 * 42 + count] <= INIT_2A[count];
mem[256 * 43 + count] <= INIT_2B[count];
mem[256 * 44 + count] <= INIT_2C[count];
mem[256 * 45 + count] <= INIT_2D[count];
mem[256 * 46 + count] <= INIT_2E[count];
mem[256 * 47 + count] <= INIT_2F[count];
mem[256 * 48 + count] <= INIT_30[count];
mem[256 * 49 + count] <= INIT_31[count];
mem[256 * 50 + count] <= INIT_32[count];
mem[256 * 51 + count] <= INIT_33[count];
mem[256 * 52 + count] <= INIT_34[count];
mem[256 * 53 + count] <= INIT_35[count];
mem[256 * 54 + count] <= INIT_36[count];
mem[256 * 55 + count] <= INIT_37[count];
mem[256 * 56 + count] <= INIT_38[count];
mem[256 * 57 + count] <= INIT_39[count];
mem[256 * 58 + count] <= INIT_3A[count];
mem[256 * 59 + count] <= INIT_3B[count];
mem[256 * 60 + count] <= INIT_3C[count];
mem[256 * 61 + count] <= INIT_3D[count];
mem[256 * 62 + count] <= INIT_3E[count];
mem[256 * 63 + count] <= INIT_3F[count];
end
address_collision <= 0;
address_collision_a_b <= 0;
address_collision_b_a <= 0;
change_clka <= 0;
change_clkb <= 0;
data_collision <= 0;
data_collision_a_b <= 0;
data_collision_b_a <= 0;
memory_collision <= 0;
memory_collision_a_b <= 0;
memory_collision_b_a <= 0;
setup_all_a_b <= 0;
setup_all_b_a <= 0;
setup_zero <= 0;
setup_rf_a_b <= 0;
setup_rf_b_a <= 0;
end
assign data_addra_int = addra_int * 2;
assign data_addra_reg = addra_reg * 2;
assign data_addrb_int = addrb_int * 4;
assign data_addrb_reg = addrb_reg * 4;
initial begin
display_flag = 1;
case (SIM_COLLISION_CHECK)
"NONE" : begin
assign setup_all_a_b = 1'b0;
assign setup_all_b_a = 1'b0;
assign setup_zero = 1'b0;
assign setup_rf_a_b = 1'b0;
assign setup_rf_b_a = 1'b0;
assign display_flag = 0;
end
"WARNING_ONLY" : begin
assign data_collision = 2'b00;
assign data_collision_a_b = 2'b00;
assign data_collision_b_a = 2'b00;
assign memory_collision = 1'b0;
assign memory_collision_a_b = 1'b0;
assign memory_collision_b_a = 1'b0;
end
"GENERATE_X_ONLY" : begin
assign display_flag = 0;
end
"ALL" : ;
default : begin
$display("Attribute Syntax Error : The Attribute SIM_COLLISION_CHECK on RAMB16_S2_S4 instance %m is set to %s. Legal values for this attribute are ALL, NONE, WARNING_ONLY or GENERATE_X_ONLY.", SIM_COLLISION_CHECK);
$finish;
end
endcase // case(SIM_COLLISION_CHECK)
end // initial begin
always @(posedge clka_int) begin
time_clka = $time;
#0 time_clkb_clka = time_clka - time_clkb;
change_clka = ~change_clka;
end
always @(posedge clkb_int) begin
time_clkb = $time;
#0 time_clka_clkb = time_clkb - time_clka;
change_clkb = ~change_clkb;
end
always @(change_clkb) begin
if ((0 < time_clka_clkb) && (time_clka_clkb < SETUP_ALL))
setup_all_a_b = 1;
if ((0 < time_clka_clkb) && (time_clka_clkb < SETUP_READ_FIRST))
setup_rf_a_b = 1;
end
always @(change_clka) begin
if ((0 < time_clkb_clka) && (time_clkb_clka < SETUP_ALL))
setup_all_b_a = 1;
if ((0 < time_clkb_clka) && (time_clkb_clka < SETUP_READ_FIRST))
setup_rf_b_a = 1;
end
always @(change_clkb or change_clka) begin
if ((time_clkb_clka == 0) && (time_clka_clkb == 0))
setup_zero = 1;
end
always @(posedge setup_zero) begin
if ((ena_int == 1) && (wea_int == 1) &&
(enb_int == 1) && (web_int == 1) &&
(data_addra_int[14:2] == data_addrb_int[14:2]))
memory_collision <= 1;
end
always @(posedge setup_all_a_b or posedge setup_rf_a_b) begin
if ((ena_reg == 1) && (wea_reg == 1) &&
(enb_int == 1) && (web_int == 1) &&
(data_addra_reg[14:2] == data_addrb_int[14:2]))
memory_collision_a_b <= 1;
end
always @(posedge setup_all_b_a or posedge setup_rf_b_a) begin
if ((ena_int == 1) && (wea_int == 1) &&
(enb_reg == 1) && (web_reg == 1) &&
(data_addra_int[14:2] == data_addrb_reg[14:2]))
memory_collision_b_a <= 1;
end
always @(posedge setup_all_a_b) begin
if (data_addra_reg[14:2] == data_addrb_int[14:2]) begin
if ((ena_reg == 1) && (enb_int == 1)) begin
case ({wr_mode_a, wr_mode_b, wea_reg, web_int})
6'b000011 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
6'b000111 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
6'b001011 : begin data_collision_a_b <= 2'b10; display_wa_wb; end
// 6'b010011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b010111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b011011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
6'b100011 : begin data_collision_a_b <= 2'b01; display_wa_wb; end
6'b100111 : begin data_collision_a_b <= 2'b01; display_wa_wb; end
6'b101011 : begin display_wa_wb; end
6'b000001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
// 6'b000101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
6'b001001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
6'b010001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
// 6'b010101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
6'b011001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
6'b100001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
// 6'b100101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
6'b101001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
6'b000010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b000110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b001010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
// 6'b010010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b010110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b011010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
6'b100010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b100110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b101010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
endcase
end
end
setup_all_a_b <= 0;
end
always @(posedge setup_all_b_a) begin
if (data_addra_int[14:2] == data_addrb_reg[14:2]) begin
if ((ena_int == 1) && (enb_reg == 1)) begin
case ({wr_mode_a, wr_mode_b, wea_int, web_reg})
6'b000011 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
// 6'b000111 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
6'b001011 : begin data_collision_b_a <= 2'b10; display_wa_wb; end
6'b010011 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
// 6'b010111 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
6'b011011 : begin data_collision_b_a <= 2'b10; display_wa_wb; end
6'b100011 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
6'b100111 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
6'b101011 : begin display_wa_wb; end
6'b000001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b000101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b001001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b010001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b010101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b011001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b100001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b100101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b101001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b000010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
6'b000110 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
6'b001010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
// 6'b010010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b010110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b011010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
6'b100010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
6'b100110 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
6'b101010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
endcase
end
end
setup_all_b_a <= 0;
end
always @(posedge setup_zero) begin
if (data_addra_int[14:2] == data_addrb_int[14:2]) begin
if ((ena_int == 1) && (enb_int == 1)) begin
case ({wr_mode_a, wr_mode_b, wea_int, web_int})
6'b000011 : begin data_collision <= 2'b11; display_wa_wb; end
6'b000111 : begin data_collision <= 2'b11; display_wa_wb; end
6'b001011 : begin data_collision <= 2'b10; display_wa_wb; end
6'b010011 : begin data_collision <= 2'b11; display_wa_wb; end
6'b010111 : begin data_collision <= 2'b11; display_wa_wb; end
6'b011011 : begin data_collision <= 2'b10; display_wa_wb; end
6'b100011 : begin data_collision <= 2'b01; display_wa_wb; end
6'b100111 : begin data_collision <= 2'b01; display_wa_wb; end
6'b101011 : begin display_wa_wb; end
6'b000001 : begin data_collision <= 2'b10; display_ra_wb; end
// 6'b000101 : begin data_collision <= 2'b00; display_ra_wb; end
6'b001001 : begin data_collision <= 2'b10; display_ra_wb; end
6'b010001 : begin data_collision <= 2'b10; display_ra_wb; end
// 6'b010101 : begin data_collision <= 2'b00; display_ra_wb; end
6'b011001 : begin data_collision <= 2'b10; display_ra_wb; end
6'b100001 : begin data_collision <= 2'b10; display_ra_wb; end
// 6'b100101 : begin data_collision <= 2'b00; display_ra_wb; end
6'b101001 : begin data_collision <= 2'b10; display_ra_wb; end
6'b000010 : begin data_collision <= 2'b01; display_wa_rb; end
6'b000110 : begin data_collision <= 2'b01; display_wa_rb; end
6'b001010 : begin data_collision <= 2'b01; display_wa_rb; end
// 6'b010010 : begin data_collision <= 2'b00; display_wa_rb; end
// 6'b010110 : begin data_collision <= 2'b00; display_wa_rb; end
// 6'b011010 : begin data_collision <= 2'b00; display_wa_rb; end
6'b100010 : begin data_collision <= 2'b01; display_wa_rb; end
6'b100110 : begin data_collision <= 2'b01; display_wa_rb; end
6'b101010 : begin data_collision <= 2'b01; display_wa_rb; end
endcase
end
end
setup_zero <= 0;
end
task display_ra_wb;
begin
if (display_flag)
$display("Memory Collision Error on RAMB16_S2_S4:%m at simulation time %.3f ns\nA read was performed on address %h (hex) of Port A while a write was requested to the same address on Port B. The write will be successful however the read value on Port A is unknown until the next CLKA cycle.", $time/1000.0, addra_int);
end
endtask
task display_wa_rb;
begin
if (display_flag)
$display("Memory Collision Error on RAMB16_S2_S4:%m at simulation time %.3f ns\nA read was performed on address %h (hex) of Port B while a write was requested to the same address on Port A. The write will be successful however the read value on Port B is unknown until the next CLKB cycle.", $time/1000.0, addrb_int);
end
endtask
task display_wa_wb;
begin
if (display_flag)
$display("Memory Collision Error on RAMB16_S2_S4:%m at simulation time %.3f ns\nA write was requested to the same address simultaneously at both Port A and Port B of the RAM. The contents written to the RAM at address location %h (hex) of Port A and address location %h (hex) of Port B are unknown.", $time/1000.0, addra_int, addrb_int);
end
endtask
always @(posedge setup_rf_a_b) begin
if (data_addra_reg[14:2] == data_addrb_int[14:2]) begin
if ((ena_reg == 1) && (enb_int == 1)) begin
case ({wr_mode_a, wr_mode_b, wea_reg, web_int})
// 6'b000011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b000111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b001011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
6'b010011 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
6'b010111 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
6'b011011 : begin data_collision_a_b <= 2'b10; display_wa_wb; end
// 6'b100011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b100111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b101011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b000001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b000101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b001001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b010001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b010101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b011001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b100001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b100101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b101001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b000010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b000110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b001010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
6'b010010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b010110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b011010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
// 6'b100010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b100110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b101010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
endcase
end
end
setup_rf_a_b <= 0;
end
always @(posedge setup_rf_b_a) begin
if (data_addra_int[14:2] == data_addrb_reg[14:2]) begin
if ((ena_int == 1) && (enb_reg == 1)) begin
case ({wr_mode_a, wr_mode_b, wea_int, web_reg})
// 6'b000011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
6'b000111 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
// 6'b001011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
// 6'b010011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
6'b010111 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
// 6'b011011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
// 6'b100011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
6'b100111 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
// 6'b101011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
// 6'b000001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
6'b000101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
// 6'b001001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
// 6'b010001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
6'b010101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
// 6'b011001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
// 6'b100001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
6'b100101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
// 6'b101001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
// 6'b000010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b000110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b001010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b010010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b010110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b011010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b100010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b100110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b101010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
endcase
end
end
setup_rf_b_a <= 0;
end
always @(posedge clka_int) begin
addra_reg <= addra_int;
ena_reg <= ena_int;
ssra_reg <= ssra_int;
wea_reg <= wea_int;
end
always @(posedge clkb_int) begin
addrb_reg <= addrb_int;
enb_reg <= enb_int;
ssrb_reg <= ssrb_int;
web_reg <= web_int;
end
// Data
always @(posedge memory_collision) begin
for (dmi = 0; dmi < 2; dmi = dmi + 1) begin
mem[data_addra_int + dmi] <= 1'bX;
end
memory_collision <= 0;
end
always @(posedge memory_collision_a_b) begin
for (dmi = 0; dmi < 2; dmi = dmi + 1) begin
mem[data_addra_reg + dmi] <= 1'bX;
end
memory_collision_a_b <= 0;
end
always @(posedge memory_collision_b_a) begin
for (dmi = 0; dmi < 2; dmi = dmi + 1) begin
mem[data_addra_int + dmi] <= 1'bX;
end
memory_collision_b_a <= 0;
end
always @(posedge data_collision[1]) begin
if (ssra_int == 0) begin
doa_out <= 2'bX;
end
data_collision[1] <= 0;
end
always @(posedge data_collision[0]) begin
if (ssrb_int == 0) begin
for (dbi = 0; dbi < 2; dbi = dbi + 1) begin
dob_out[data_addra_int[1 : 0] + dbi] <= 1'bX;
end
end
data_collision[0] <= 0;
end
always @(posedge data_collision_a_b[1]) begin
if (ssra_reg == 0) begin
doa_out <= 2'bX;
end
data_collision_a_b[1] <= 0;
end
always @(posedge data_collision_a_b[0]) begin
if (ssrb_int == 0) begin
for (dbi = 0; dbi < 2; dbi = dbi + 1) begin
dob_out[data_addra_reg[1 : 0] + dbi] <= 1'bX;
end
end
data_collision_a_b[0] <= 0;
end
always @(posedge data_collision_b_a[1]) begin
if (ssra_int == 0) begin
doa_out <= 2'bX;
end
data_collision_b_a[1] <= 0;
end
always @(posedge data_collision_b_a[0]) begin
if (ssrb_reg == 0) begin
for (dbi = 0; dbi < 2; dbi = dbi + 1) begin
dob_out[data_addra_int[1 : 0] + dbi] <= 1'bX;
end
end
data_collision_b_a[0] <= 0;
end
initial begin
case (WRITE_MODE_A)
"WRITE_FIRST" : wr_mode_a <= 2'b00;
"READ_FIRST" : wr_mode_a <= 2'b01;
"NO_CHANGE" : wr_mode_a <= 2'b10;
default : begin
$display("Attribute Syntax Error : The Attribute WRITE_MODE_A on RAMB16_S2_S4 instance %m is set to %s. Legal values for this attribute are WRITE_FIRST, READ_FIRST or NO_CHANGE.", WRITE_MODE_A);
$finish;
end
endcase
end
initial begin
case (WRITE_MODE_B)
"WRITE_FIRST" : wr_mode_b <= 2'b00;
"READ_FIRST" : wr_mode_b <= 2'b01;
"NO_CHANGE" : wr_mode_b <= 2'b10;
default : begin
$display("Attribute Syntax Error : The Attribute WRITE_MODE_B on RAMB16_S2_S4 instance %m is set to %s. Legal values for this attribute are WRITE_FIRST, READ_FIRST or NO_CHANGE.", WRITE_MODE_B);
$finish;
end
endcase
end
// Port A
always @(posedge clka_int) begin
if (ena_int == 1'b1) begin
if (ssra_int == 1'b1) begin
doa_out[0] <= SRVAL_A[0];
doa_out[1] <= SRVAL_A[1];
end
else begin
if (wea_int == 1'b1) begin
if (wr_mode_a == 2'b00) begin
doa_out <= dia_int;
end
else if (wr_mode_a == 2'b01) begin
doa_out[0] <= mem[data_addra_int + 0];
doa_out[1] <= mem[data_addra_int + 1];
end
end
else begin
doa_out[0] <= mem[data_addra_int + 0];
doa_out[1] <= mem[data_addra_int + 1];
end
end
end
end
always @(posedge clka_int) begin
if (ena_int == 1'b1 && wea_int == 1'b1) begin
mem[data_addra_int + 0] <= dia_int[0];
mem[data_addra_int + 1] <= dia_int[1];
end
end
// Port B
always @(posedge clkb_int) begin
if (enb_int == 1'b1) begin
if (ssrb_int == 1'b1) begin
dob_out[0] <= SRVAL_B[0];
dob_out[1] <= SRVAL_B[1];
dob_out[2] <= SRVAL_B[2];
dob_out[3] <= SRVAL_B[3];
end
else begin
if (web_int == 1'b1) begin
if (wr_mode_b == 2'b00) begin
dob_out <= dib_int;
end
else if (wr_mode_b == 2'b01) begin
dob_out[0] <= mem[data_addrb_int + 0];
dob_out[1] <= mem[data_addrb_int + 1];
dob_out[2] <= mem[data_addrb_int + 2];
dob_out[3] <= mem[data_addrb_int + 3];
end
end
else begin
dob_out[0] <= mem[data_addrb_int + 0];
dob_out[1] <= mem[data_addrb_int + 1];
dob_out[2] <= mem[data_addrb_int + 2];
dob_out[3] <= mem[data_addrb_int + 3];
end
end
end
end
always @(posedge clkb_int) begin
if (enb_int == 1'b1 && web_int == 1'b1) begin
mem[data_addrb_int + 0] <= dib_int[0];
mem[data_addrb_int + 1] <= dib_int[1];
mem[data_addrb_int + 2] <= dib_int[2];
mem[data_addrb_int + 3] <= dib_int[3];
end
end
specify
(CLKA *> DOA) = (100, 100);
(CLKB *> DOB) = (100, 100);
endspecify
endmodule
`else
// $Header: /devl/xcs/repo/env/Databases/CAEInterfaces/verunilibs/data/unisims/RAMB16_S2_S4.v,v 1.10.158.2 2007/03/09 18:13:18 patrickp Exp $
///////////////////////////////////////////////////////////////////////////////
// Copyright (c) 1995/2005 Xilinx, Inc.
// All Right Reserved.
///////////////////////////////////////////////////////////////////////////////
// ____ ____
// / /\/ /
// /___/ \ / Vendor : Xilinx
// \ \ \/ Version : 8.1i (I.13)
// \ \ Description : Xilinx Timing Simulation Library Component
// / / 16K-Bit Data and 2K-Bit Parity Dual Port Block RAM
// /___/ /\ Filename : RAMB16_S2_S4.v
// \ \ / \ Timestamp : Thu Mar 10 16:44:01 PST 2005
// \___\/\___\
//
// Revision:
// 03/23/04 - Initial version.
// 03/10/05 - Initialized outputs.
// 02/21/07 - Fixed parameter SIM_COLLISION_CHECK (CR 433281).
// End Revision
`timescale 1 ps/1 ps
module RAMB16_S2_S4 (DOA, DOB, ADDRA, ADDRB, CLKA, CLKB, DIA, DIB, ENA, ENB, SSRA, SSRB, WEA, WEB);
parameter INIT_A = 2'h0;
parameter INIT_B = 4'h0;
parameter SRVAL_A = 2'h0;
parameter SRVAL_B = 4'h0;
parameter WRITE_MODE_A = "WRITE_FIRST";
parameter WRITE_MODE_B = "WRITE_FIRST";
parameter SIM_COLLISION_CHECK = "ALL";
localparam SETUP_ALL = 1000;
localparam SETUP_READ_FIRST = 3000;
parameter INIT_00 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_01 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_02 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_03 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_04 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_05 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_06 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_07 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_08 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_09 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_0F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_10 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_11 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_12 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_13 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_14 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_15 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_16 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_17 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_18 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_19 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_1F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_20 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_21 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_22 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_23 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_24 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_25 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_26 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_27 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_28 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_29 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_2F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_30 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_31 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_32 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_33 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_34 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_35 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_36 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_37 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_38 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_39 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3A = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3B = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3C = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3D = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3E = 256'h0000000000000000000000000000000000000000000000000000000000000000;
parameter INIT_3F = 256'h0000000000000000000000000000000000000000000000000000000000000000;
output [1:0] DOA;
output [3:0] DOB;
input [12:0] ADDRA;
input [1:0] DIA;
input ENA, CLKA, WEA, SSRA;
input [11:0] ADDRB;
input [3:0] DIB;
input ENB, CLKB, WEB, SSRB;
reg [1:0] doa_out = INIT_A[1:0];
reg [3:0] dob_out = INIT_B[3:0];
reg [3:0] mem [4095:0];
reg [8:0] count, countp;
reg [1:0] wr_mode_a, wr_mode_b;
reg [5:0] dmi, dbi;
reg [5:0] pmi, pbi;
wire [12:0] addra_int;
reg [12:0] addra_reg;
wire [1:0] dia_int;
wire ena_int, clka_int, wea_int, ssra_int;
reg ena_reg, wea_reg, ssra_reg;
wire [11:0] addrb_int;
reg [11:0] addrb_reg;
wire [3:0] dib_int;
wire enb_int, clkb_int, web_int, ssrb_int;
reg display_flag, output_flag;
reg enb_reg, web_reg, ssrb_reg;
time time_clka, time_clkb;
time time_clka_clkb;
time time_clkb_clka;
reg setup_all_a_b;
reg setup_all_b_a;
reg setup_zero;
reg setup_rf_a_b;
reg setup_rf_b_a;
reg [1:0] data_collision, data_collision_a_b, data_collision_b_a;
reg memory_collision, memory_collision_a_b, memory_collision_b_a;
reg change_clka;
reg change_clkb;
wire [14:0] data_addra_int;
wire [14:0] data_addra_reg;
wire [14:0] data_addrb_int;
wire [14:0] data_addrb_reg;
wire dia_enable = ena_int && wea_int;
wire dib_enable = enb_int && web_int;
tri0 GSR = glbl.GSR;
wire gsr_int;
buf b_gsr (gsr_int, GSR);
buf b_doa [1:0] (DOA, doa_out);
buf b_addra [12:0] (addra_int, ADDRA);
buf b_dia [1:0] (dia_int, DIA);
buf b_ena (ena_int, ENA);
buf b_clka (clka_int, CLKA);
buf b_ssra (ssra_int, SSRA);
buf b_wea (wea_int, WEA);
buf b_dob [3:0] (DOB, dob_out);
buf b_addrb [11:0] (addrb_int, ADDRB);
buf b_dib [3:0] (dib_int, DIB);
buf b_enb (enb_int, ENB);
buf b_clkb (clkb_int, CLKB);
buf b_ssrb (ssrb_int, SSRB);
buf b_web (web_int, WEB);
always @(gsr_int)
if (gsr_int) begin
assign {doa_out} = INIT_A;
assign {dob_out} = INIT_B;
end
else begin
deassign doa_out;
deassign dob_out;
end
initial begin
for (count = 0; count < 64; count = count + 1) begin
mem[count] = INIT_00[(count * 4) +: 4];
mem[64 * 1 + count] = INIT_01[(count * 4) +: 4];
mem[64 * 2 + count] = INIT_02[(count * 4) +: 4];
mem[64 * 3 + count] = INIT_03[(count * 4) +: 4];
mem[64 * 4 + count] = INIT_04[(count * 4) +: 4];
mem[64 * 5 + count] = INIT_05[(count * 4) +: 4];
mem[64 * 6 + count] = INIT_06[(count * 4) +: 4];
mem[64 * 7 + count] = INIT_07[(count * 4) +: 4];
mem[64 * 8 + count] = INIT_08[(count * 4) +: 4];
mem[64 * 9 + count] = INIT_09[(count * 4) +: 4];
mem[64 * 10 + count] = INIT_0A[(count * 4) +: 4];
mem[64 * 11 + count] = INIT_0B[(count * 4) +: 4];
mem[64 * 12 + count] = INIT_0C[(count * 4) +: 4];
mem[64 * 13 + count] = INIT_0D[(count * 4) +: 4];
mem[64 * 14 + count] = INIT_0E[(count * 4) +: 4];
mem[64 * 15 + count] = INIT_0F[(count * 4) +: 4];
mem[64 * 16 + count] = INIT_10[(count * 4) +: 4];
mem[64 * 17 + count] = INIT_11[(count * 4) +: 4];
mem[64 * 18 + count] = INIT_12[(count * 4) +: 4];
mem[64 * 19 + count] = INIT_13[(count * 4) +: 4];
mem[64 * 20 + count] = INIT_14[(count * 4) +: 4];
mem[64 * 21 + count] = INIT_15[(count * 4) +: 4];
mem[64 * 22 + count] = INIT_16[(count * 4) +: 4];
mem[64 * 23 + count] = INIT_17[(count * 4) +: 4];
mem[64 * 24 + count] = INIT_18[(count * 4) +: 4];
mem[64 * 25 + count] = INIT_19[(count * 4) +: 4];
mem[64 * 26 + count] = INIT_1A[(count * 4) +: 4];
mem[64 * 27 + count] = INIT_1B[(count * 4) +: 4];
mem[64 * 28 + count] = INIT_1C[(count * 4) +: 4];
mem[64 * 29 + count] = INIT_1D[(count * 4) +: 4];
mem[64 * 30 + count] = INIT_1E[(count * 4) +: 4];
mem[64 * 31 + count] = INIT_1F[(count * 4) +: 4];
mem[64 * 32 + count] = INIT_20[(count * 4) +: 4];
mem[64 * 33 + count] = INIT_21[(count * 4) +: 4];
mem[64 * 34 + count] = INIT_22[(count * 4) +: 4];
mem[64 * 35 + count] = INIT_23[(count * 4) +: 4];
mem[64 * 36 + count] = INIT_24[(count * 4) +: 4];
mem[64 * 37 + count] = INIT_25[(count * 4) +: 4];
mem[64 * 38 + count] = INIT_26[(count * 4) +: 4];
mem[64 * 39 + count] = INIT_27[(count * 4) +: 4];
mem[64 * 40 + count] = INIT_28[(count * 4) +: 4];
mem[64 * 41 + count] = INIT_29[(count * 4) +: 4];
mem[64 * 42 + count] = INIT_2A[(count * 4) +: 4];
mem[64 * 43 + count] = INIT_2B[(count * 4) +: 4];
mem[64 * 44 + count] = INIT_2C[(count * 4) +: 4];
mem[64 * 45 + count] = INIT_2D[(count * 4) +: 4];
mem[64 * 46 + count] = INIT_2E[(count * 4) +: 4];
mem[64 * 47 + count] = INIT_2F[(count * 4) +: 4];
mem[64 * 48 + count] = INIT_30[(count * 4) +: 4];
mem[64 * 49 + count] = INIT_31[(count * 4) +: 4];
mem[64 * 50 + count] = INIT_32[(count * 4) +: 4];
mem[64 * 51 + count] = INIT_33[(count * 4) +: 4];
mem[64 * 52 + count] = INIT_34[(count * 4) +: 4];
mem[64 * 53 + count] = INIT_35[(count * 4) +: 4];
mem[64 * 54 + count] = INIT_36[(count * 4) +: 4];
mem[64 * 55 + count] = INIT_37[(count * 4) +: 4];
mem[64 * 56 + count] = INIT_38[(count * 4) +: 4];
mem[64 * 57 + count] = INIT_39[(count * 4) +: 4];
mem[64 * 58 + count] = INIT_3A[(count * 4) +: 4];
mem[64 * 59 + count] = INIT_3B[(count * 4) +: 4];
mem[64 * 60 + count] = INIT_3C[(count * 4) +: 4];
mem[64 * 61 + count] = INIT_3D[(count * 4) +: 4];
mem[64 * 62 + count] = INIT_3E[(count * 4) +: 4];
mem[64 * 63 + count] = INIT_3F[(count * 4) +: 4];
end
change_clka <= 0;
change_clkb <= 0;
data_collision <= 0;
data_collision_a_b <= 0;
data_collision_b_a <= 0;
memory_collision <= 0;
memory_collision_a_b <= 0;
memory_collision_b_a <= 0;
setup_all_a_b <= 0;
setup_all_b_a <= 0;
setup_zero <= 0;
setup_rf_a_b <= 0;
setup_rf_b_a <= 0;
end
assign data_addra_int = addra_int * 2;
assign data_addra_reg = addra_reg * 2;
assign data_addrb_int = addrb_int * 4;
assign data_addrb_reg = addrb_reg * 4;
initial begin
display_flag = 1;
output_flag = 1;
case (SIM_COLLISION_CHECK)
"NONE" : begin
output_flag = 0;
display_flag = 0;
end
"WARNING_ONLY" : output_flag = 0;
"GENERATE_X_ONLY" : display_flag = 0;
"ALL" : ;
default : begin
$display("Attribute Syntax Error : The Attribute SIM_COLLISION_CHECK on RAMB16_S2_S4 instance %m is set to %s. Legal values for this attribute are ALL, NONE, WARNING_ONLY or GENERATE_X_ONLY.", SIM_COLLISION_CHECK);
$finish;
end
endcase // case(SIM_COLLISION_CHECK)
end // initial begin
always @(posedge clka_int) begin
if ((output_flag || display_flag)) begin
time_clka = $time;
#0 time_clkb_clka = time_clka - time_clkb;
change_clka = ~change_clka;
end
end
always @(posedge clkb_int) begin
if ((output_flag || display_flag)) begin
time_clkb = $time;
#0 time_clka_clkb = time_clkb - time_clka;
change_clkb = ~change_clkb;
end
end
always @(change_clkb) begin
if ((0 < time_clka_clkb) && (time_clka_clkb < SETUP_ALL))
setup_all_a_b = 1;
if ((0 < time_clka_clkb) && (time_clka_clkb < SETUP_READ_FIRST))
setup_rf_a_b = 1;
end
always @(change_clka) begin
if ((0 < time_clkb_clka) && (time_clkb_clka < SETUP_ALL))
setup_all_b_a = 1;
if ((0 < time_clkb_clka) && (time_clkb_clka < SETUP_READ_FIRST))
setup_rf_b_a = 1;
end
always @(change_clkb or change_clka) begin
if ((time_clkb_clka == 0) && (time_clka_clkb == 0))
setup_zero = 1;
end
always @(posedge setup_zero) begin
if ((ena_int == 1) && (wea_int == 1) &&
(enb_int == 1) && (web_int == 1) &&
(data_addra_int[14:2] == data_addrb_int[14:2]))
memory_collision <= 1;
end
always @(posedge setup_all_a_b or posedge setup_rf_a_b) begin
if ((ena_reg == 1) && (wea_reg == 1) &&
(enb_int == 1) && (web_int == 1) &&
(data_addra_reg[14:2] == data_addrb_int[14:2]))
memory_collision_a_b <= 1;
end
always @(posedge setup_all_b_a or posedge setup_rf_b_a) begin
if ((ena_int == 1) && (wea_int == 1) &&
(enb_reg == 1) && (web_reg == 1) &&
(data_addra_int[14:2] == data_addrb_reg[14:2]))
memory_collision_b_a <= 1;
end
always @(posedge setup_all_a_b) begin
if (data_addra_reg[14:2] == data_addrb_int[14:2]) begin
if ((ena_reg == 1) && (enb_int == 1)) begin
case ({wr_mode_a, wr_mode_b, wea_reg, web_int})
6'b000011 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
6'b000111 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
6'b001011 : begin data_collision_a_b <= 2'b10; display_wa_wb; end
// 6'b010011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b010111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b011011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
6'b100011 : begin data_collision_a_b <= 2'b01; display_wa_wb; end
6'b100111 : begin data_collision_a_b <= 2'b01; display_wa_wb; end
6'b101011 : begin display_wa_wb; end
6'b000001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
// 6'b000101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
6'b001001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
6'b010001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
// 6'b010101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
6'b011001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
6'b100001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
// 6'b100101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
6'b101001 : begin data_collision_a_b <= 2'b10; display_ra_wb; end
6'b000010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b000110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b001010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
// 6'b010010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b010110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b011010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
6'b100010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b100110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b101010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
endcase
end
end
setup_all_a_b <= 0;
end
always @(posedge setup_all_b_a) begin
if (data_addra_int[14:2] == data_addrb_reg[14:2]) begin
if ((ena_int == 1) && (enb_reg == 1)) begin
case ({wr_mode_a, wr_mode_b, wea_int, web_reg})
6'b000011 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
// 6'b000111 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
6'b001011 : begin data_collision_b_a <= 2'b10; display_wa_wb; end
6'b010011 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
// 6'b010111 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
6'b011011 : begin data_collision_b_a <= 2'b10; display_wa_wb; end
6'b100011 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
6'b100111 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
6'b101011 : begin display_wa_wb; end
6'b000001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b000101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b001001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b010001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b010101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b011001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b100001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b100101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b101001 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
6'b000010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
6'b000110 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
6'b001010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
// 6'b010010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b010110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b011010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
6'b100010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
6'b100110 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
6'b101010 : begin data_collision_b_a <= 2'b01; display_wa_rb; end
endcase
end
end
setup_all_b_a <= 0;
end
always @(posedge setup_zero) begin
if (data_addra_int[14:2] == data_addrb_int[14:2]) begin
if ((ena_int == 1) && (enb_int == 1)) begin
case ({wr_mode_a, wr_mode_b, wea_int, web_int})
6'b000011 : begin data_collision <= 2'b11; display_wa_wb; end
6'b000111 : begin data_collision <= 2'b11; display_wa_wb; end
6'b001011 : begin data_collision <= 2'b10; display_wa_wb; end
6'b010011 : begin data_collision <= 2'b11; display_wa_wb; end
6'b010111 : begin data_collision <= 2'b11; display_wa_wb; end
6'b011011 : begin data_collision <= 2'b10; display_wa_wb; end
6'b100011 : begin data_collision <= 2'b01; display_wa_wb; end
6'b100111 : begin data_collision <= 2'b01; display_wa_wb; end
6'b101011 : begin display_wa_wb; end
6'b000001 : begin data_collision <= 2'b10; display_ra_wb; end
// 6'b000101 : begin data_collision <= 2'b00; display_ra_wb; end
6'b001001 : begin data_collision <= 2'b10; display_ra_wb; end
6'b010001 : begin data_collision <= 2'b10; display_ra_wb; end
// 6'b010101 : begin data_collision <= 2'b00; display_ra_wb; end
6'b011001 : begin data_collision <= 2'b10; display_ra_wb; end
6'b100001 : begin data_collision <= 2'b10; display_ra_wb; end
// 6'b100101 : begin data_collision <= 2'b00; display_ra_wb; end
6'b101001 : begin data_collision <= 2'b10; display_ra_wb; end
6'b000010 : begin data_collision <= 2'b01; display_wa_rb; end
6'b000110 : begin data_collision <= 2'b01; display_wa_rb; end
6'b001010 : begin data_collision <= 2'b01; display_wa_rb; end
// 6'b010010 : begin data_collision <= 2'b00; display_wa_rb; end
// 6'b010110 : begin data_collision <= 2'b00; display_wa_rb; end
// 6'b011010 : begin data_collision <= 2'b00; display_wa_rb; end
6'b100010 : begin data_collision <= 2'b01; display_wa_rb; end
6'b100110 : begin data_collision <= 2'b01; display_wa_rb; end
6'b101010 : begin data_collision <= 2'b01; display_wa_rb; end
endcase
end
end
setup_zero <= 0;
end
task display_ra_wb;
begin
if (display_flag)
$display("Memory Collision Error on RAMB16_S2_S4:%m at simulation time %.3f ns\nA read was performed on address %h (hex) of Port A while a write was requested to the same address on Port B. The write will be successful however the read value on Port A is unknown until the next CLKA cycle.", $time/1000.0, addra_int);
end
endtask
task display_wa_rb;
begin
if (display_flag)
$display("Memory Collision Error on RAMB16_S2_S4:%m at simulation time %.3f ns\nA read was performed on address %h (hex) of Port B while a write was requested to the same address on Port A. The write will be successful however the read value on Port B is unknown until the next CLKB cycle.", $time/1000.0, addrb_int);
end
endtask
task display_wa_wb;
begin
if (display_flag)
$display("Memory Collision Error on RAMB16_S2_S4:%m at simulation time %.3f ns\nA write was requested to the same address simultaneously at both Port A and Port B of the RAM. The contents written to the RAM at address location %h (hex) of Port A and address location %h (hex) of Port B are unknown.", $time/1000.0, addra_int, addrb_int);
end
endtask
always @(posedge setup_rf_a_b) begin
if (data_addra_reg[14:2] == data_addrb_int[14:2]) begin
if ((ena_reg == 1) && (enb_int == 1)) begin
case ({wr_mode_a, wr_mode_b, wea_reg, web_int})
// 6'b000011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b000111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b001011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
6'b010011 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
6'b010111 : begin data_collision_a_b <= 2'b11; display_wa_wb; end
6'b011011 : begin data_collision_a_b <= 2'b10; display_wa_wb; end
// 6'b100011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b100111 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b101011 : begin data_collision_a_b <= 2'b00; display_wa_wb; end
// 6'b000001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b000101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b001001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b010001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b010101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b011001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b100001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b100101 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b101001 : begin data_collision_a_b <= 2'b00; display_ra_wb; end
// 6'b000010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b000110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b001010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
6'b010010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b010110 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
6'b011010 : begin data_collision_a_b <= 2'b01; display_wa_rb; end
// 6'b100010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b100110 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
// 6'b101010 : begin data_collision_a_b <= 2'b00; display_wa_rb; end
endcase
end
end
setup_rf_a_b <= 0;
end
always @(posedge setup_rf_b_a) begin
if (data_addra_int[14:2] == data_addrb_reg[14:2]) begin
if ((ena_int == 1) && (enb_reg == 1)) begin
case ({wr_mode_a, wr_mode_b, wea_int, web_reg})
// 6'b000011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
6'b000111 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
// 6'b001011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
// 6'b010011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
6'b010111 : begin data_collision_b_a <= 2'b11; display_wa_wb; end
// 6'b011011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
// 6'b100011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
6'b100111 : begin data_collision_b_a <= 2'b01; display_wa_wb; end
// 6'b101011 : begin data_collision_b_a <= 2'b00; display_wa_wb; end
// 6'b000001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
6'b000101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
// 6'b001001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
// 6'b010001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
6'b010101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
// 6'b011001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
// 6'b100001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
6'b100101 : begin data_collision_b_a <= 2'b10; display_ra_wb; end
// 6'b101001 : begin data_collision_b_a <= 2'b00; display_ra_wb; end
// 6'b000010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b000110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b001010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b010010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b010110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b011010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b100010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b100110 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
// 6'b101010 : begin data_collision_b_a <= 2'b00; display_wa_rb; end
endcase
end
end
setup_rf_b_a <= 0;
end
always @(posedge clka_int) begin
if ((output_flag || display_flag)) begin
addra_reg <= addra_int;
ena_reg <= ena_int;
ssra_reg <= ssra_int;
wea_reg <= wea_int;
end
end
always @(posedge clkb_int) begin
if ((output_flag || display_flag)) begin
addrb_reg <= addrb_int;
enb_reg <= enb_int;
ssrb_reg <= ssrb_int;
web_reg <= web_int;
end
end
// Data
always @(posedge memory_collision) begin
if ((output_flag || display_flag)) begin
mem[addra_int[12:1]][addra_int[0:0] * 2 +: 2] <= 2'bx;
memory_collision <= 0;
end
end
always @(posedge memory_collision_a_b) begin
if ((output_flag || display_flag)) begin
mem[addra_reg[12:1]][addra_reg[0:0] * 2 +: 2] <= 2'bx;
memory_collision_a_b <= 0;
end
end
always @(posedge memory_collision_b_a) begin
if ((output_flag || display_flag)) begin
mem[addra_int[12:1]][addra_int[0:0] * 2 +: 2] <= 2'bx;
memory_collision_b_a <= 0;
end
end
always @(posedge data_collision[1]) begin
if (ssra_int == 0 && output_flag) begin
doa_out <= #100 2'bX;
end
data_collision[1] <= 0;
end
always @(posedge data_collision[0]) begin
if (ssrb_int == 0 && output_flag) begin
dob_out[addra_int[0:0] * 2 +: 2] <= #100 2'bX;
end
data_collision[0] <= 0;
end
always @(posedge data_collision_a_b[1]) begin
if (ssra_reg == 0 && output_flag) begin
doa_out <= #100 2'bX;
end
data_collision_a_b[1] <= 0;
end
always @(posedge data_collision_a_b[0]) begin
if (ssrb_int == 0 && output_flag) begin
dob_out[addra_reg[0:0] * 2 +: 2] <= #100 2'bX;
end
data_collision_a_b[0] <= 0;
end
always @(posedge data_collision_b_a[1]) begin
if (ssra_int == 0 && output_flag) begin
doa_out <= #100 2'bX;
end
data_collision_b_a[1] <= 0;
end
always @(posedge data_collision_b_a[0]) begin
if (ssrb_reg == 0 && output_flag) begin
dob_out[addra_int[0:0] * 2 +: 2] <= #100 2'bX;
end
data_collision_b_a[0] <= 0;
end
initial begin
case (WRITE_MODE_A)
"WRITE_FIRST" : wr_mode_a <= 2'b00;
"READ_FIRST" : wr_mode_a <= 2'b01;
"NO_CHANGE" : wr_mode_a <= 2'b10;
default : begin
$display("Attribute Syntax Error : The Attribute WRITE_MODE_A on RAMB16_S2_S4 instance %m is set to %s. Legal values for this attribute are WRITE_FIRST, READ_FIRST or NO_CHANGE.", WRITE_MODE_A);
$finish;
end
endcase
end
initial begin
case (WRITE_MODE_B)
"WRITE_FIRST" : wr_mode_b <= 2'b00;
"READ_FIRST" : wr_mode_b <= 2'b01;
"NO_CHANGE" : wr_mode_b <= 2'b10;
default : begin
$display("Attribute Syntax Error : The Attribute WRITE_MODE_B on RAMB16_S2_S4 instance %m is set to %s. Legal values for this attribute are WRITE_FIRST, READ_FIRST or NO_CHANGE.", WRITE_MODE_B);
$finish;
end
endcase
end
// Port A
always @(posedge clka_int) begin
if (ena_int == 1'b1) begin
if (ssra_int == 1'b1) begin
{doa_out} <= #100 SRVAL_A;
end
else begin
if (wea_int == 1'b1) begin
if (wr_mode_a == 2'b00) begin
doa_out <= #100 dia_int;
end
else if (wr_mode_a == 2'b01) begin
doa_out <= #100 mem[addra_int[12:1]][addra_int[0:0] * 2 +: 2];
end
end
else begin
doa_out <= #100 mem[addra_int[12:1]][addra_int[0:0] * 2 +: 2];
end
end
// memory
if (wea_int == 1'b1) begin
mem[addra_int[12:1]][addra_int[0:0] * 2 +: 2] <= dia_int;
end
end
end
// Port B
always @(posedge clkb_int) begin
if (enb_int == 1'b1) begin
if (ssrb_int == 1'b1) begin
{dob_out} <= #100 SRVAL_B;
end
else begin
if (web_int == 1'b1) begin
if (wr_mode_b == 2'b00) begin
dob_out <= #100 dib_int;
end
else if (wr_mode_b == 2'b01) begin
dob_out <= #100 mem[addrb_int];
end
end
else begin
dob_out <= #100 mem[addrb_int];
end
end
// memory
if (web_int == 1'b1) begin
mem[addrb_int] <= dib_int;
end
end
end
endmodule
`endif
View Git Blame Copy Permalink