end entity display;
architecture beh of display is
- type DISPLAY_STATE is (SIDLE, S_NEW_BS, S_BACK, S_BLANK, S_NEW_RESULT,
+ type DISPLAY_STATE is (S_INIT, SIDLE, S_NEW_BS, S_BACK, S_BLANK, S_NEW_RESULT,
S_ZEILEUP, S_NEW_INPUT, S_COUNTUP, S_GETCH, S_CR1, S_NL1, S_PUTCH1,
S_PUTCH2, S_WAIT, S_NOP1, S_READ_RESULT_0, S_READ_RESULT_1,
- S_READ_RESULT_2, S_INIT, S_PS1_0, S_PS1_1, S_PS1_2, S_PS1_3, S_PS1_4,
+ S_READ_RESULT_2, S_PS1_0, S_PS1_1, S_PS1_2, S_PS1_3, S_PS1_4,
S_PS1_5);
type DISPLAY_ISTATE is (IS_BACK_2_BLANK, IS_BLANK_2_BACK,
IS_NL1_2_ZEILEUP, IS_RESULT2_2_CR1, IS_CR1_2_NL1, IS_NL1_2_RESULT0,
-- out
process(state_int, d_zeile_int, d_spalte_int, d_get_int, command_int,
command_data_int, d_char)
- 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;
begin
d_zeile_next <= d_zeile_int;
d_spalte_next <= d_spalte_int;