//////////////////////////////////////////////////////////////////////
|
//////////////////////////////////////////////////////////////////////
|
//// ////
|
//// ////
|
//// Generic Single-Port Synchronous RAM ////
|
//// Generic Single-Port Synchronous RAM ////
|
//// ////
|
//// ////
|
//// This file is part of memory library available from ////
|
//// This file is part of memory library available from ////
|
//// http://www.opencores.org/cvsweb.shtml/generic_memories/ ////
|
//// http://www.opencores.org/cvsweb.shtml/generic_memories/ ////
|
//// ////
|
//// ////
|
//// Description ////
|
//// Description ////
|
//// This block is a wrapper with common single-port ////
|
//// This block is a wrapper with common single-port ////
|
//// synchronous memory interface for different ////
|
//// synchronous memory interface for different ////
|
//// types of ASIC and FPGA RAMs. Beside universal memory ////
|
//// types of ASIC and FPGA RAMs. Beside universal memory ////
|
//// interface it also provides behavioral model of generic ////
|
//// interface it also provides behavioral model of generic ////
|
//// single-port synchronous RAM. ////
|
//// single-port synchronous RAM. ////
|
//// It should be used in all OPENCORES designs that want to be ////
|
//// It should be used in all OPENCORES designs that want to be ////
|
//// portable accross different target technologies and ////
|
//// portable accross different target technologies and ////
|
//// independent of target memory. ////
|
//// independent of target memory. ////
|
//// ////
|
//// ////
|
//// Supported ASIC RAMs are: ////
|
//// Supported ASIC RAMs are: ////
|
//// - Artisan Single-Port Sync RAM ////
|
//// - Artisan Single-Port Sync RAM ////
|
//// - Avant! Two-Port Sync RAM (*) ////
|
//// - Avant! Two-Port Sync RAM (*) ////
|
//// - Virage Single-Port Sync RAM ////
|
//// - Virage Single-Port Sync RAM ////
|
//// - Virtual Silicon Single-Port Sync RAM ////
|
//// - Virtual Silicon Single-Port Sync RAM ////
|
//// ////
|
//// ////
|
//// Supported FPGA RAMs are: ////
|
//// Supported FPGA RAMs are: ////
|
//// - Xilinx Virtex RAMB4_S16 ////
|
//// - Xilinx Virtex RAMB4_S16 ////
|
//// ////
|
//// ////
|
//// To Do: ////
|
//// To Do: ////
|
//// - xilinx rams need external tri-state logic ////
|
//// - xilinx rams need external tri-state logic ////
|
//// - fix avant! two-port ram ////
|
//// - fix avant! two-port ram ////
|
//// - add additional RAMs (Altera etc) ////
|
//// - add additional RAMs (Altera etc) ////
|
//// ////
|
//// ////
|
//// Author(s): ////
|
//// Author(s): ////
|
//// - Damjan Lampret, lampret@opencores.org ////
|
//// - Damjan Lampret, lampret@opencores.org ////
|
//// ////
|
//// ////
|
//////////////////////////////////////////////////////////////////////
|
//////////////////////////////////////////////////////////////////////
|
//// ////
|
//// ////
|
//// Copyright (C) 2000 Authors and OPENCORES.ORG ////
|
//// Copyright (C) 2000 Authors and OPENCORES.ORG ////
|
//// ////
|
//// ////
|
//// This source file may be used and distributed without ////
|
//// This source file may be used and distributed without ////
|
//// restriction provided that this copyright statement is not ////
|
//// restriction provided that this copyright statement is not ////
|
//// removed from the file and that any derivative work contains ////
|
//// removed from the file and that any derivative work contains ////
|
//// the original copyright notice and the associated disclaimer. ////
|
//// the original copyright notice and the associated disclaimer. ////
|
//// ////
|
//// ////
|
//// This source file is free software; you can redistribute it ////
|
//// This source file is free software; you can redistribute it ////
|
//// and/or modify it under the terms of the GNU Lesser General ////
|
//// and/or modify it under the terms of the GNU Lesser General ////
|
//// Public License as published by the Free Software Foundation; ////
|
//// Public License as published by the Free Software Foundation; ////
|
//// either version 2.1 of the License, or (at your option) any ////
|
//// either version 2.1 of the License, or (at your option) any ////
|
//// later version. ////
|
//// later version. ////
|
//// ////
|
//// ////
|
//// This source is distributed in the hope that it will be ////
|
//// This source is distributed in the hope that it will be ////
|
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
|
//// useful, but WITHOUT ANY WARRANTY; without even the implied ////
|
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
|
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////
|
//// PURPOSE. See the GNU Lesser General Public License for more ////
|
//// PURPOSE. See the GNU Lesser General Public License for more ////
|
//// details. ////
|
//// details. ////
|
//// ////
|
//// ////
|
//// You should have received a copy of the GNU Lesser General ////
|
//// You should have received a copy of the GNU Lesser General ////
|
//// Public License along with this source; if not, download it ////
|
//// Public License along with this source; if not, download it ////
|
//// from http://www.opencores.org/lgpl.shtml ////
|
//// from http://www.opencores.org/lgpl.shtml ////
|
//// ////
|
//// ////
|
//////////////////////////////////////////////////////////////////////
|
//////////////////////////////////////////////////////////////////////
|
//
|
//
|
// CVS Revision History
|
// CVS Revision History
|
//
|
//
|
// $Log: not supported by cvs2svn $
|
// $Log: not supported by cvs2svn $
|
// Revision 1.8 2001/11/02 18:57:14 lampret
|
// Revision 1.8 2001/11/02 18:57:14 lampret
|
// Modified virtual silicon instantiations.
|
// Modified virtual silicon instantiations.
|
//
|
//
|
// Revision 1.7 2001/10/21 17:57:16 lampret
|
// Revision 1.7 2001/10/21 17:57:16 lampret
|
// Removed params from generic_XX.v. Added translate_off/on in sprs.v and id.v. Removed spr_addr from dc.v and ic.v. Fixed CR+LF.
|
// Removed params from generic_XX.v. Added translate_off/on in sprs.v and id.v. Removed spr_addr from dc.v and ic.v. Fixed CR+LF.
|
//
|
//
|
// Revision 1.6 2001/10/14 13:12:09 lampret
|
// Revision 1.6 2001/10/14 13:12:09 lampret
|
// MP3 version.
|
// MP3 version.
|
//
|
//
|
// Revision 1.1.1.1 2001/10/06 10:18:36 igorm
|
// Revision 1.1.1.1 2001/10/06 10:18:36 igorm
|
// no message
|
// no message
|
//
|
//
|
// Revision 1.1 2001/08/09 13:39:33 lampret
|
// Revision 1.1 2001/08/09 13:39:33 lampret
|
// Major clean-up.
|
// Major clean-up.
|
//
|
//
|
// Revision 1.2 2001/07/30 05:38:02 lampret
|
// Revision 1.2 2001/07/30 05:38:02 lampret
|
// Adding empty directories required by HDL coding guidelines
|
// Adding empty directories required by HDL coding guidelines
|
//
|
//
|
//
|
//
|
|
|
// synopsys translate_off
|
// synopsys translate_off
|
`include "timescale.v"
|
`include "timescale.v"
|
// synopsys translate_on
|
// synopsys translate_on
|
`include "or1200_defines.v"
|
`include "or1200_defines.v"
|
|
|
module or1200_spram_2048x32(
|
module or1200_spram_2048x32(
|
// Generic synchronous single-port RAM interface
|
// Generic synchronous single-port RAM interface
|
clk, rst, ce, we, oe, addr, di, do
|
clk, rst, ce, we, oe, addr, di, do
|
);
|
);
|
|
|
//
|
//
|
// Default address and data buses width
|
// Default address and data buses width
|
//
|
//
|
parameter aw = 11;
|
parameter aw = 11;
|
parameter dw = 32;
|
parameter dw = 32;
|
|
|
//
|
//
|
// Generic synchronous single-port RAM interface
|
// Generic synchronous single-port RAM interface
|
//
|
//
|
input clk; // Clock
|
input clk; // Clock
|
input rst; // Reset
|
input rst; // Reset
|
input ce; // Chip enable input
|
input ce; // Chip enable input
|
input we; // Write enable input
|
input we; // Write enable input
|
input oe; // Output enable input
|
input oe; // Output enable input
|
input [aw-1:0] addr; // address bus inputs
|
input [aw-1:0] addr; // address bus inputs
|
input [dw-1:0] di; // input data bus
|
input [dw-1:0] di; // input data bus
|
output [dw-1:0] do; // output data bus
|
output [dw-1:0] do; // output data bus
|
|
|
//
|
//
|
// Internal wires and registers
|
// Internal wires and registers
|
//
|
//
|
|
|
|
|
`ifdef OR1200_ARTISAN_SSP
|
`ifdef OR1200_ARTISAN_SSP
|
|
|
//
|
//
|
// Instantiation of ASIC memory:
|
// Instantiation of ASIC memory:
|
//
|
//
|
// Artisan Synchronous Single-Port RAM (ra1sh)
|
// Artisan Synchronous Single-Port RAM (ra1sh)
|
//
|
//
|
`ifdef UNUSED
|
`ifdef UNUSED
|
art_hdsp_2048x32 #(dw, 1<<aw, aw) artisan_ssp(
|
art_hdsp_2048x32 #(dw, 1<<aw, aw) artisan_ssp(
|
`else
|
`else
|
art_hdsp_2048x32 artisan_ssp(
|
art_hdsp_2048x32 artisan_ssp(
|
`endif
|
`endif
|
.clk(clk),
|
.clk(clk),
|
.cen(~ce),
|
.cen(~ce),
|
.wen(~we),
|
.wen(~we),
|
.a(addr),
|
.a(addr),
|
.d(di),
|
.d(di),
|
.oen(~oe),
|
.oen(~oe),
|
.q(do)
|
.q(do)
|
);
|
);
|
|
|
`else
|
`else
|
|
|
`ifdef OR1200_AVANT_ATP
|
`ifdef OR1200_AVANT_ATP
|
|
|
//
|
//
|
// Instantiation of ASIC memory:
|
// Instantiation of ASIC memory:
|
//
|
//
|
// Avant! Asynchronous Two-Port RAM
|
// Avant! Asynchronous Two-Port RAM
|
//
|
//
|
avant_atp avant_atp(
|
avant_atp avant_atp(
|
.web(~we),
|
.web(~we),
|
.reb(),
|
.reb(),
|
.oeb(~oe),
|
.oeb(~oe),
|
.rcsb(),
|
.rcsb(),
|
.wcsb(),
|
.wcsb(),
|
.ra(addr),
|
.ra(addr),
|
.wa(addr),
|
.wa(addr),
|
.di(di),
|
.di(di),
|
.do(do)
|
.do(do)
|
);
|
);
|
|
|
`else
|
`else
|
|
|
`ifdef OR1200_VIRAGE_SSP
|
`ifdef OR1200_VIRAGE_SSP
|
|
|
//
|
//
|
// Instantiation of ASIC memory:
|
// Instantiation of ASIC memory:
|
//
|
//
|
// Virage Synchronous 1-port R/W RAM
|
// Virage Synchronous 1-port R/W RAM
|
//
|
//
|
virage_ssp virage_ssp(
|
virage_ssp virage_ssp(
|
.clk(clk),
|
.clk(clk),
|
.adr(addr),
|
.adr(addr),
|
.d(di),
|
.d(di),
|
.we(we),
|
.we(we),
|
.oe(oe),
|
.oe(oe),
|
.me(ce),
|
.me(ce),
|
.q(do)
|
.q(do)
|
);
|
);
|
|
|
`else
|
`else
|
|
|
`ifdef OR1200_VIRTUALSILICON_SSP
|
`ifdef OR1200_VIRTUALSILICON_SSP
|
|
|
//
|
//
|
// Instantiation of ASIC memory:
|
// Instantiation of ASIC memory:
|
//
|
//
|
// Virtual Silicon Single-Port Synchronous SRAM
|
// Virtual Silicon Single-Port Synchronous SRAM
|
//
|
//
|
`ifdef UNUSED
|
`ifdef UNUSED
|
vs_hdsp_2048x32 #(1<<aw, aw-1, dw-1) vs_ssp(
|
vs_hdsp_2048x32 #(1<<aw, aw-1, dw-1) vs_ssp(
|
`else
|
`else
|
vs_hdsp_2048x32 vs_ssp(
|
vs_hdsp_2048x32 vs_ssp(
|
`endif
|
`endif
|
.CK(clk),
|
.CK(clk),
|
.ADR(addr),
|
.ADR(addr),
|
.DI(di),
|
.DI(di),
|
.WEN(~we),
|
.WEN(~we),
|
.CEN(~ce),
|
.CEN(~ce),
|
.OEN(~oe),
|
.OEN(~oe),
|
.DOUT(do)
|
.DOUT(do)
|
);
|
);
|
|
|
`else
|
`else
|
|
|
`ifdef OR1200_XILINX_RAMB4
|
`ifdef OR1200_XILINX_RAMB4
|
|
|
//
|
//
|
// Instantiation of FPGA memory:
|
// Instantiation of FPGA memory:
|
//
|
//
|
// Virtex/Spartan2
|
// Virtex/Spartan2
|
//
|
//
|
|
|
//
|
//
|
// Block 0
|
// Block 0
|
//
|
//
|
RAMB4_S2 ramb4_s2_0(
|
RAMB4_S2 ramb4_s2_0(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[1:0]),
|
.DI(di[1:0]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[1:0])
|
.DO(do[1:0])
|
);
|
);
|
|
|
//
|
//
|
// Block 1
|
// Block 1
|
//
|
//
|
RAMB4_S2 ramb4_s2_1(
|
RAMB4_S2 ramb4_s2_1(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[3:2]),
|
.DI(di[3:2]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[3:2])
|
.DO(do[3:2])
|
);
|
);
|
|
|
//
|
//
|
// Block 2
|
// Block 2
|
//
|
//
|
RAMB4_S2 ramb4_s2_2(
|
RAMB4_S2 ramb4_s2_2(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[5:4]),
|
.DI(di[5:4]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[5:4])
|
.DO(do[5:4])
|
);
|
);
|
|
|
//
|
//
|
// Block 3
|
// Block 3
|
//
|
//
|
RAMB4_S2 ramb4_s2_3(
|
RAMB4_S2 ramb4_s2_3(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[7:6]),
|
.DI(di[7:6]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[7:6])
|
.DO(do[7:6])
|
);
|
);
|
|
|
//
|
//
|
// Block 4
|
// Block 4
|
//
|
//
|
RAMB4_S2 ramb4_s2_4(
|
RAMB4_S2 ramb4_s2_4(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[9:8]),
|
.DI(di[9:8]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[9:8])
|
.DO(do[9:8])
|
);
|
);
|
|
|
//
|
//
|
// Block 5
|
// Block 5
|
//
|
//
|
RAMB4_S2 ramb4_s2_5(
|
RAMB4_S2 ramb4_s2_5(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[11:10]),
|
.DI(di[11:10]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[11:10])
|
.DO(do[11:10])
|
);
|
);
|
|
|
//
|
//
|
// Block 6
|
// Block 6
|
//
|
//
|
RAMB4_S2 ramb4_s2_6(
|
RAMB4_S2 ramb4_s2_6(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[13:12]),
|
.DI(di[13:12]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[13:12])
|
.DO(do[13:12])
|
);
|
);
|
|
|
//
|
//
|
// Block 7
|
// Block 7
|
//
|
//
|
RAMB4_S2 ramb4_s2_7(
|
RAMB4_S2 ramb4_s2_7(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[15:14]),
|
.DI(di[15:14]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[15:14])
|
.DO(do[15:14])
|
);
|
);
|
|
|
//
|
//
|
// Block 8
|
// Block 8
|
//
|
//
|
RAMB4_S2 ramb4_s2_8(
|
RAMB4_S2 ramb4_s2_8(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[17:16]),
|
.DI(di[17:16]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[17:16])
|
.DO(do[17:16])
|
);
|
);
|
|
|
//
|
//
|
// Block 9
|
// Block 9
|
//
|
//
|
RAMB4_S2 ramb4_s2_9(
|
RAMB4_S2 ramb4_s2_9(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[19:18]),
|
.DI(di[19:18]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[19:18])
|
.DO(do[19:18])
|
);
|
);
|
|
|
//
|
//
|
// Block 10
|
// Block 10
|
//
|
//
|
RAMB4_S2 ramb4_s2_10(
|
RAMB4_S2 ramb4_s2_10(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[21:20]),
|
.DI(di[21:20]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[21:20])
|
.DO(do[21:20])
|
);
|
);
|
|
|
//
|
//
|
// Block 11
|
// Block 11
|
//
|
//
|
RAMB4_S2 ramb4_s2_11(
|
RAMB4_S2 ramb4_s2_11(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[23:22]),
|
.DI(di[23:22]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[23:22])
|
.DO(do[23:22])
|
);
|
);
|
|
|
//
|
//
|
// Block 12
|
// Block 12
|
//
|
//
|
RAMB4_S2 ramb4_s2_12(
|
RAMB4_S2 ramb4_s2_12(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[25:24]),
|
.DI(di[25:24]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[25:24])
|
.DO(do[25:24])
|
);
|
);
|
|
|
//
|
//
|
// Block 13
|
// Block 13
|
//
|
//
|
RAMB4_S2 ramb4_s2_13(
|
RAMB4_S2 ramb4_s2_13(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[27:26]),
|
.DI(di[27:26]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[27:26])
|
.DO(do[27:26])
|
);
|
);
|
|
|
//
|
//
|
// Block 14
|
// Block 14
|
//
|
//
|
RAMB4_S2 ramb4_s2_14(
|
RAMB4_S2 ramb4_s2_14(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[29:28]),
|
.DI(di[29:28]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[29:28])
|
.DO(do[29:28])
|
);
|
);
|
|
|
//
|
//
|
// Block 15
|
// Block 15
|
//
|
//
|
RAMB4_S2 ramb4_s2_15(
|
RAMB4_S2 ramb4_s2_15(
|
.CLK(clk),
|
.CLK(clk),
|
.RST(rst),
|
.RST(rst),
|
.ADDR(addr),
|
.ADDR(addr),
|
.DI(di[31:30]),
|
.DI(di[31:30]),
|
.EN(ce),
|
.EN(ce),
|
.WE(we),
|
.WE(we),
|
.DO(do[31:30])
|
.DO(do[31:30])
|
);
|
);
|
|
|
`else
|
`else
|
|
|
//
|
//
|
// Generic single-port synchronous RAM model
|
// Generic single-port synchronous RAM model
|
//
|
//
|
|
|
//
|
//
|
// Generic RAM's registers and wires
|
// Generic RAM's registers and wires
|
//
|
//
|
reg [dw-1:0] mem [(1<<aw)-1:0]; // RAM content
|
reg [dw-1:0] mem [(1<<aw)-1:0]; // RAM content
|
reg [dw-1:0] do_reg; // RAM data output register
|
reg [dw-1:0] do_reg; // RAM data output register
|
|
|
//
|
//
|
// Data output drivers
|
// Data output drivers
|
//
|
//
|
assign do = (oe) ? do_reg : {dw{1'bz}};
|
assign do = (oe) ? do_reg : {dw{1'bz}};
|
|
|
//
|
//
|
// RAM read and write
|
// RAM read and write
|
//
|
//
|
always @(posedge clk)
|
always @(posedge clk)
|
if (ce && !we)
|
if (ce && !we)
|
do_reg <= #1 mem[addr];
|
do_reg <= #1 mem[addr];
|
else if (ce && we)
|
else if (ce && we)
|
mem[addr] <= #1 di;
|
mem[addr] <= #1 di;
|
|
|
`endif // !OR1200_XILINX_RAMB4_S16
|
`endif // !OR1200_XILINX_RAMB4_S16
|
`endif // !OR1200_VIRTUALSILICON_SSP
|
`endif // !OR1200_VIRTUALSILICON_SSP
|
`endif // !OR1200_VIRAGE_SSP
|
`endif // !OR1200_VIRAGE_SSP
|
`endif // !OR1200_AVANT_ATP
|
`endif // !OR1200_AVANT_ATP
|
`endif // !OR1200_ARTISAN_SSP
|
`endif // !OR1200_ARTISAN_SSP
|
|
|
endmodule
|
endmodule
|
|
|