56 lines
1.6 KiB
VHDL
56 lines
1.6 KiB
VHDL
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USE std.textio.all;
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ARCHITECTURE bhv OF bramContentDualportWritefirst IS
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-- Define ramContent type
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type ramContentType is array(0 to (2**addr_bit_nb)-1) of bit_vector(data_bit_nb-1 DOWNTO 0);
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-- Define function to create initvalue signal
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impure function ReadRamContentFromFile(ramContentFilenAme : in string) return ramContentType is
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FILE ramContentFile : text is in ramContentFilenAme;
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variable ramContentFileLine : line;
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variable ramContent : ramContentType;
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begin
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for i in ramContentType'range loop
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readline(ramContentFile, ramContentFileLine);
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read(ramContentFileLine, ramContent(i));
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end loop;
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return ramContent;
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end function;
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-- Declare ramContent signal
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shared variable ramContent: ramContentType := ReadRamContentFromFile(init_file);
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BEGIN
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-- Port A
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process(clockA)
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begin
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if clockA'event and clockA='1' then
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if enA = '1' then
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if writeEnA = '1' then
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dataOutA <= dataInA;
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ramContent(to_integer(unsigned(addressA))) := to_bitvector(dataInA,'0');
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else
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dataOutA <= to_stdulogicvector(ramContent(to_integer(unsigned(addressA))));
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end if;
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end if;
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end if;
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end process;
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-- Port B
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process(clockB)
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begin
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if clockB'event and clockB='1' then
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if enB = '1' then
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if writeEnB = '1' then
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ramContent(to_integer(unsigned(addressB))) := to_bitvector(dataInB,'0');
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dataOutB <= dataInB;
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else
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dataOutB <= to_stdulogicvector(ramContent(to_integer(unsigned(addressB))));
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end if;
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end if;
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end if;
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end process;
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END ARCHITECTURE bhv;
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