Subversion Repositories rtfbitmapcontroller

// ============================================================================

//        __

//   \\__/ o\    (C) 2023  Robert Finch, Waterloo

//    \  __ /    All rights reserved.

//     \/_//     robfinch@finitron.ca

//       ||

//

//

// fb_palram.sv

// - Palette RAM for frame buffer

//

// BSD 3-Clause License

// Redistribution and use in source and binary forms, with or without

// modification, are permitted provided that the following conditions are met:

//

// 1. Redistributions of source code must retain the above copyright notice, this

//    list of conditions and the following disclaimer.

//

// 2. Redistributions in binary form must reproduce the above copyright notice,

//    this list of conditions and the following disclaimer in the documentation

//    and/or other materials provided with the distribution.

//

// 3. Neither the name of the copyright holder nor the names of its

//    contributors may be used to endorse or promote products derived from

//    this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"

// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE

// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR

// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER

// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,

// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

//

// ============================================================================

module fb_palram(clka, ena, wea, addra, dina, douta, clkb, enb, web, addrb, dinb, doutb);

parameter XILINX = 1;

input clka;

input ena;

input [7:0] wea;

input [12:0] addra;

input [63:0] dina;

output [63:0] douta;

input clkb;

input enb;

input web;

input [12:0] addrb;

input [31:0] dinb;

output [31:0] doutb;

generate begin : gPalram

        if (XILINX)

           // xpm_memory_tdpram: True Dual Port RAM

           // Xilinx Parameterized Macro, version 2022.2

           xpm_memory_tdpram #(

              .ADDR_WIDTH_A(10),              // DECIMAL

              .ADDR_WIDTH_B(11),               // DECIMAL

              .AUTO_SLEEP_TIME(0),            // DECIMAL

              .BYTE_WRITE_WIDTH_A(8),         // DECIMAL

              .BYTE_WRITE_WIDTH_B(32),        // DECIMAL

              .CASCADE_HEIGHT(0),             // DECIMAL

              .CLOCKING_MODE("independent_clock"), // String

              .ECC_MODE("no_ecc"),            // String

              .MEMORY_INIT_FILE("none"),      // String

              .MEMORY_INIT_PARAM("0"),        // String

              .MEMORY_OPTIMIZATION("true"),   // String

              .MEMORY_PRIMITIVE("auto"),      // String

              .MEMORY_SIZE(1024*64),          // DECIMAL

              .MESSAGE_CONTROL(0),            // DECIMAL

              .READ_DATA_WIDTH_A(64),         // DECIMAL

              .READ_DATA_WIDTH_B(32),         // DECIMAL

              .READ_LATENCY_A(2),             // DECIMAL

              .READ_LATENCY_B(2),             // DECIMAL

              .READ_RESET_VALUE_A("0"),       // String

              .READ_RESET_VALUE_B("0"),       // String

              .RST_MODE_A("SYNC"),            // String

              .RST_MODE_B("SYNC"),            // String

              .SIM_ASSERT_CHK(0),             // DECIMAL; 0=disable simulation messages, 1=enable simulation messages

              .USE_EMBEDDED_CONSTRAINT(0),    // DECIMAL

              .USE_MEM_INIT(1),               // DECIMAL

              .USE_MEM_INIT_MMI(0),           // DECIMAL

              .WAKEUP_TIME("disable_sleep"),  // String

              .WRITE_DATA_WIDTH_A(64),        // DECIMAL

              .WRITE_DATA_WIDTH_B(32),        // DECIMAL

              .WRITE_MODE_A("no_change"),     // String

              .WRITE_MODE_B("no_change"),     // String

              .WRITE_PROTECT(1)               // DECIMAL

           )

           xpm_memory_tdpram_inst (

              .dbiterra(),             // 1-bit output: Status signal to indicate double bit error occurrence

                                               // on the data output of port A.

              .dbiterrb(),             // 1-bit output: Status signal to indicate double bit error occurrence

                                               // on the data output of port A.

              .douta(douta),                   // READ_DATA_WIDTH_A-bit output: Data output for port A read operations.

              .doutb(doutb),                   // READ_DATA_WIDTH_B-bit output: Data output for port B read operations.

              .sbiterra(),             // 1-bit output: Status signal to indicate single bit error occurrence

                                               // on the data output of port A.

              .sbiterrb(),             // 1-bit output: Status signal to indicate single bit error occurrence

                                               // on the data output of port B.

              .addra(addra[12:3]),                   // ADDR_WIDTH_A-bit input: Address for port A write and read operations.

              .addrb(addrb[12:2]),                   // ADDR_WIDTH_B-bit input: Address for port B write and read operations.

              .clka(clka),                     // 1-bit input: Clock signal for port A. Also clocks port B when

                                               // parameter CLOCKING_MODE is "common_clock".

              .clkb(clkb),                     // 1-bit input: Clock signal for port B when parameter CLOCKING_MODE is

                                               // "independent_clock". Unused when parameter CLOCKING_MODE is

                                               // "common_clock".

              .dina(dina),                     // WRITE_DATA_WIDTH_A-bit input: Data input for port A write operations.

              .dinb(dinb),                     // WRITE_DATA_WIDTH_B-bit input: Data input for port B write operations.

              .ena(ena),                       // 1-bit input: Memory enable signal for port A. Must be high on clock

                                               // cycles when read or write operations are initiated. Pipelined

                                               // internally.

              .enb(enb),                       // 1-bit input: Memory enable signal for port B. Must be high on clock

                                               // cycles when read or write operations are initiated. Pipelined

                                               // internally.

              .injectdbiterra(1'b0), // 1-bit input: Controls double bit error injection on input data when

                                               // ECC enabled (Error injection capability is not available in

                                               // "decode_only" mode).

              .injectdbiterrb(1'b0), // 1-bit input: Controls double bit error injection on input data when

                                               // ECC enabled (Error injection capability is not available in

                                               // "decode_only" mode).

              .injectsbiterra(1'b0), // 1-bit input: Controls single bit error injection on input data when

                                               // ECC enabled (Error injection capability is not available in

                                               // "decode_only" mode).

              .injectsbiterrb(1'b0), // 1-bit input: Controls single bit error injection on input data when

                                               // ECC enabled (Error injection capability is not available in

                                               // "decode_only" mode).

              .regcea(1'b1),                 // 1-bit input: Clock Enable for the last register stage on the output

                                               // data path.

              .regceb(1'b1),                 // 1-bit input: Clock Enable for the last register stage on the output

                                               // data path.

              .rsta(1'b0),                     // 1-bit input: Reset signal for the final port A output register stage.

                                               // Synchronously resets output port douta to the value specified by

                                               // parameter READ_RESET_VALUE_A.

              .rstb(1'b0),                     // 1-bit input: Reset signal for the final port B output register stage.

                                               // Synchronously resets output port doutb to the value specified by

                                               // parameter READ_RESET_VALUE_B.

              .sleep(1'b0),                   // 1-bit input: sleep signal to enable the dynamic power saving feature.

              .wea(wea),                       // WRITE_DATA_WIDTH_A/BYTE_WRITE_WIDTH_A-bit input: Write enable vector

                                               // for port A input data port dina. 1 bit wide when word-wide writes are

                                               // used. In byte-wide write configurations, each bit controls the

                                               // writing one byte of dina to address addra. For example, to

                                               // synchronously write only bits [15-8] of dina when WRITE_DATA_WIDTH_A

                                               // is 32, wea would be 4'b0010.

              .web(web)                        // WRITE_DATA_WIDTH_B/BYTE_WRITE_WIDTH_B-bit input: Write enable vector

                                               // for port B input data port dinb. 1 bit wide when word-wide writes are

                                               // used. In byte-wide write configurations, each bit controls the

                                               // writing one byte of dinb to address addrb. For example, to

                                               // synchronously write only bits [15-8] of dinb when WRITE_DATA_WIDTH_B

                                               // is 32, web would be 4'b0010.

           );

           // End of xpm_memory_tdpram_inst instantiation

end

endgenerate

endmodule