URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [or1200/] [rtl/] [verilog/] [or1200_spram_64x24.v] - Blame information for rev 120

Go to most recent revision | Details | Compare with Previous | View Log


//////////////////////////////////////////////////////////////////////
////                                                              ////
////  Generic Single-Port Synchronous RAM                         ////
////                                                              ////
////  This file is part of memory library available from          ////
////  http://www.opencores.org/cvsweb.shtml/generic_memories/     ////
////                                                              ////
////  Description                                                 ////
////  This block is a wrapper with common single-port             ////
////  synchronous memory interface for different                  ////
////  types of ASIC and FPGA RAMs. Beside universal memory        ////
////  interface it also provides behavioral model of generic      ////
////  single-port synchronous RAM.                                ////
////  It should be used in all OPENCORES designs that want to be  ////
////  portable accross different target technologies and          ////
////  independent of target memory.                               ////
////                                                              ////
////  Supported ASIC RAMs are:                                    ////
////  - Artisan Single-Port Sync RAM                              ////
////  - Avant! Two-Port Sync RAM (*)                              ////
////  - Virage Single-Port Sync RAM                               ////
////  - Virtual Silicon Single-Port Sync RAM                      ////
////                                                              ////
////  Supported FPGA RAMs are:                                    ////
////  - Xilinx Virtex RAMB16                                      ////
////  - Xilinx Virtex RAMB4                                       ////
////  - Altera LPM                                                ////
////                                                              ////
////  To Do:                                                      ////
////   - xilinx rams need external tri-state logic                ////
////   - fix avant! two-port ram                                  ////
////   - add additional RAMs                                      ////
////                                                              ////
////  Author(s):                                                  ////
////      - Damjan Lampret, lampret@opencores.org                 ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2000 Authors and OPENCORES.ORG                 ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file is free software; you can redistribute it   ////
//// and/or modify it under the terms of the GNU Lesser General   ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source is distributed in the hope that it will be       ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
//// PURPOSE.  See the GNU Lesser General Public License for more ////
//// details.                                                     ////
////                                                              ////
//// You should have received a copy of the GNU Lesser General    ////
//// Public License along with this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
//
// CVS Revision History
//
// $Log: not supported by cvs2svn $
// Revision 1.8  2004/06/08 18:15:32  lampret
// Changed behavior of the simulation generic models
//
// Revision 1.7  2004/04/05 08:29:57  lampret
// Merged branch_qmem into main tree.
//
// Revision 1.3.4.1  2003/12/09 11:46:48  simons
// Mbist nameing changed, Artisan ram instance signal names fixed, some synthesis waning fixed.
//
// Revision 1.3  2003/04/07 01:19:07  lampret
// Added Altera LPM RAMs. Changed generic RAM output when OE inactive.
//
// Revision 1.2  2002/10/17 20:04:41  lampret
// Added BIST scan. Special VS RAMs need to be used to implement BIST.
//
// Revision 1.1  2002/01/03 08:16:15  lampret
// New prefixes for RTL files, prefixed module names. Updated cache controllers and MMUs.
//
// Revision 1.8  2001/11/02 18:57:14  lampret
// Modified virtual silicon instantiations.
//
// Revision 1.7  2001/10/22 19:39:56  lampret
// Fixed parameters in generic sprams.
//
// Revision 1.6  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.
//
// Revision 1.5  2001/10/14 13:12:09  lampret
// MP3 version.
//
// Revision 1.1.1.1  2001/10/06 10:18:36  igorm
// no message
//
// Revision 1.1  2001/08/09 13:39:33  lampret
// Major clean-up.
//
// Revision 1.2  2001/07/30 05:38:02  lampret
// Adding empty directories required by HDL coding guidelines
//
//
 
// synopsys translate_off
`include "timescale.v"
// synopsys translate_on
`include "or1200_defines.v"
 
module or1200_spram_64x24(
`ifdef OR1200_BIST
        // RAM BIST
        mbist_si_i, mbist_so_o, mbist_ctrl_i,
`endif
        // Generic synchronous single-port RAM interface
        clk, rst, ce, we, oe, addr, di, doq
);
 
//
// Default address and data buses width
//
parameter aw = 6;
parameter dw = 24;
 
`ifdef OR1200_BIST
//
// RAM BIST
//
input mbist_si_i;
input [`OR1200_MBIST_CTRL_WIDTH - 1:0] mbist_ctrl_i;
output mbist_so_o;
`endif
 
//
// Generic synchronous single-port RAM interface
//
input                   clk;    // Clock
input                   rst;    // Reset
input                   ce;     // Chip enable input
input                   we;     // Write enable input
input                   oe;     // Output enable input
input   [aw-1:0] addr;   // address bus inputs
input   [dw-1:0] di;     // input data bus
output  [dw-1:0] doq;    // output data bus
 
//
// Internal wires and registers
//
`ifdef OR1200_XILINX_RAMB4
wire    [7:0]            unconnected;
`else
`ifdef OR1200_XILINX_RAMB16
wire    [7:0]            unconnected;
`endif // !OR1200_XILINX_RAMB16
`endif // !OR1200_XILINX_RAMB4
 
`ifdef OR1200_ARTISAN_SSP
`else
`ifdef OR1200_VIRTUALSILICON_SSP
`else
`ifdef OR1200_BIST
assign mbist_so_o = mbist_si_i;
`endif
`endif
`endif
 
`ifdef OR1200_ARTISAN_SSP
 
//
// Instantiation of ASIC memory:
//
// Artisan Synchronous Single-Port RAM (ra1sh)
//
`ifdef UNUSED
art_hssp_64x24 #(dw, 1<<aw, aw) artisan_ssp(
`else
`ifdef OR1200_BIST
art_hssp_64x24_bist artisan_ssp(
`else
art_hssp_64x24 artisan_ssp(
`endif
`endif
`ifdef OR1200_BIST
        // RAM BIST
        .mbist_si_i(mbist_si_i),
        .mbist_so_o(mbist_so_o),
        .mbist_ctrl_i(mbist_ctrl_i),
`endif
        .CLK(clk),
        .CEN(~ce),
        .WEN(~we),
        .A(addr),
        .D(di),
        .OEN(~oe),
        .Q(doq)
);
 
`else
 
`ifdef OR1200_AVANT_ATP
 
//
// Instantiation of ASIC memory:
//
// Avant! Asynchronous Two-Port RAM
//
avant_atp avant_atp(
        .web(~we),
        .reb(),
        .oeb(~oe),
        .rcsb(),
        .wcsb(),
        .ra(addr),
        .wa(addr),
        .di(di),
        .doq(doq)
);
 
`else
 
`ifdef OR1200_VIRAGE_SSP
 
//
// Instantiation of ASIC memory:
//
// Virage Synchronous 1-port R/W RAM
//
virage_ssp virage_ssp(
        .clk(clk),
        .adr(addr),
        .d(di),
        .we(we),
        .oe(oe),
        .me(ce),
        .q(doq)
);
 
`else
 
`ifdef OR1200_VIRTUALSILICON_SSP
 
//
// Instantiation of ASIC memory:
//
// Virtual Silicon Single-Port Synchronous SRAM
//
`ifdef UNUSED
vs_hdsp_64x24 #(1<<aw, aw-1, dw-1) vs_ssp(
`else
`ifdef OR1200_BIST
vs_hdsp_64x24_bist vs_ssp(
`else
vs_hdsp_64x24 vs_ssp(
`endif
`endif
`ifdef OR1200_BIST
        // RAM BIST
        .mbist_si_i(mbist_si_i),
        .mbist_so_o(mbist_so_o),
        .mbist_ctrl_i(mbist_ctrl_i),
`endif
        .CK(clk),
        .ADR(addr),
        .DI(di),
        .WEN(~we),
        .CEN(~ce),
        .OEN(~oe),
        .DOUT(doq)
);
 
`else
 
`ifdef OR1200_XILINX_RAMB4
 
//
// Instantiation of FPGA memory:
//
// Virtex/Spartan2
//
 
//
// Block 0
//
RAMB4_S16 ramb4_s16_0(
        .CLK(clk),
        .RST(rst),
        .ADDR({2'b00, addr}),
        .DI(di[15:0]),
        .EN(ce),
        .WE(we),
        .DO(doq[15:0])
);
 
//
// Block 1
//
RAMB4_S16 ramb4_s16_1(
        .CLK(clk),
        .RST(rst),
        .ADDR({2'b00, addr}),
        .DI({8'h00, di[23:16]}),
        .EN(ce),
        .WE(we),
        .DO({unconnected, doq[23:16]})
);
 
`else
 
`ifdef OR1200_XILINX_RAMB16
 
//
// Instantiation of FPGA memory:
//
// Virtex4/Spartan3E
//
// Added By Nir Mor
//
 
RAMB16_S36 ramb16_s36(
        .CLK(clk),
        .SSR(rst),
        .ADDR({3'b000, addr}),
        .DI({8'h00,di}),
        .DIP(4'h0),
        .EN(ce),
        .WE(we),
        .DO({unconnected, doq}),
        .DOP()
);
 
`else
 
`ifdef OR1200_ALTERA_LPM
 
//
// Instantiation of FPGA memory:
//
// Altera LPM
//
// Added By Jamil Khatib
//
 
wire    wr;
 
assign  wr = ce & we;
 
initial $display("Using Altera LPM.");
 
lpm_ram_dq lpm_ram_dq_component (
        .address(addr),
        .inclock(clk),
        .outclock(clk),
        .data(di),
        .we(wr),
        .q(doq)
);
 
defparam lpm_ram_dq_component.lpm_width = dw,
        lpm_ram_dq_component.lpm_widthad = aw,
        lpm_ram_dq_component.lpm_indata = "REGISTERED",
        lpm_ram_dq_component.lpm_address_control = "REGISTERED",
        lpm_ram_dq_component.lpm_outdata = "UNREGISTERED",
        lpm_ram_dq_component.lpm_hint = "USE_EAB=ON";
        // examplar attribute lpm_ram_dq_component NOOPT TRUE
 
`else
 
//
// Generic single-port synchronous RAM model
//
 
//
// Generic RAM's registers and wires
//
reg     [dw-1:0] mem [(1<<aw)-1:0];       // RAM content
reg     [aw-1:0] addr_reg;               // RAM address register
 
//
// Data output drivers
//
assign doq = (oe) ? mem[addr_reg] : {dw{1'b0}};
 
//
// RAM address register
//
always @(posedge clk or posedge rst)
        if (rst)
                addr_reg <= #1 {aw{1'b0}};
        else if (ce)
                addr_reg <= #1 addr;
 
//
// RAM write
//
always @(posedge clk)
        if (ce && we)
                mem[addr] <= #1 di;
 
`endif  // !OR1200_ALTERA_LPM
`endif  // !OR1200_XILINX_RAMB16
`endif  // !OR1200_XILINX_RAMB4
`endif  // !OR1200_VIRTUALSILICON_SSP
`endif  // !OR1200_VIRAGE_SSP
`endif  // !OR1200_AVANT_ATP
`endif  // !OR1200_ARTISAN_SSP
 
endmodule

Browse

Tools

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [or1200/] [rtl/] [verilog/] [or1200_spram_64x24.v] - Blame information for rev 120

Line No.	Rev	Author	Line
1	10	unneback	`//////////////////////////////////////////////////////////////////////`
2			`//// ////`
3			`//// Generic Single-Port Synchronous RAM ////`
4			`//// ////`
5			`//// This file is part of memory library available from ////`
6			`//// http://www.opencores.org/cvsweb.shtml/generic_memories/ ////`
7			`//// ////`
8			`//// Description ////`
9			`//// This block is a wrapper with common single-port ////`
10			`//// synchronous memory interface for different ////`
11			`//// types of ASIC and FPGA RAMs. Beside universal memory ////`
12			`//// interface it also provides behavioral model of generic ////`
13			`//// single-port synchronous RAM. ////`
14			`//// It should be used in all OPENCORES designs that want to be ////`
15			`//// portable accross different target technologies and ////`
16			`//// independent of target memory. ////`
17			`//// ////`
18			`//// Supported ASIC RAMs are: ////`
19			`//// - Artisan Single-Port Sync RAM ////`
20			`//// - Avant! Two-Port Sync RAM (*) ////`
21			`//// - Virage Single-Port Sync RAM ////`
22			`//// - Virtual Silicon Single-Port Sync RAM ////`
23			`//// ////`
24			`//// Supported FPGA RAMs are: ////`
25			`//// - Xilinx Virtex RAMB16 ////`
26			`//// - Xilinx Virtex RAMB4 ////`
27			`//// - Altera LPM ////`
28			`//// ////`
29			`//// To Do: ////`
30			`//// - xilinx rams need external tri-state logic ////`
31			`//// - fix avant! two-port ram ////`
32			`//// - add additional RAMs ////`
33			`//// ////`
34			`//// Author(s): ////`
35			`//// - Damjan Lampret, lampret@opencores.org ////`
36			`//// ////`
37			`//////////////////////////////////////////////////////////////////////`
38			`//// ////`
39			`//// Copyright (C) 2000 Authors and OPENCORES.ORG ////`
40			`//// ////`
41			`//// This source file may be used and distributed without ////`
42			`//// restriction provided that this copyright statement is not ////`
43			`//// removed from the file and that any derivative work contains ////`
44			`//// the original copyright notice and the associated disclaimer. ////`
45			`//// ////`
46			`//// This source file is free software; you can redistribute it ////`
47			`//// and/or modify it under the terms of the GNU Lesser General ////`
48			`//// Public License as published by the Free Software Foundation; ////`
49			`//// either version 2.1 of the License, or (at your option) any ////`
50			`//// later version. ////`
51			`//// ////`
52			`//// This source is distributed in the hope that it will be ////`
53			`//// useful, but WITHOUT ANY WARRANTY; without even the implied ////`
54			`//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////`
55			`//// PURPOSE. See the GNU Lesser General Public License for more ////`
56			`//// details. ////`
57			`//// ////`
58			`//// You should have received a copy of the GNU Lesser General ////`
59			`//// Public License along with this source; if not, download it ////`
60			`//// from http://www.opencores.org/lgpl.shtml ////`
61			`//// ////`
62			`//////////////////////////////////////////////////////////////////////`
63			`//`
64			`// CVS Revision History`
65			`//`
66			`// $Log: not supported by cvs2svn $`
67			`// Revision 1.8 2004/06/08 18:15:32 lampret`
68			`// Changed behavior of the simulation generic models`
69			`//`
70			`// Revision 1.7 2004/04/05 08:29:57 lampret`
71			`// Merged branch_qmem into main tree.`
72			`//`
73			`// Revision 1.3.4.1 2003/12/09 11:46:48 simons`
74			`// Mbist nameing changed, Artisan ram instance signal names fixed, some synthesis waning fixed.`
75			`//`
76			`// Revision 1.3 2003/04/07 01:19:07 lampret`
77			`// Added Altera LPM RAMs. Changed generic RAM output when OE inactive.`
78			`//`
79			`// Revision 1.2 2002/10/17 20:04:41 lampret`
80			`// Added BIST scan. Special VS RAMs need to be used to implement BIST.`
81			`//`
82			`// Revision 1.1 2002/01/03 08:16:15 lampret`
83			`// New prefixes for RTL files, prefixed module names. Updated cache controllers and MMUs.`
84			`//`
85			`// Revision 1.8 2001/11/02 18:57:14 lampret`
86			`// Modified virtual silicon instantiations.`
87			`//`
88			`// Revision 1.7 2001/10/22 19:39:56 lampret`
89			`// Fixed parameters in generic sprams.`
90			`//`
91			`// Revision 1.6 2001/10/21 17:57:16 lampret`
92			`// 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.`
93			`//`
94			`// Revision 1.5 2001/10/14 13:12:09 lampret`
95			`// MP3 version.`
96			`//`
97			`// Revision 1.1.1.1 2001/10/06 10:18:36 igorm`
98			`// no message`
99			`//`
100			`// Revision 1.1 2001/08/09 13:39:33 lampret`
101			`// Major clean-up.`
102			`//`
103			`// Revision 1.2 2001/07/30 05:38:02 lampret`
104			`// Adding empty directories required by HDL coding guidelines`
105			`//`
106			`//`
107
108			`// synopsys translate_off`
109			`include "timescale.v"
110			`// synopsys translate_on`
111			`include "or1200_defines.v"
112
113			`module or1200_spram_64x24(`
114			`ifdef OR1200_BIST
115			`// RAM BIST`
116			`mbist_si_i, mbist_so_o, mbist_ctrl_i,`
117			`endif
118			`// Generic synchronous single-port RAM interface`
119			`clk, rst, ce, we, oe, addr, di, doq`
120			`);`
121
122			`//`
123			`// Default address and data buses width`
124			`//`
125			`parameter aw = 6;`
126			`parameter dw = 24;`
127
128			`ifdef OR1200_BIST
129			`//`
130			`// RAM BIST`
131			`//`
132			`input mbist_si_i;`
133			input [`OR1200_MBIST_CTRL_WIDTH - 1:0] mbist_ctrl_i;
134			`output mbist_so_o;`
135			`endif
136
137			`//`
138			`// Generic synchronous single-port RAM interface`
139			`//`
140			`input clk; // Clock`
141			`input rst; // Reset`
142			`input ce; // Chip enable input`
143			`input we; // Write enable input`
144			`input oe; // Output enable input`
145			`input [aw-1:0] addr; // address bus inputs`
146			`input [dw-1:0] di; // input data bus`
147			`output [dw-1:0] doq; // output data bus`
148
149			`//`
150			`// Internal wires and registers`
151			`//`
152			`ifdef OR1200_XILINX_RAMB4
153			`wire [7:0] unconnected;`
154			`else
155			`ifdef OR1200_XILINX_RAMB16
156			`wire [7:0] unconnected;`
157			`endif // !OR1200_XILINX_RAMB16
158			`endif // !OR1200_XILINX_RAMB4
159
160			`ifdef OR1200_ARTISAN_SSP
161			`else
162			`ifdef OR1200_VIRTUALSILICON_SSP
163			`else
164			`ifdef OR1200_BIST
165			`assign mbist_so_o = mbist_si_i;`
166			`endif
167			`endif
168			`endif
169
170			`ifdef OR1200_ARTISAN_SSP
171
172			`//`
173			`// Instantiation of ASIC memory:`
174			`//`
175			`// Artisan Synchronous Single-Port RAM (ra1sh)`
176			`//`
177			`ifdef UNUSED
178			`art_hssp_64x24 #(dw, 1<<aw, aw) artisan_ssp(`
179			`else
180			`ifdef OR1200_BIST
181			`art_hssp_64x24_bist artisan_ssp(`
182			`else
183			`art_hssp_64x24 artisan_ssp(`
184			`endif
185			`endif
186			`ifdef OR1200_BIST
187			`// RAM BIST`
188			`.mbist_si_i(mbist_si_i),`
189			`.mbist_so_o(mbist_so_o),`
190			`.mbist_ctrl_i(mbist_ctrl_i),`
191			`endif
192			`.CLK(clk),`
193			`.CEN(~ce),`
194			`.WEN(~we),`
195			`.A(addr),`
196			`.D(di),`
197			`.OEN(~oe),`
198			`.Q(doq)`
199			`);`
200
201			`else
202
203			`ifdef OR1200_AVANT_ATP
204
205			`//`
206			`// Instantiation of ASIC memory:`
207			`//`
208			`// Avant! Asynchronous Two-Port RAM`
209			`//`
210			`avant_atp avant_atp(`
211			`.web(~we),`
212			`.reb(),`
213			`.oeb(~oe),`
214			`.rcsb(),`
215			`.wcsb(),`
216			`.ra(addr),`
217			`.wa(addr),`
218			`.di(di),`
219			`.doq(doq)`
220			`);`
221
222			`else
223
224			`ifdef OR1200_VIRAGE_SSP
225
226			`//`
227			`// Instantiation of ASIC memory:`
228			`//`
229			`// Virage Synchronous 1-port R/W RAM`
230			`//`
231			`virage_ssp virage_ssp(`
232			`.clk(clk),`
233			`.adr(addr),`
234			`.d(di),`
235			`.we(we),`
236			`.oe(oe),`
237			`.me(ce),`
238			`.q(doq)`
239			`);`
240
241			`else
242
243			`ifdef OR1200_VIRTUALSILICON_SSP
244
245			`//`
246			`// Instantiation of ASIC memory:`
247			`//`
248			`// Virtual Silicon Single-Port Synchronous SRAM`
249			`//`
250			`ifdef UNUSED
251			`vs_hdsp_64x24 #(1<<aw, aw-1, dw-1) vs_ssp(`
252			`else
253			`ifdef OR1200_BIST
254			`vs_hdsp_64x24_bist vs_ssp(`
255			`else
256			`vs_hdsp_64x24 vs_ssp(`
257			`endif
258			`endif
259			`ifdef OR1200_BIST
260			`// RAM BIST`
261			`.mbist_si_i(mbist_si_i),`
262			`.mbist_so_o(mbist_so_o),`
263			`.mbist_ctrl_i(mbist_ctrl_i),`
264			`endif
265			`.CK(clk),`
266			`.ADR(addr),`
267			`.DI(di),`
268			`.WEN(~we),`
269			`.CEN(~ce),`
270			`.OEN(~oe),`
271			`.DOUT(doq)`
272			`);`
273
274			`else
275
276			`ifdef OR1200_XILINX_RAMB4
277
278			`//`
279			`// Instantiation of FPGA memory:`
280			`//`
281			`// Virtex/Spartan2`
282			`//`
283
284			`//`
285			`// Block 0`
286			`//`
287			`RAMB4_S16 ramb4_s16_0(`
288			`.CLK(clk),`
289			`.RST(rst),`
290			`.ADDR({2'b00, addr}),`
291			`.DI(di[15:0]),`
292			`.EN(ce),`
293			`.WE(we),`
294			`.DO(doq[15:0])`
295			`);`
296
297			`//`
298			`// Block 1`
299			`//`
300			`RAMB4_S16 ramb4_s16_1(`
301			`.CLK(clk),`
302			`.RST(rst),`
303			`.ADDR({2'b00, addr}),`
304			`.DI({8'h00, di[23:16]}),`
305			`.EN(ce),`
306			`.WE(we),`
307			`.DO({unconnected, doq[23:16]})`
308			`);`
309
310			`else
311
312			`ifdef OR1200_XILINX_RAMB16
313
314			`//`
315			`// Instantiation of FPGA memory:`
316			`//`
317			`// Virtex4/Spartan3E`
318			`//`
319			`// Added By Nir Mor`
320			`//`
321
322			`RAMB16_S36 ramb16_s36(`
323			`.CLK(clk),`
324			`.SSR(rst),`
325			`.ADDR({3'b000, addr}),`
326			`.DI({8'h00,di}),`
327			`.DIP(4'h0),`
328			`.EN(ce),`
329			`.WE(we),`
330			`.DO({unconnected, doq}),`
331			`.DOP()`
332			`);`
333
334			`else
335
336			`ifdef OR1200_ALTERA_LPM
337
338			`//`
339			`// Instantiation of FPGA memory:`
340			`//`
341			`// Altera LPM`
342			`//`
343			`// Added By Jamil Khatib`
344			`//`
345
346			`wire wr;`
347
348			`assign wr = ce & we;`
349
350			`initial $display("Using Altera LPM.");`
351
352			`lpm_ram_dq lpm_ram_dq_component (`
353			`.address(addr),`
354			`.inclock(clk),`
355			`.outclock(clk),`
356			`.data(di),`
357			`.we(wr),`
358			`.q(doq)`
359			`);`
360
361			`defparam lpm_ram_dq_component.lpm_width = dw,`
362			`lpm_ram_dq_component.lpm_widthad = aw,`
363			`lpm_ram_dq_component.lpm_indata = "REGISTERED",`
364			`lpm_ram_dq_component.lpm_address_control = "REGISTERED",`
365			`lpm_ram_dq_component.lpm_outdata = "UNREGISTERED",`
366			`lpm_ram_dq_component.lpm_hint = "USE_EAB=ON";`
367			`// examplar attribute lpm_ram_dq_component NOOPT TRUE`
368
369			`else
370
371			`//`
372			`// Generic single-port synchronous RAM model`
373			`//`
374
375			`//`
376			`// Generic RAM's registers and wires`
377			`//`
378			`reg [dw-1:0] mem [(1<<aw)-1:0]; // RAM content`
379			`reg [aw-1:0] addr_reg; // RAM address register`
380
381			`//`
382			`// Data output drivers`
383			`//`
384			`assign doq = (oe) ? mem[addr_reg] : {dw{1'b0}};`
385
386			`//`
387			`// RAM address register`
388			`//`
389			`always @(posedge clk or posedge rst)`
390			`if (rst)`
391			`addr_reg <= #1 {aw{1'b0}};`
392			`else if (ce)`
393			`addr_reg <= #1 addr;`
394
395			`//`
396			`// RAM write`
397			`//`
398			`always @(posedge clk)`
399			`if (ce && we)`
400			`mem[addr] <= #1 di;`
401
402			`endif // !OR1200_ALTERA_LPM
403			`endif // !OR1200_XILINX_RAMB16
404			`endif // !OR1200_XILINX_RAMB4
405			`endif // !OR1200_VIRTUALSILICON_SSP
406			`endif // !OR1200_VIRAGE_SSP
407			`endif // !OR1200_AVANT_ATP
408			`endif // !OR1200_ARTISAN_SSP
409
410			`endmodule`