mirror of https://github.com/zxdos/zxuno.git
58 lines
1.9 KiB
Verilog
58 lines
1.9 KiB
Verilog
`timescale 1ns / 1ps
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// This file is part of the ZXUNO Spectrum core.
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// Creation date is 04:12:52 2014-02-09 by Miguel Angel Rodriguez Jodar
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// (c)2014-2020 ZXUNO association.
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// ZXUNO official repository: http://svn.zxuno.com/svn/zxuno
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// Username: guest Password: zxuno
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// Github repository for this core: https://github.com/mcleod-ideafix/zxuno_spectrum_core
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//
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// ZXUNO Spectrum core is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ZXUNO Spectrum core is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with the ZXUNO Spectrum core. If not, see <https://www.gnu.org/licenses/>.
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//
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// Any distributed copy of this file must keep this notice intact.
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module rom (
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input wire clk,
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input wire [13:0] a,
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output reg [7:0] dout
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);
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`include "config.vh"
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`ifdef LOAD_ROM_FROM_FLASH_OPTION
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reg [7:0] mem[0:16383];
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integer i;
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initial begin
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for (i=0;i<16384;i=i+1) begin
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mem[i] = 8'h00;
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end
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$readmemh ("bootloader_to_bios_and_easter_egg.hex", mem, 0);
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end
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`else
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reg [7:0] mem[0:9215]; // este tamaño es el justito para que quepa en un bloque de BRAM, que es de 9KB
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integer i;
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initial begin
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for (i=0;i<9216;i=i+1) begin
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mem[i] = 8'h00;
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end
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$readmemh ("bootloader_copy_bram_to_sram.hex", mem, 0);
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$readmemh (`DEFAULT_DIVMMC_ROM, mem, 512);
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end
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`endif
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always @(posedge clk) begin
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dout <= mem[a];
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end
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endmodule
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