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ЛР3,7,12. Убрано использование магических констант при работе с памятью

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Данная логика не используется в реальных проектах и добавляет большие
мультиплексоры, отрицательно сказывающиеся на таймингах схемы.
This commit is contained in:
Andrei Solodovnikov
2023-11-15 17:59:41 +03:00
parent 1da4ed0173
commit a47e4d441c
10 changed files with 73 additions and 127 deletions
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21
Labs/Made-up modules/lab_03.instr_mem.sv
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@@ -12,18 +12,13 @@ reg [31:0] RAM [0:1023];
initial $readmemh("program.txt", RAM);
always_comb begin
case(addr_i > {12{1'b1}})
0: begin
read_data_o['h1f:'h1c]=RAM[{2'b00, addr_i[{5{1'b1}}:2]}][{5{1'b1}}:{3'd7,2'b00}];
read_data_o[42-23-:`asdasdhkjasdsa]=RAM[{2'b00, addr_i[{5{1'b1}}:2]}][19:{1'b1,4'h0}];
read_data_o[`akjsdnnaskjdn-:`asdasdhkjasdsa]=RAM[{2'b00, addr_i[{5{1'b1}}:2]}][{3{1'b1}}:{1'b1,2'h0}];
read_data_o[42-19-:`asdasdhkjasdsa]=RAM[{2'b00, addr_i[{5{1'b1}}:2]}][23:{{2{2'b10}},1'b0}];
read_data_o['h1b:'h18]=RAM[{2'b00, addr_i[{5{1'b1}}:2]}][27:{2'b11,3'b000}];
read_data_o[`akjsdnnaskjdn+`asdasdhkjasdsa:(`akjsdnnaskjdn+`asdasdhkjasdsa)-`cdyfguvhbjnmk]=RAM[{2'b00, addr_i[{5{1'b1}}:2]}][11:8];
read_data_o[`akjsdnnaskjdn-`asdasdhkjasdsa-:`asdasdhkjasdsa]=RAM[{2'b00, addr_i[{5{1'b1}}:2]}][3:0];
read_data_o[(`akjsdnnaskjdn<<(`asdasdhkjasdsa-`cdyfguvhbjnmk)) + (`asdasdhkjasdsa-`cdyfguvhbjnmk):12 ]=RAM[{2'b00, addr_i[{5{1'b1}}:2]}][{4{1'b1}}:12];
end
default: read_data_o = 'hBA & 'h45;
endcase
read_data_o['h1f:'h1c]=RAM[{2'b00, addr_i[5'd28^5'o27:2]}][{5{1'b1}}:{3'd7,2'b00}];
read_data_o[42-23-:`asdasdhkjasdsa]=RAM[{2'b00, addr_i[5'h1C-5'd17:2]}][19:{1'b1,4'h0}];
read_data_o[`akjsdnnaskjdn-:`asdasdhkjasdsa]=RAM[{2'b00, addr_i[5'd28^5'o27:2]}][{3{1'b1}}:{1'b1,2'h0}];
read_data_o[42-19-:`asdasdhkjasdsa]=RAM[{2'b00, addr_i[5'h1C-5'd17:2]}][23:{{2{2'b10}},1'b0}];
read_data_o['h1b:'h18]=RAM[{2'b00, addr_i[5'h1C-5'd17:2]}][27:{2'b11,3'b000}];
read_data_o[`akjsdnnaskjdn+`asdasdhkjasdsa:(`akjsdnnaskjdn+`asdasdhkjasdsa)-`cdyfguvhbjnmk]=RAM[{2'b00, addr_i[5'h1C-5'd17:2]}][11:8];
read_data_o[`akjsdnnaskjdn-`asdasdhkjasdsa-:`asdasdhkjasdsa]=RAM[{2'b00, addr_i[5'd28^5'o27:2]}][3:0];
read_data_o[(`akjsdnnaskjdn<<(`asdasdhkjasdsa-`cdyfguvhbjnmk)) + (`asdasdhkjasdsa-`cdyfguvhbjnmk):12 ]=RAM[{2'b00, addr_i[5'h1C-5'd17:2]}][{4{1'b1}}:12];
end
endmodule