when B"00" & X"d7" => romsig <= X"1b";
      when B"00" & X"d8" => romsig <= X"03";
      when B"00" & X"d9" => romsig <= X"29";
      when B"00" & X"da" => romsig <= X"40";
      when B"00" & X"db" => romsig <= X"5d";
      when B"00" & X"dc" => romsig <= X"7d";
      when B"00" & X"dd" => romsig <= X"9d";
      when B"00" & X"de" => romsig <= X"bd";
      when B"00" & X"df" => romsig <= X"e2";
      when B"00" & X"e0" => romsig <= X"d3";
      when B"00" & X"e1" => romsig <= X"0f";
      when B"00" & X"e2" => romsig <= X"10";
      when B"00" & X"e3" => romsig <= X"0e";
      when B"00" & X"e4" => romsig <= X"14";
      when B"00" & X"e5" => romsig <= X"0a";
      when B"00" & X"e6" => romsig <= X"1c";
      when B"00" & X"e7" => romsig <= X"04";
      when B"00" & X"e8" => romsig <= X"2a";
      when B"00" & X"e9" => romsig <= X"41";
      when B"00" & X"ea" => romsig <= X"5e";
      when B"00" & X"eb" => romsig <= X"7e";
      when B"00" & X"ec" => romsig <= X"9e";
      when B"00" & X"ed" => romsig <= X"be";
      when B"00" & X"ee" => romsig <= X"e2";
      when B"00" & X"ef" => romsig <= X"d4";
      when B"00" & X"f0" => romsig <= X"10";
      when B"00" & X"f1" => romsig <= X"11";
      when B"00" & X"f2" => romsig <= X"0f";
      when B"00" & X"f3" => romsig <= X"15";
      when B"00" & X"f4" => romsig <= X"0b";
      when B"00" & X"f5" => romsig <= X"1d";
      when B"00" & X"f6" => romsig <= X"05";
      when B"00" & X"f7" => romsig <= X"2b";
      when B"00" & X"f8" => romsig <= X"42";
      when B"00" & X"f9" => romsig <= X"5f";
      when B"00" & X"fa" => romsig <= X"7f";
      when B"00" & X"fb" => romsig <= X"9f";
      when B"00" & X"fc" => romsig <= X"bf";
      when B"00" & X"fd" => romsig <= X"e3";
      when B"00" & X"fe" => romsig <= X"d5";
      when B"00" & X"ff" => romsig <= X"11";
      when B"01" & X"00" => romsig <= X"12";
      when B"01" & X"01" => romsig <= X"10";
      when B"01" & X"02" => romsig <= X"16";
      when B"01" & X"03" => romsig <= X"0c";
      when B"01" & X"04" => romsig <= X"1e";
      when B"01" & X"05" => romsig <= X"05";
      when B"01" & X"06" => romsig <= X"2c";
      when B"01" & X"07" => romsig <= X"43";
      when B"01" & X"08" => romsig <= X"60";
      when B"01" & X"09" => romsig <= X"80";
      when B"01" & X"0a" => romsig <= X"a0";
      when B"01" & X"0b" => romsig <= X"c0";
      when B"01" & X"0c" => romsig <= X"e4";
      when B"01" & X"0d" => romsig <= X"d6";
      when B"01" & X"0e" => romsig <= X"12";
      when B"01" & X"0f" => romsig <= X"13";
      when B"01" & X"10" => romsig <= X"11";
      when B"01" & X"11" => romsig <= X"17";
      when B"01" & X"12" => romsig <= X"0d";
      when B"01" & X"13" => romsig <= X"1f";
      when B"01" & X"14" => romsig <= X"06";
      when B"01" & X"15" => romsig <= X"2d";
      when B"01" & X"16" => romsig <= X"44";
      when B"01" & X"17" => romsig <= X"61";
      when B"01" & X"18" => romsig <= X"81";
      when B"01" & X"19" => romsig <= X"a1";
      when B"01" & X"1a" => romsig <= X"c1";
      when B"01" & X"1b" => romsig <= X"e4";
      when B"01" & X"1c" => romsig <= X"d7";
      when B"01" & X"1d" => romsig <= X"13";
      when B"01" & X"1e" => romsig <= X"14";
      when B"01" & X"1f" => romsig <= X"12";
      when B"01" & X"20" => romsig <= X"18";
      when B"01" & X"21" => romsig <= X"0e";
      when B"01" & X"22" => romsig <= X"20";
      when B"01" & X"23" => romsig <= X"07";
      when B"01" & X"24" => romsig <= X"2e";
      when B"01" & X"25" => romsig <= X"45";
      when B"01" & X"26" => romsig <= X"62";
      when B"01" & X"27" => romsig <= X"82";
      when B"01" & X"28" => romsig <= X"a2";
      when B"01" & X"29" => romsig <= X"c2";
      when B"01" & X"2a" => romsig <= X"e5";
      when B"01" & X"2b" => romsig <= X"d8";
      when B"01" & X"2c" => romsig <= X"14";
      when B"01" & X"2d" => romsig <= X"15";
      when B"01" & X"2e" => romsig <= X"13";
      when B"01" & X"2f" => romsig <= X"19";
      when B"01" & X"30" => romsig <= X"0f";
      when B"01" & X"31" => romsig <= X"21";
      when B"01" & X"32" => romsig <= X"07";
      when B"01" & X"33" => romsig <= X"2f";
      when B"01" & X"34" => romsig <= X"46";
      when B"01" & X"35" => romsig <= X"63";
      when B"01" & X"36" => romsig <= X"83";
      when B"01" & X"37" => romsig <= X"a3";
      when B"01" & X"38" => romsig <= X"c3";
      when B"01" & X"39" => romsig <= X"e6";
      when B"01" & X"3a" => romsig <= X"d9";
      when B"01" & X"3b" => romsig <= X"15";
      when B"01" & X"3c" => romsig <= X"16";
      when B"01" & X"3d" => romsig <= X"14";
      when B"01" & X"3e" => romsig <= X"1a";
      when B"01" & X"3f" => romsig <= X"10";
      when B"01" & X"40" => romsig <= X"22";
      when B"01" & X"41" => romsig <= X"08";
      when B"01" & X"42" => romsig <= X"30";
      when B"01" & X"43" => romsig <= X"47";
      when B"01" & X"44" => romsig <= X"64";
      when B"01" & X"45" => romsig <= X"84";
      when B"01" & X"46" => romsig <= X"a4";
      when B"01" & X"47" => romsig <= X"c4";
      when B"01" & X"48" => romsig <= X"e6";
      when B"01" & X"49" => romsig <= X"da";
      when B"01" & X"4a" => romsig <= X"16";
      when B"01" & X"4b" => romsig <= X"17";
      when B"01" & X"4c" => romsig <= X"15";
      when B"01" & X"4d" => romsig <= X"1b";
      when B"01" & X"4e" => romsig <= X"11";
      when B"01" & X"4f" => romsig <= X"23";
      when B"01" & X"50" => romsig <= X"09";
      when B"01" & X"51" => romsig <= X"31";
      when B"01" & X"52" => romsig <= X"48";
      when B"01" & X"53" => romsig <= X"65";
      when B"01" & X"54" => romsig <= X"85";
      when B"01" & X"55" => romsig <= X"a5";
      when B"01" & X"56" => romsig <= X"c5";
      when B"01" & X"57" => romsig <= X"e7";
      when B"01" & X"58" => romsig <= X"db";
      when B"01" & X"59" => romsig <= X"17";
      when B"01" & X"5a" => romsig <= X"18";
      when B"01" & X"5b" => romsig <= X"16";
      when B"01" & X"5c" => romsig <= X"1c";
      when B"01" & X"5d" => romsig <= X"12";
      when B"01" & X"5e" => romsig <= X"24";
      when B"01" & X"5f" => romsig <= X"09";
      when B"01" & X"60" => romsig <= X"32";
      when B"01" & X"61" => romsig <= X"49";
      when B"01" & X"62" => romsig <= X"66";
      when B"01" & X"63" => romsig <= X"86";
      when B"01" & X"64" => romsig <= X"a6";
      when B"01" & X"65" => romsig <= X"c6";
      when B"01" & X"66" => romsig <= X"e8";
      when B"01" & X"67" => romsig <= X"dc";
      when B"01" & X"68" => romsig <= X"18";
      when B"01" & X"69" => romsig <= X"19";
      when B"01" & X"6a" => romsig <= X"17";
      when B"01" & X"6b" => romsig <= X"1d";
      when B"01" & X"6c" => romsig <= X"13";
      when B"01" & X"6d" => romsig <= X"25";
      when B"01" & X"6e" => romsig <= X"0a";
      when B"01" & X"6f" => romsig <= X"33";
      when B"01" & X"70" => romsig <= X"4a";
      when B"01" & X"71" => romsig <= X"67";
      when B"01" & X"72" => romsig <= X"87";
      when B"01" & X"73" => romsig <= X"a7";
      when B"01" & X"74" => romsig <= X"c7";
      when B"01" & X"75" => romsig <= X"e8";
      when B"01" & X"76" => romsig <= X"dd";
      when B"01" & X"77" => romsig <= X"19";
      when B"01" & X"78" => romsig <= X"1a";
      when B"01" & X"79" => romsig <= X"18";
      when B"01" & X"7a" => romsig <= X"1e";
      when B"01" & X"7b" => romsig <= X"14";
      when B"01" & X"7c" => romsig <= X"26";
      when B"01" & X"7d" => romsig <= X"0b";
      when B"01" & X"7e" => romsig <= X"34";
      when B"01" & X"7f" => romsig <= X"4b";
      when B"01" & X"80" => romsig <= X"68";
      when B"01" & X"81" => romsig <= X"88";
      when B"01" & X"82" => romsig <= X"a8";
      when B"01" & X"83" => romsig <= X"c8";
      when B"01" & X"84" => romsig <= X"e9";
      when B"01" & X"85" => romsig <= X"de";
      when B"01" & X"86" => romsig <= X"1a";
      when B"01" & X"87" => romsig <= X"1b";
      when B"01" & X"88" => romsig <= X"19";
      when B"01" & X"89" => romsig <= X"1f";
      when B"01" & X"8a" => romsig <= X"15";
      when B"01" & X"8b" => romsig <= X"27";
      when B"01" & X"8c" => romsig <= X"0b";
      when B"01" & X"8d" => romsig <= X"35";
      when B"01" & X"8e" => romsig <= X"4c";
      when B"01" & X"8f" => romsig <= X"69";
      when B"01" & X"90" => romsig <= X"89";
      when B"01" & X"91" => romsig <= X"a9";
      when B"01" & X"92" => romsig <= X"c9";
      when B"01" & X"93" => romsig <= X"ea";
      when B"01" & X"94" => romsig <= X"df";
      when B"01" & X"95" => romsig <= X"1b";
      when B"01" & X"96" => romsig <= X"1c";
      when B"01" & X"97" => romsig <= X"1a";
      when B"01" & X"98" => romsig <= X"20";
      when B"01" & X"99" => romsig <= X"16";
      when B"01" & X"9a" => romsig <= X"28";
      when B"01" & X"9b" => romsig <= X"0c";
      when B"01" & X"9c" => romsig <= X"36";
      when B"01" & X"9d" => romsig <= X"4d";
      when B"01" & X"9e" => romsig <= X"6a";
      when B"01" & X"9f" => romsig <= X"8a";
      when B"01" & X"a0" => romsig <= X"aa";
      when B"01" & X"a1" => romsig <= X"ca";
      when B"01" & X"a2" => romsig <= X"ea";
      when B"01" & X"a3" => romsig <= X"e0";
      when B"01" & X"a4" => romsig <= X"1c";
      when B"01" & X"a5" => romsig <= X"1d";
      when B"01" & X"a6" => romsig <= X"1b";
      when B"01" & X"a7" => romsig <= X"21";
      when B"01" & X"a8" => romsig <= X"17";
      when B"01" & X"a9" => romsig <= X"29";
      when B"01" & X"aa" => romsig <= X"0f";
      when B"01" & X"ab" => romsig <= X"37";
      when B"01" & X"ac" => romsig <= X"05";
      when B"01" & X"ad" => romsig <= X"4e";
      when B"01" & X"ae" => romsig <= X"6b";
      when B"01" & X"af" => romsig <= X"8b";
      when B"01" & X"b0" => romsig <= X"ab";
      when B"01" & X"b1" => romsig <= X"cb";
      when B"01" & X"b2" => romsig <= X"eb";
      when B"01" & X"b3" => romsig <= X"1d";
      when B"01" & X"b4" => romsig <= X"1e";
      when B"01" & X"b5" => romsig <= X"1c";
      when B"01" & X"b6" => romsig <= X"22";
      when B"01" & X"b7" => romsig <= X"18";
      when B"01" & X"b8" => romsig <= X"2a";
      when B"01" & X"b9" => romsig <= X"10";
      when B"01" & X"ba" => romsig <= X"38";
      when B"01" & X"bb" => romsig <= X"05";
      when B"01" & X"bc" => romsig <= X"4f";
      when B"01" & X"bd" => romsig <= X"6c";
      when B"01" & X"be" => romsig <= X"8c";
      when B"01" & X"bf" => romsig <= X"ac";
      when B"01" & X"c0" => romsig <= X"cc";
      when B"01" & X"c1" => romsig <= X"ec";
      when B"01" & X"c2" => romsig <= X"1e";
      when B"01" & X"c3" => romsig <= X"1f";
      when B"01" & X"c4" => romsig <= X"1d";
      when B"01" & X"c5" => romsig <= X"23";
      when B"01" & X"c6" => romsig <= X"19";
      when B"01" & X"c7" => romsig <= X"2b";
      when B"01" & X"c8" => romsig <= X"11";
      when B"01" & X"c9" => romsig <= X"39";
      when B"01" & X"ca" => romsig <= X"06";
      when B"01" & X"cb" => romsig <= X"50";
      when B"01" & X"cc" => romsig <= X"6d";
      when B"01" & X"cd" => romsig <= X"8d";
      when B"01" & X"ce" => romsig <= X"ad";
      when B"01" & X"cf" => romsig <= X"cd";
      when B"01" & X"d0" => romsig <= X"ec";
      when B"01" & X"d1" => romsig <= X"1f";
      when B"01" & X"d2" => romsig <= X"20";
      when B"01" & X"d3" => romsig <= X"1e";
      when B"01" & X"d4" => romsig <= X"24";
      when B"01" & X"d5" => romsig <= X"1a";
      when B"01" & X"d6" => romsig <= X"2c";
      when B"01" & X"d7" => romsig <= X"12";
      when B"01" & X"d8" => romsig <= X"3a";
      when B"01" & X"d9" => romsig <= X"07";
      when B"01" & X"da" => romsig <= X"51";
      when B"01" & X"db" => romsig <= X"6e";
      when B"01" & X"dc" => romsig <= X"8e";
      when B"01" & X"dd" => romsig <= X"ae";
      when B"01" & X"de" => romsig <= X"ce";
      when B"01" & X"df" => romsig <= X"ed";
      when B"01" & X"e0" => romsig <= X"20";
      when B"01" & X"e1" => romsig <= X"21";
      when B"01" & X"e2" => romsig <= X"1f";
      when B"01" & X"e3" => romsig <= X"25";
      when B"01" & X"e4" => romsig <= X"1b";
      when B"01" & X"e5" => romsig <= X"2d";
      when B"01" & X"e6" => romsig <= X"13";
      when B"01" & X"e7" => romsig <= X"3b";
      when B"01" & X"e8" => romsig <= X"07";
      when B"01" & X"e9" => romsig <= X"52";