Verilog Programming part 5 ppt
Verilog Programming part 5 ppt
... port_id is 5 bits wide
integer matrix[4:0][0: 255 ]; // Two dimensional array of integers
reg [63:0] array_4d [ 15: 0][7:0][7:0][ 255 :0]; //Four dimensional array
wire [7:0] w_array2 [5: 0]; // ... value) of port_id array.
matrix[1][0] = 3 355 9; // Set value of element indexed by [1][0] to 3 355 9
array_4d[0][0][0][0][ 15: 0] = 0; //Clear bits 15: 0 of the register
//access...
Tài liệu Logic Synthesis With Verilog HDL part 5 pptx
... nickel x5 = 2'b01, dime x10 = 2'b10.
•
output: 1-bit, newspaper—release door when newspaper = 1'b1
•
states: 4 states—s0 = 0 cents; s5 = 5 cents; s10 = 10 cents; s 15 = 15 cents ... x5/0 means transition to the state pointed to by the arc, when input is x5
(2'b01), and set the output to 0.
Figure 14-10. Finite State Machine for Newspaper Vending Machine
14.7.4...
Verilog Programming part 8 ppt
... connections. However, a warning is typically issued that the
widths do not match.
Unconnected ports
Verilog allows ports to remain unconnected. For example, certain output ports
might be simply for ... of that module. Each declared port provides the
complete information about the port. Example 4 -5
shows this alternate syntax. This
syntax avoids the duplication of naming the ports in...
Verilog Programming part 1 ppt
... LiB ]
[ Team LiB ]
1 .5 Popularity of Verilog HDL
Verilog HDL has evolved as a standard hardware description language. Verilog
HDL offers many useful features
• Verilog HDL is a general-purpose ... easy to use. It is similar in syntax to the C programming
language. Designers with C programming experience will find it easy to
learn Verilog HDL.
• Verilog HDL allows d...
Verilog Programming part 3 pptx
...
clk is 10 units; the reset signal stays up from time 0 to 15 and then goes up again
from time 1 95 to 2 05. Output q counts from 0 to 15.
Figure 2-8. Stimulus and Output Waveforms
2.4 Instances ... 3
50 Output q = 4
60 Output q = 5
70 Output q = 6
80 Output q = 7
90 Output q = 8
100 Output q = 9
110 Output q = 10
120 Output q = 11
130 Output q = 12
140 Output q = 13...
Verilog Programming part 25 ppt
... reg [ 15: 0] cd_xor, ef_xor; //variables in module top
reg [ 15: 0] c, d, e, f; //variables in module top
-
task automatic bitwise_xor;
output [ 15: 0] ab_xor; //output from the task
input [ 15: 0] ...
called concurrently from two locations in the code.
Example 8 -5
shows how an automatic task is defined and used.
Example 8 -5 Re-entrant (Automatic) Tasks
// Module that contains an...
Verilog Programming part 20 ppt
... four types of looping statements in Verilog: while, for, repeat, and
forever. The syntax of these loops is very similar to the syntax of loops in the C
programming language. All looping statements ... data_buffer(data_start, data, clock);
parameter cycles = 8;
input data_start;
input [ 15: 0] data;
input clock;
reg [ 15: 0] buffer [0:7];
integer i;
always @(posedge clock)
be...
Verilog Programming part 21 ppt
... simulation time 0
#5 y = 1'b1; //completes at simulation time 5
#10 z = {x, y}; //completes at simulation time 15
#20 w = {y, x}; //completes at simulation time 35
end
Parallel blocks ...
#5 y = 1'b1;
#10 z = {x, y};
join
#20 w = {y, x};
end
N
amed blocks
Blocks can be given names.
• Local variables can be declared for the named block.
• Named blocks are a...
Verilog Programming part 30 ppt
... inside a stimulus module. Force the sum output to a & b & c_in for
the time between 15 and 35 units.
3:
A 1-bit full adder FA is defined with gates and with delay parameters as
shown ...
stimulus shown in Example 5- 9
on page 77. Explain the effect of
the full adder delays on the times when outputs of the adder appear.
(Use delays of 20 instead of 5 used in this stimulus.)...
Programming HandBook part 5 ppt
... ; float b [ 3 ] [ 4 ] ; char c [5 ] [6 ] ;
=> a [ 0 ] [0 ] a [ 0 ] [ 1 ]
a [ 1 ] [ 0 ] a [ 1 ] [ 1]
a [ 2 ] [ 0 ] a [ 2 ] [ 1 ]
Ví dụ 2 : #define Hang 5
# define Cot 6
int a [ Hang ] ... đến một int */
pnum = & num ; /* pnum chứa địa chỉ biến int num*/
giả sử : num = 5 ; => * pnum = 5 /* do * là toán tử nội dung */
Hai câu lệnh sau đây là tương đương
Num = 100 ;
(...