From deb7d0a6fc76d5250c238d479cf97d4755abef01 Mon Sep 17 00:00:00 2001 From: Flavian Kaufmann Date: Sun, 12 May 2024 21:27:41 +0200 Subject: refactoring --- src/memory_unit.v | 55 ------------------------------------------------------- 1 file changed, 55 deletions(-) delete mode 100644 src/memory_unit.v (limited to 'src/memory_unit.v') diff --git a/src/memory_unit.v b/src/memory_unit.v deleted file mode 100644 index 6e2b457..0000000 --- a/src/memory_unit.v +++ /dev/null @@ -1,55 +0,0 @@ -module memory_unit ( - input clk, - input rst, - input we, - input [31:0] addr, - output reg [31:0] read_data, - input [31:0] write_data -); - -reg ram_we; -wire [31:0] ram_read_data, rom_read_data; - -ram #(.N(32), .SIZE(1024)) ram( - .clk(clk), - .rst(rst), - .we(ram_we), - .addr(addr), - .data_read(ram_read_data), - .data_write(write_data) -); - -rom #(.N(32), .SIZE(1024)) rom( - .clk(clk), - .addr(addr), - .data_read(rom_read_data) -); - -// 0000 0000 Reserved -// 0000 FFFF -// -// 0001 0000 ROM -// 000F FFFF -// -// 0010 0000 RAM -// FF0F FFFF -// -// FF10 0000 Reserved -// FFFF FFFF - - -always @(*) begin - ram_we = 0; - if (addr[31:16] == 16'h0000) begin - read_data <= 0; - end else if (addr[31:16] >= 16'h0001 && addr[31:16] <= 16'h000F) begin - read_data <= rom_read_data; - end else if (addr[31:16] >= 16'h0010 && addr[31:16] <= 16'hFF0F) begin - ram_we = we; - read_data <= ram_read_data; - end else if (addr[31:16] >= 16'hFF10 && addr[31:16] <= 16'hFFFF) begin - read_data <= 0; - end -end - -endmodule -- cgit v1.2.3