1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
library IEEE;
use IEEE.STD_LOGIC_1164.all;
use IEEE.STD_LOGIC_ARITH.all;
library zylin;
use zylin.zpu_config.all;
package zpupkg is
component dualport_ram is
port (clk : in std_logic;
memAWriteEnable : in std_logic;
memAAddr : in std_logic_vector(maxAddrBit downto minAddrBit);
memAWrite : in std_logic_vector(wordSize-1 downto 0);
memARead : out std_logic_vector(wordSize-1 downto 0);
memBWriteEnable : in std_logic;
memBAddr : in std_logic_vector(maxAddrBit downto minAddrBit);
memBWrite : in std_logic_vector(wordSize-1 downto 0);
memBRead : out std_logic_vector(wordSize-1 downto 0));
end component;
component trace is
port(
clk : in std_logic;
begin_inst : in std_logic;
pc : in std_logic_vector(maxAddrBit downto 0);
opcode : in std_logic_vector(7 downto 0);
sp : in std_logic_vector(maxAddrBit downto minAddrBit);
memA : in std_logic_vector(wordSize-1 downto 0);
memB : in std_logic_vector(wordSize-1 downto 0);
busy : in std_logic
);
end component;
component zpu_top is
Port ( clk : in std_logic;
areset : in std_logic;
io_busy : in std_logic;
io_read : in std_logic_vector(7 downto 0);
io_write : out std_logic_vector(7 downto 0);
io_addr : out std_logic_vector(maxAddrBit downto minAddrBit);
io_writeEnable : out std_logic;
io_readEnable : out std_logic;
interrupt : in std_logic;
break : out std_logic);
end component;
component timer is
port(
clk : in std_logic;
areset : in std_logic;
we : in std_logic;
din : in std_logic_vector(7 downto 0);
adr : in std_logic_vector(2 downto 0);
dout : out std_logic_vector(7 downto 0));
end component;
component zpuio is
port ( areset : in std_logic;
cpu_clk : in std_logic;
clk_status : in std_logic_vector(2 downto 0);
cpu_din : in std_logic_vector(15 downto 0);
cpu_a : in std_logic_vector(20 downto 0);
cpu_we : in std_logic_vector(1 downto 0);
cpu_re : in std_logic;
cpu_dout : inout std_logic_vector(15 downto 0));
end component;
-- opcode decode constants
constant OpCode_Im : std_logic_vector(7 downto 7) := "1";
constant OpCode_StoreSP : std_logic_vector(7 downto 5) := "010";
constant OpCode_LoadSP : std_logic_vector(7 downto 5) := "011";
constant OpCode_Emulate : std_logic_vector(7 downto 5) := "001";
constant OpCode_AddSP : std_logic_vector(7 downto 4) := "0001";
constant OpCode_Short : std_logic_vector(7 downto 4) := "0000";
constant OpCode_Break : std_logic_vector(3 downto 0) := "0000";
constant OpCode_Shiftleft: std_logic_vector(3 downto 0) := "0001";
constant OpCode_PushSP : std_logic_vector(3 downto 0) := "0010";
constant OpCode_PushInt : std_logic_vector(3 downto 0) := "0011";
constant OpCode_PopPC : std_logic_vector(3 downto 0) := "0100";
constant OpCode_Add : std_logic_vector(3 downto 0) := "0101";
constant OpCode_And : std_logic_vector(3 downto 0) := "0110";
constant OpCode_Or : std_logic_vector(3 downto 0) := "0111";
constant OpCode_Load : std_logic_vector(3 downto 0) := "1000";
constant OpCode_Not : std_logic_vector(3 downto 0) := "1001";
constant OpCode_Flip : std_logic_vector(3 downto 0) := "1010";
constant OpCode_Nop : std_logic_vector(3 downto 0) := "1011";
constant OpCode_Store : std_logic_vector(3 downto 0) := "1100";
constant OpCode_PopSP : std_logic_vector(3 downto 0) := "1101";
constant OpCode_Compare : std_logic_vector(3 downto 0) := "1110";
constant OpCode_PopInt : std_logic_vector(3 downto 0) := "1111";
constant OpCode_Lessthan : std_logic_vector(5 downto 0) := conv_std_logic_vector(36, 6);
constant OpCode_Lessthanorequal : std_logic_vector(5 downto 0) := conv_std_logic_vector(37, 6);
constant OpCode_Ulessthan : std_logic_vector(5 downto 0) := conv_std_logic_vector(38, 6);
constant OpCode_Ulessthanorequal : std_logic_vector(5 downto 0) := conv_std_logic_vector(39, 6);
constant OpCode_Swap : std_logic_vector(5 downto 0) := conv_std_logic_vector(40, 6);
constant OpCode_Lshiftright : std_logic_vector(5 downto 0) := conv_std_logic_vector(42, 6);
constant OpCode_Ashiftleft : std_logic_vector(5 downto 0) := conv_std_logic_vector(43, 6);
constant OpCode_Ashiftright : std_logic_vector(5 downto 0) := conv_std_logic_vector(44, 6);
constant OpCode_Eq : std_logic_vector(5 downto 0) := conv_std_logic_vector(46, 6);
constant OpCode_Neq : std_logic_vector(5 downto 0) := conv_std_logic_vector(47, 6);
constant OpCode_Sub : std_logic_vector(5 downto 0) := conv_std_logic_vector(49, 6);
constant OpCode_Loadb : std_logic_vector(5 downto 0) := conv_std_logic_vector(51, 6);
constant OpCode_Storeb : std_logic_vector(5 downto 0) := conv_std_logic_vector(52, 6);
constant OpCode_Eqbranch : std_logic_vector(5 downto 0) := conv_std_logic_vector(55, 6);
constant OpCode_Neqbranch : std_logic_vector(5 downto 0) := conv_std_logic_vector(56, 6);
constant OpCode_Pushspadd : std_logic_vector(5 downto 0) := conv_std_logic_vector(61, 6);
constant OpCode_Mult16x16 : std_logic_vector(5 downto 0) := conv_std_logic_vector(62, 6);
constant OpCode_Callpcrel : std_logic_vector(5 downto 0) := conv_std_logic_vector(63, 6);
constant OpCode_Size : integer := 8;
end zpupkg;
|