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Gehstock.Mist_FPGA/common/Video/saa505x.vhd
Marcel 462f0490bd add Commen Units
2019-07-22 23:42:05 +02:00

1350 lines
22 KiB
VHDL
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library ieee;
use ieee.std_logic_1164.all;
use ieee.std_logic_unsigned.all;
use ieee.std_logic_arith.all;
use ieee.numeric_std.all;
entity saa505x is
port
(
clk : in std_logic;
reset : in std_logic;
si_i_n : in std_logic;
si_o : out std_logic;
data_n : in std_logic;
d : in std_logic_vector(6 downto 0);
dlim : in std_logic;
glr : in std_logic;
dew : in std_logic;
crs : in std_logic;
bcs_n : in std_logic;
tlc_n : out std_logic;
tr6 : in std_logic;
f1 : in std_logic;
y : out std_logic;
b : out std_logic;
g : out std_logic;
r : out std_logic;
blan : out std_logic;
lose : in std_logic;
po : in std_logic;
de : in std_logic
);
end entity saa505x;
architecture SYN of saa505x is
type charset_row_t is array (0 to 9) of std_logic_vector(5 downto 0);
type charset_t is array (0 to 95) of charset_row_t;
constant charset : charset_t :=
(
-- $20
0 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"000000",
4=>"000000",
5=>"000000",
6=>"000000",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $21
1 => (
0=>"000000",
1=>"000100",
2=>"000100",
3=>"000100",
4=>"000100",
5=>"000100",
6=>"000000",
7=>"000100",
8=>"000000",
9=>"000000"
),
-- $22
2 => (
0=>"000000",
1=>"001010",
2=>"001010",
3=>"001010",
4=>"000000",
5=>"000000",
6=>"000000",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $23
3 => (
0=>"000000",
1=>"000110",
2=>"001001",
3=>"001000",
4=>"011100",
5=>"001000",
6=>"001000",
7=>"011111",
8=>"000000",
9=>"000000"
),
-- $24
4 => (
0=>"000000",
1=>"001110",
2=>"010101",
3=>"010100",
4=>"001110",
5=>"000101",
6=>"010101",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $25
5 => (
0=>"000000",
1=>"011000",
2=>"011001",
3=>"000010",
4=>"000100",
5=>"001000",
6=>"010011",
7=>"000011",
8=>"000000",
9=>"000000"
),
-- $26
6 => (
0=>"000000",
1=>"001000",
2=>"010100",
3=>"010100",
4=>"001000",
5=>"010101",
6=>"010010",
7=>"001101",
8=>"000000",
9=>"000000"
),
-- $27
7 => (
0=>"000000",
1=>"000100",
2=>"000100",
3=>"000100",
4=>"000000",
5=>"000000",
6=>"000000",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $28
8 => (
0=>"000000",
1=>"000010",
2=>"000100",
3=>"001000",
4=>"001000",
5=>"001000",
6=>"000100",
7=>"000010",
8=>"000000",
9=>"000000"
),
-- $29
9 => (
0=>"000000",
1=>"001000",
2=>"000100",
3=>"000010",
4=>"000010",
5=>"000010",
6=>"000100",
7=>"001000",
8=>"000000",
9=>"000000"
),
-- $2A
10 => (
0=>"000000",
1=>"000100",
2=>"010101",
3=>"001110",
4=>"000100",
5=>"001110",
6=>"010101",
7=>"000100",
8=>"000000",
9=>"000000"
),
-- $2B
11 => (
0=>"000000",
1=>"000000",
2=>"000100",
3=>"000100",
4=>"011111",
5=>"000100",
6=>"000100",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $2C
12 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"000000",
4=>"000000",
5=>"000100",
6=>"000100",
7=>"001000",
8=>"000000",
9=>"000000"
),
-- $2D
13 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"001110",
4=>"000000",
5=>"000000",
6=>"000000",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $2E
14 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"000000",
4=>"000000",
5=>"000000",
6=>"000000",
7=>"000100",
8=>"000000",
9=>"000000"
),
-- $2F
15 => (
0=>"000000",
1=>"000000",
2=>"000001",
3=>"000010",
4=>"000100",
5=>"001000",
6=>"010000",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $30
16 => (
0=>"000000",
1=>"000100",
2=>"001010",
3=>"010001",
4=>"010001",
5=>"010001",
6=>"001010",
7=>"000100",
8=>"000000",
9=>"000000"
),
-- $31
17 => (
0=>"000000",
1=>"000100",
2=>"001100",
3=>"000100",
4=>"000100",
5=>"000100",
6=>"000100",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $32
18 => (
0=>"000000",
1=>"001110",
2=>"010001",
3=>"000001",
4=>"000110",
5=>"001000",
6=>"010000",
7=>"011111",
8=>"000000",
9=>"000000"
),
-- $33
19 => (
0=>"000000",
1=>"011111",
2=>"000001",
3=>"000010",
4=>"000110",
5=>"000001",
6=>"010001",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $34
20 => (
0=>"000000",
1=>"000010",
2=>"000110",
3=>"001010",
4=>"010010",
5=>"011111",
6=>"000010",
7=>"000010",
8=>"000000",
9=>"000000"
),
-- $35
21 => (
0=>"000000",
1=>"011111",
2=>"010000",
3=>"011110",
4=>"000001",
5=>"000001",
6=>"010001",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $36
22 => (
0=>"000000",
1=>"000110",
2=>"001000",
3=>"010000",
4=>"011110",
5=>"010001",
6=>"010001",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $37
23 => (
0=>"000000",
1=>"011111",
2=>"000001",
3=>"000010",
4=>"000100",
5=>"001000",
6=>"001000",
7=>"001000",
8=>"000000",
9=>"000000"
),
-- $38
24 => (
0=>"000000",
1=>"001110",
2=>"010001",
3=>"010001",
4=>"001110",
5=>"010001",
6=>"010001",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $39
25 => (
0=>"000000",
1=>"001110",
2=>"010001",
3=>"010001",
4=>"001111",
5=>"000001",
6=>"000010",
7=>"001100",
8=>"000000",
9=>"000000"
),
-- $3A
26 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"000100",
4=>"000000",
5=>"000000",
6=>"000100",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $3B
27 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"000100",
4=>"000000",
5=>"000100",
6=>"000100",
7=>"001000",
8=>"000000",
9=>"000000"
),
-- $3C
28 => (
0=>"000000",
1=>"000010",
2=>"000100",
3=>"001000",
4=>"010000",
5=>"001000",
6=>"000100",
7=>"000010",
8=>"000000",
9=>"000000"
),
-- $3D
29 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"011111",
4=>"000000",
5=>"011111",
6=>"000000",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $3E
30 => (
0=>"000000",
1=>"001000",
2=>"000100",
3=>"000010",
4=>"000001",
5=>"000010",
6=>"000100",
7=>"001000",
8=>"000000",
9=>"000000"
),
-- $3F
31 => (
0=>"000000",
1=>"001110",
2=>"010001",
3=>"000010",
4=>"000100",
5=>"000100",
6=>"000000",
7=>"000100",
8=>"000000",
9=>"000000"
),
-- $40
32 => (
0=>"000000",
1=>"001110",
2=>"010001",
3=>"010111",
4=>"010101",
5=>"010111",
6=>"010000",
7=>"001111",
8=>"000000",
9=>"000000"
),
-- $41
33 => (
0=>"000000",
1=>"000100",
2=>"001010",
3=>"010001",
4=>"010001",
5=>"011111",
6=>"010001",
7=>"010001",
8=>"000000",
9=>"000000"
),
-- $42
34 => (
0=>"000000",
1=>"011110",
2=>"010001",
3=>"010001",
4=>"011110",
5=>"010001",
6=>"010001",
7=>"011110",
8=>"000000",
9=>"000000"
),
-- $43
35 => (
0=>"000000",
1=>"001110",
2=>"010001",
3=>"010000",
4=>"010000",
5=>"010000",
6=>"010001",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $44
36 => (
0=>"000000",
1=>"011110",
2=>"010001",
3=>"010001",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"011110",
8=>"000000",
9=>"000000"
),
-- $45
37 => (
0=>"000000",
1=>"011111",
2=>"010000",
3=>"010000",
4=>"011110",
5=>"010000",
6=>"010000",
7=>"011111",
8=>"000000",
9=>"000000"
),
-- $46
38 => (
0=>"000000",
1=>"011111",
2=>"010000",
3=>"010000",
4=>"011110",
5=>"010000",
6=>"010000",
7=>"010000",
8=>"000000",
9=>"000000"
),
-- $47
39 => (
0=>"000000",
1=>"001110",
2=>"010001",
3=>"010000",
4=>"010000",
5=>"010011",
6=>"010001",
7=>"001111",
8=>"000000",
9=>"000000"
),
-- $48
40 => (
0=>"000000",
1=>"010001",
2=>"010001",
3=>"010001",
4=>"011111",
5=>"010001",
6=>"010001",
7=>"010001",
8=>"000000",
9=>"000000"
),
-- $49
41 => (
0=>"000000",
1=>"001110",
2=>"000100",
3=>"000100",
4=>"000100",
5=>"000100",
6=>"000100",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $4A
42 => (
0=>"000000",
1=>"000001",
2=>"000001",
3=>"000001",
4=>"000001",
5=>"000001",
6=>"010001",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $4B
43 => (
0=>"000000",
1=>"010001",
2=>"010010",
3=>"010100",
4=>"011000",
5=>"010100",
6=>"010010",
7=>"010001",
8=>"000000",
9=>"000000"
),
-- $4C
44 => (
0=>"000000",
1=>"010000",
2=>"010000",
3=>"010000",
4=>"010000",
5=>"010000",
6=>"010000",
7=>"011111",
8=>"000000",
9=>"000000"
),
-- $4D
45 => (
0=>"000000",
1=>"010001",
2=>"011011",
3=>"010101",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"010001",
8=>"000000",
9=>"000000"
),
-- $4E
46 => (
0=>"000000",
1=>"010001",
2=>"010001",
3=>"011001",
4=>"010101",
5=>"010011",
6=>"010001",
7=>"010001",
8=>"000000",
9=>"000000"
),
-- $4F
47 => (
0=>"000000",
1=>"001110",
2=>"010001",
3=>"010001",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $50
48 => (
0=>"000000",
1=>"011110",
2=>"010001",
3=>"010001",
4=>"011110",
5=>"010000",
6=>"010000",
7=>"010000",
8=>"000000",
9=>"000000"
),
-- $51
49 => (
0=>"000000",
1=>"001110",
2=>"010001",
3=>"010001",
4=>"010001",
5=>"010101",
6=>"010010",
7=>"001101",
8=>"000000",
9=>"000000"
),
-- $52
50 => (
0=>"000000",
1=>"011110",
2=>"010001",
3=>"010001",
4=>"011110",
5=>"010100",
6=>"010010",
7=>"010001",
8=>"000000",
9=>"000000"
),
-- $53
51 => (
0=>"000000",
1=>"001110",
2=>"010001",
3=>"010000",
4=>"001110",
5=>"000001",
6=>"010001",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $54
52 => (
0=>"000000",
1=>"011111",
2=>"000100",
3=>"000100",
4=>"000100",
5=>"000100",
6=>"000100",
7=>"000100",
8=>"000000",
9=>"000000"
),
-- $55
53 => (
0=>"000000",
1=>"010001",
2=>"010001",
3=>"010001",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $56
54 => (
0=>"000000",
1=>"010001",
2=>"010001",
3=>"010001",
4=>"001010",
5=>"001010",
6=>"000100",
7=>"000100",
8=>"000000",
9=>"000000"
),
-- $57
55 => (
0=>"000000",
1=>"010001",
2=>"010001",
3=>"010001",
4=>"010101",
5=>"010101",
6=>"010101",
7=>"001010",
8=>"000000",
9=>"000000"
),
-- $58
56 => (
0=>"000000",
1=>"010001",
2=>"010001",
3=>"001010",
4=>"000100",
5=>"001010",
6=>"010001",
7=>"010001",
8=>"000000",
9=>"000000"
),
-- $59
57 => (
0=>"000000",
1=>"010001",
2=>"010001",
3=>"001010",
4=>"000100",
5=>"000100",
6=>"000100",
7=>"000100",
8=>"000000",
9=>"000000"
),
-- $5A
58 => (
0=>"000000",
1=>"011111",
2=>"000001",
3=>"000010",
4=>"000100",
5=>"001000",
6=>"010000",
7=>"011111",
8=>"000000",
9=>"000000"
),
-- $5B
59 => (
0=>"000000",
1=>"000000",
2=>"000100",
3=>"001000",
4=>"011111",
5=>"001000",
6=>"000100",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $5C
60 => (
0=>"000000",
1=>"010000",
2=>"010000",
3=>"010000",
4=>"010110",
5=>"000001",
6=>"000010",
7=>"000100",
8=>"000111",
9=>"000000"
),
-- $5D
61 => (
0=>"000000",
1=>"000000",
2=>"000100",
3=>"000010",
4=>"011111",
5=>"000010",
6=>"000100",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $5E
62 => (
0=>"000000",
1=>"000000",
2=>"000100",
3=>"001110",
4=>"010101",
5=>"000100",
6=>"000100",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $5F
63 => (
0=>"000000",
1=>"001010",
2=>"001010",
3=>"011111",
4=>"001010",
5=>"011111",
6=>"001010",
7=>"001010",
8=>"000000",
9=>"000000"
),
-- $60
64 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"000000",
4=>"000000",
5=>"011111",
6=>"000000",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $61
65 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"001110",
4=>"000001",
5=>"001111",
6=>"010001",
7=>"001111",
8=>"000000",
9=>"000000"
),
-- $62
66 => (
0=>"000000",
1=>"010000",
2=>"010000",
3=>"011110",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"011110",
8=>"000000",
9=>"000000"
),
-- $63
67 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"001111",
4=>"010000",
5=>"010000",
6=>"010000",
7=>"001111",
8=>"000000",
9=>"000000"
),
-- $64
68 => (
0=>"000000",
1=>"000001",
2=>"000001",
3=>"001111",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"001111",
8=>"000000",
9=>"000000"
),
-- $65
69 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"001110",
4=>"010001",
5=>"011111",
6=>"010000",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $66
70 => (
0=>"000000",
1=>"000010",
2=>"000100",
3=>"000100",
4=>"001110",
5=>"000100",
6=>"000100",
7=>"000100",
8=>"000000",
9=>"000000"
),
-- $67
71 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"001111",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"001111",
8=>"000001",
9=>"001110"
),
-- $68
72 => (
0=>"000000",
1=>"010000",
2=>"010000",
3=>"011110",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"010001",
8=>"000000",
9=>"000000"
),
-- $69
73 => (
0=>"000000",
1=>"000100",
2=>"000000",
3=>"001100",
4=>"000100",
5=>"000100",
6=>"000100",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $6A
74 => (
0=>"000000",
1=>"000100",
2=>"000000",
3=>"000100",
4=>"000100",
5=>"000100",
6=>"000100",
7=>"000100",
8=>"001000",
9=>"000000"
),
-- $6B
75 => (
0=>"000000",
1=>"001000",
2=>"001000",
3=>"001001",
4=>"001010",
5=>"001100",
6=>"001010",
7=>"001001",
8=>"000000",
9=>"000000"
),
-- $6C
76 => (
0=>"000000",
1=>"001100",
2=>"000100",
3=>"000100",
4=>"000100",
5=>"000100",
6=>"000100",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $6D
77 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"011010",
4=>"010101",
5=>"010101",
6=>"010101",
7=>"010101",
8=>"000000",
9=>"000000"
),
-- $6E
78 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"011110",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"010001",
8=>"000000",
9=>"000000"
),
-- $6F
79 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"001110",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"001110",
8=>"000000",
9=>"000000"
),
-- $70
80 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"011110",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"011110",
8=>"010000",
9=>"010000"
),
-- $71
81 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"001111",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"001111",
8=>"000001",
9=>"000001"
),
-- $72
82 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"001011",
4=>"001100",
5=>"001000",
6=>"001000",
7=>"001000",
8=>"000000",
9=>"000000"
),
-- $73
83 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"001111",
4=>"010000",
5=>"001110",
6=>"000001",
7=>"011110",
8=>"000000",
9=>"000000"
),
-- $74
84 => (
0=>"000000",
1=>"000100",
2=>"000100",
3=>"001110",
4=>"000100",
5=>"000100",
6=>"000100",
7=>"000010",
8=>"000000",
9=>"000000"
),
-- $75
85 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"010001",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"001111",
8=>"000000",
9=>"000000"
),
-- $76
86 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"010001",
4=>"010001",
5=>"001010",
6=>"001010",
7=>"000100",
8=>"000000",
9=>"000000"
),
-- $77
87 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"010001",
4=>"010001",
5=>"010101",
6=>"010101",
7=>"001010",
8=>"000000",
9=>"000000"
),
-- $78
88 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"010001",
4=>"001010",
5=>"000100",
6=>"001010",
7=>"010001",
8=>"000000",
9=>"000000"
),
-- $79
89 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"010001",
4=>"010001",
5=>"010001",
6=>"010001",
7=>"001111",
8=>"000001",
9=>"001110"
),
-- $7A
90 => (
0=>"000000",
1=>"000000",
2=>"000000",
3=>"011111",
4=>"000010",
5=>"000100",
6=>"001000",
7=>"011111",
8=>"000000",
9=>"000000"
),
-- $7B
91 => (
0=>"000000",
1=>"001000",
2=>"001000",
3=>"001000",
4=>"001001",
5=>"000011",
6=>"000101",
7=>"000111",
8=>"000001",
9=>"000000"
),
-- $7C
92 => (
0=>"000000",
1=>"001010",
2=>"001010",
3=>"001010",
4=>"001010",
5=>"001010",
6=>"001010",
7=>"001010",
8=>"000000",
9=>"000000"
),
-- $7D
93 => (
0=>"000000",
1=>"011000",
2=>"000100",
3=>"011000",
4=>"000100",
5=>"011001",
6=>"000011",
7=>"000101",
8=>"000111",
9=>"000001"
),
-- $7E
94 => (
0=>"000000",
1=>"000000",
2=>"000100",
3=>"000000",
4=>"011111",
5=>"000000",
6=>"000100",
7=>"000000",
8=>"000000",
9=>"000000"
),
-- $7F
95 => (
0=>"000000",
1=>"011111",
2=>"011111",
3=>"011111",
4=>"011111",
5=>"011111",
6=>"011111",
7=>"011111",
8=>"000000",
9=>"000000"
)
);
signal ra : integer range 0 to 9;
begin
-- generate row address
process (clk, reset)
variable glr_r : std_logic;
begin
if reset = '1' then
elsif rising_edge(clk) then
-- VSYNC, reset row address
if dew = '1' then
ra <= 0;
-- HYSNC, increment row address
elsif glr = '1' and glr_r = '0' then
if ra = 9 then
ra <= 0;
else
ra <= ra + 1;
end if;
end if;
glr_r := glr;
end if;
end process;
-- latch and output data
process (clk, reset)
variable char_row_data : std_logic_vector(5 downto 0);
begin
if reset = '1' then
null;
elsif rising_edge(clk) then
if f1 = '1' then
--latch data
if d(6 downto 5) = "00" then
char_row_data := (others => '0');
else
char_row_data := charset(conv_integer(d)-32)(ra);
end if;
elsif tr6 = '1' then
-- shift data
char_row_data := char_row_data(4 downto 0) & '0';
end if;
end if;
-- assign output
r <= char_row_data(char_row_data'left);
g <= char_row_data(char_row_data'left);
b <= char_row_data(char_row_data'left);
end process;
-- not supported
si_o <= 'X';
tlc_n <= 'X';
y <= 'X';
blan <= 'X';
end SYN;
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