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
|
`default_nettype none
`timescale 1ns/1ns
`include "messages.vh"
`ifndef SIMULATION
`error_SIMULATION_not_defined
; /* Cause syntax error */
`endif
module soc_test();
wire [17:0] sram_addr;
wire [15:0] sram_io;
wire sram_cs_n;
wire sram_oe_n;
wire sram_we_n;
wire vga_hs;
wire vga_vs;
wire [2:0] vga_red;
wire [2:0] vga_green;
wire [2:0] vga_blue;
wire led1;
wire led2;
wire [9:0] image_writes;
reg clock_100mhz;
reg reset;
VGA_640_480_60Hz vga_display
(
.horizontal_sync(vga_hs),
.vertical_sync(vga_vs),
.red(vga_red),
.green(vga_green),
.blue(vga_blue),
.image_writes(image_writes)
);
K6R4016V1D_TC10_sram sram
(
.sram_addr(sram_addr),
.sram_io(sram_io),
.sram_cs_not(sram_cs_n),
.sram_oe_not(sram_oe_n),
.sram_we_not(sram_we_n)
);
soc
#(
.FONT_FILE("../../design/font.mem"),
.ROM_FILE("instructions.mem")
) soc
(
.clock_100mhz(clock_100mhz),
.sram_addr(sram_addr),
.sram_io(sram_io),
.sram_cs_n(sram_cs_n),
.sram_oe_n(sram_oe_n),
.sram_we_n(sram_we_n),
.vga_hs(vga_hs),
.vga_vs(vga_vs),
.vga_red(vga_red),
.vga_green(vga_green),
.vga_blue(vga_blue),
.button1(!reset),
.button2(1'b1),
.led1(led1),
.led2(led2)
);
integer i;
initial begin
reset <= 1;
clock_100mhz <= 0;
for (i = 0; i < 5_000_000; i++) begin
#5;
if (clock_100mhz)
reset <= 0;
clock_100mhz <= ~clock_100mhz;
end
if (led1)
`MSG(("error: stack machine in soc hasn't finished working in 25ms"));
else
`MSG(("error: nothing got displayed in 25ms"));
end
always @ (image_writes) begin
if (image_writes)
$finish;
end
endmodule // soc_test
|
