X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=src%2Fgen_pkg.vhd;h=f8a2963d90405aea55fe3bd4271915482288685a;hb=a1b9896ecd59e16ef6c28bc6990eadd6e0c515c8;hp=216d9f0e9962259e3f9cf7d578897a588a582069;hpb=030287b141ae40fd8c7e9e8060ee7a96ba109499;p=hwmod.git

diff --git a/src/gen_pkg.vhd b/src/gen_pkg.vhd
index 216d9f0..f8a2963 100644
--- a/src/gen_pkg.vhd
+++ b/src/gen_pkg.vhd
@@ -18,21 +18,26 @@ package gen_pkg is
 	-- integer ist 32bit (31bit + sign)
 	subtype cinteger is integer;
 
-	-- 50 zeilen * 71 zeichen * 2 (berechnung + ergebnis) = 7100 bytes
-	constant hspalte_max : integer := 71;
-	constant hzeile_max : integer := 100;
-	constant H_RAM_SIZE : integer := 7100;
-	constant H_RAM_WIDTH : integer := log2c(H_RAM_SIZE);
+
+	constant HSPALTE_MAX : integer := 71;
 	subtype hspalte is std_logic_vector(6 downto 0);
+
+	constant HZEILE_MAX : integer := 100;
 	subtype hzeile is std_logic_vector(6 downto 0);
+
+	-- 50 zeilen * 71 zeichen * 2 (berechnung + ergebnis) = 7100 bytes
+	constant H_RAM_SIZE : integer := HZEILE_MAX * HSPALTE_MAX;
+	constant H_RAM_WIDTH : integer := log2c(H_RAM_SIZE);
+
 	subtype hbyte is std_logic_vector(7 downto 0);
-	subtype hstring is string(1 to 72);
-	subtype hstr_int is integer range 0 to 72;
+	subtype hstring is string(1 to HSPALTE_MAX+1);
+	subtype hstr_int is integer range 0 to HSPALTE_MAX+1;
 
 	procedure icwait(signal clk_i : IN std_logic; cycles: natural);
 
 	function ascii2sc (x : hbyte) return hbyte;
 	function valid_char (x : hbyte) return boolean;
+	function zeile2char(i : std_logic_vector; stelle : natural) return hbyte;
 
 	-- http://www.marjorie.de/ps2/scancode-set2.htm
 	constant SC_KP_0 : hbyte := x"70";
@@ -119,4 +124,26 @@ package body gen_pkg is
 		end case;
 		return y;
 	end function;
+
+	function zeile2char(i : std_logic_vector; stelle : natural) return hbyte is
+		subtype zeilnum is string(1 to 2);
+		type zeilnum_arr is array (natural range 0 to 49) of zeilnum;
+		constant zn : zeilnum_arr := (
+			0 => "00", 1 => "01", 2 => "02", 3 => "03", 4 => "04",
+			5 => "05", 6 => "06", 7 => "07", 8 => "08", 9 => "09",
+			10 => "10", 11 => "11", 12 => "12", 13 => "13", 14 => "14",
+			15 => "15", 16 => "16", 17 => "17", 18 => "18", 19 => "19",
+			20 => "20", 21 => "21", 22 => "22", 23 => "23", 24 => "24",
+			25 => "25", 26 => "26", 27 => "27", 28 => "28", 29 => "29",
+			30 => "30", 31 => "31", 32 => "32", 33 => "33", 34 => "34",
+			35 => "35", 36 => "36", 37 => "37", 38 => "38", 39 => "39",
+			40 => "40", 41 => "41", 42 => "42", 43 => "43", 44 => "44",
+			45 => "45", 46 => "46", 47 => "47", 48 => "48", 49 => "49",
+			others => "xy");
+		variable t : signed(hzeile'length downto 0);
+	begin
+		t := signed('0' & i);
+		t := t / 2;
+		return hbyte(to_unsigned(character'pos(zn(to_integer(t))(stelle)),8));
+	end;
 end package body gen_pkg;