ULTRA [ resource.optimyar.com ]

Linux uranus.pws-dns.net 5.14.0-570.46.1.el9_6.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Sep 24 05:41:59 EDT 2025 x86_64

LiteSpeed

31.214.174.197 | Your IP: 216.73.216.214

Cant read [ /etc/named.conf ]

[ drwxr-xr-x ]

/ opt / alt / python37 / share / doc / alt-python37-pyparsing-doc / examples / verilog /

Home Upload Mass Deface Mass Delete Back Connect Notify

xor.v

// Verilog HDL for "gates.lib", "xor_gate" "_functional"
// Module XOR gate
module xor_gate (a, b, clk, out);

input
	a, b, clk;

output
	out;
reg 
	out;

parameter
	t_hold=5,
	t_setup=10,
	delay=15,

warning_file=3;  // multichannel description of a warning file

reg
	a_internal, b_internal, clk_internal,
	a_state, b_state,          // internal state at inputs a and b
	a_violation, b_violation,  // timing violation at inputs a and b
	a_set, b_set;		   // signals determining the moment when
				   // the state of the a,b inputs changes to "1"
integer
	data_delay, 	// delay between a (b) and a_internal (b_internal)
	clk_delay, 	// delay between clk and clk_internal
	out_delay, 	// delay between clk_internal and out
	out_value,	// output value in a given clock cycle
	last_clk_time;	// time when the last clock pulse appeared

initial 
	begin
// define delays between inputs & outputs and the corresponding
//  internal auxiliary registers
	  	if(t_hold<0)
		  begin
	    		data_delay = -t_hold;
	    	  	clk_delay = 0;
		  	out_delay = delay;
		  end
	  	else
		  begin
	    	  	data_delay = 0;
	    	  	clk_delay = t_hold;
		  	out_delay=delay-t_hold;
		  end

// clear internal registers and the output signal
		a_internal = 0;
		b_internal = 0;
		clk_internal = 0;
		last_clk_time = 0;
		a_state = 0;
		b_state = 0;
		a_violation = 0;
		b_violation = 0;
		a_set = 0;
		b_set = 0;
		out = 0;
	end

always @(posedge a) 	// Execute at positive edge of a
	  a_internal <= #(data_delay) a;

always @(posedge b) 	// Execute at positive edge of b
	  b_internal <= #(data_delay) b;

always @(posedge clk) 	// Execute at positive edge of clk
	  clk_internal <= #(clk_delay) clk;

always @(posedge a_internal)
	begin
// setting an internal state at the input a
		a_violation = 1;
		if (a_internal === 1)
		  a_set <= #(t_hold+t_setup) 1;

a_internal <= 0;
	end

always @(posedge b_internal)
	begin
// setting an internal state at the input a
		b_violation = 1;
		if (b_internal === 1)
		  b_set <= #(t_hold+t_setup) 1;

b_internal <= 0;
	end

always @(posedge a_set)
	begin
		if ($stime - last_clk_time >= t_hold+t_setup)
			a_state = a_state^1;
		else
		  begin
			a_state = 1'bx;

// generating a warning
		  	$fwrite(warning_file, 
			 "Violation of hold/setup time in module %m.\n");
			$fwrite(warning_file,
			"Input A pulse at %0d,",
			 $stime-data_delay-t_hold-t_setup);
			$fwrite(warning_file,
			"\tClock pulse at %0d.\n", last_clk_time-clk_delay);
		  end

a_violation <= 0;
		a_set <= 0;
	end

always @(posedge b_set)
	begin
		if ($stime - last_clk_time >= t_hold+t_setup)
			b_state = b_state^1;
		else
		  begin
			b_state = 1'bx;

// generating a warning
		  	$fwrite(warning_file, 
			 "Violation of hold/setup time in module %m.\n");
			$fwrite(warning_file,
			"Input B pulse at %0d,",
			 $stime-data_delay-t_hold-t_setup);
			$fwrite(warning_file,
			"\tClock pulse at %0d.\n", last_clk_time-clk_delay);
		  end

b_violation <= 0;
		b_set <= 0;
	end

always @(posedge clk_internal)	
	begin
// computing the output
		if ((clk_internal === 1'bx) || (a_violation | b_violation))
		  out_value = 1'bx;
		else
		  out_value = a_state ^ b_state;

// transfering the result to the output
		out <= #(out_delay) out_value;
		out <= #(out_delay+2) 0;

// clearing the internal state of A and B inputs
		a_state  <= 0;
		b_state  <= 0;

clk_internal <= 0;
		last_clk_time = $stime;
	end

endmodule

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:48
..	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:48
hasCompilerDirectives	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:48
new	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:48
new2	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:48
new3	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:48
parseOutput	dir	-	root/root	drwxr-xr-x	2024-07-05 06:23:48
Ctr3sr.v	text/plain	464 B	root/root	-rw-r--r--	2020-12-23 05:32:43
INIT	text/plain	22 B	root/root	-rw-r--r--	2020-12-23 05:32:43
RANDOM_GATE	text/plain	2.21 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
RANDOM_INTERCONNECT	text/plain	488 B	root/root	-rw-r--r--	2020-12-23 05:32:43
SEED	text/plain	14 B	root/root	-rw-r--r--	2020-12-23 05:32:43
TestCtr3sr.v	text/x-ruby	591 B	root/root	-rw-r--r--	2020-12-23 05:32:43
addacc.v	text/plain	810 B	root/root	-rw-r--r--	2020-12-23 05:32:43
addacc1_dro.v	text/plain	3.36 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
addacc1_t1ff.v	text/plain	4.32 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
addacc_conf.v	text/plain	2.37 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
addacc_dro.v	text/plain	3.19 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
addacc_t1ff.v	text/plain	4.3 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
allParseOutput.zip	application/zip	259.05 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
and.v	text/plain	3.22 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
and_gate.v	text/plain	3.99 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
conf.v	text/plain	1.96 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
core_test.v	text/plain	2.21 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
count2bit.v	text/plain	867 B	root/root	-rw-r--r--	2020-12-23 05:32:43
count_all_prims_test.v	text/plain	1.29 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
count_loads_test.v	text/plain	4.32 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
dds.v	text/plain	2.33 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
diff_udp.v	text/plain	395 B	root/root	-rw-r--r--	2020-12-23 05:32:43
display_all_nets_test.v	text/plain	1.43 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
div16.v	text/plain	7.36 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
dro.v	text/plain	2.37 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
dro1_cell.v	text/plain	3.14 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
dro_cell.v	text/plain	3.13 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
dump_and_fill_mem_test.v	text/plain	3.94 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
exprinfo_test.v	text/plain	1.13 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
fetch_values_test.v	text/plain	930 B	root/root	-rw-r--r--	2020-12-23 05:32:43
ff.v	text/plain	327 B	root/root	-rw-r--r--	2020-12-23 05:32:43
ff_test.v	text/plain	979 B	root/root	-rw-r--r--	2020-12-23 05:32:43
fifo.v	text/plain	6.46 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
find_driver.tcl.gz	text/plain	3.9 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
framer.v	text/plain	8.3 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
func_72bit_test.v	text/plain	832 B	root/root	-rw-r--r--	2020-12-23 05:32:43
gen.v	text/plain	895 B	root/root	-rw-r--r--	2020-12-23 05:32:43
gencrc.v	text/plain	9.56 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
gzip.exe	application/x-dosexec	89.5 KB	root/root	-rwxr-xr-x	2020-12-23 05:32:43
hadd.v	text/plain	5.92 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
hello_test.v	text/plain	686 B	root/root	-rw-r--r--	2020-12-23 05:32:43
in_port.v	text/plain	3.11 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
inv.v	text/plain	2.36 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
inv_cell.v	text/plain	3.13 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
invoke_commands_test.v	text/plain	944 B	root/root	-rw-r--r--	2020-12-23 05:32:43
invoke_options_test.v	text/plain	1.34 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
jtl2.v	text/plain	292 B	root/root	-rw-r--r--	2020-12-23 05:32:43
jutzi	text/plain	4.65 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
list_cells_test.v	text/plain	3.96 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
list_nets_test.v	text/plain	1.27 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
list_parameters_test.v	text/plain	1.48 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
list_path_delays_test.v	text/plain	1.48 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
list_pathout_ports_test.v	text/plain	1.46 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
list_prim_delays_test.v	text/plain	1.42 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
load_in.v	text/plain	132 B	root/root	-rw-r--r--	2020-12-23 05:32:43
load_out.v	text/plain	101 B	root/root	-rw-r--r--	2020-12-23 05:32:43
mem_arb.v	text/plain	5.22 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
mipd_delays_test.v	text/plain	1.36 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
mult16.v	text/plain	3.2 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
multi21_udp.v	text/plain	181 B	root/root	-rw-r--r--	2020-12-23 05:32:43
my_monitor1_test.v	text/plain	992 B	root/root	-rw-r--r--	2020-12-23 05:32:43
my_monitor2_test.v	text/plain	992 B	root/root	-rw-r--r--	2020-12-23 05:32:43
my_monitor_test.v	text/plain	1.25 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
my_strobe_test.v	text/plain	2.16 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
myram64x16.v	text/plain	573 B	root/root	-rw-r--r--	2020-12-23 05:32:43
nco.v	text/plain	7.24 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
ndro.v	text/plain	3.05 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
nodeinfo_test.v	text/plain	1.83 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
onehot.v	text/plain	5.76 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
or.v	text/plain	3.21 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
out_port.v	text/plain	2.7 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
pic.v	text/plain	67.36 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
pipe1.v	text/plain	5.24 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
pipe2.v	text/plain	15.17 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
pl.v	text/plain	14.98 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
pli_handbook_examples_pc.zip	application/zip	363.72 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
port_info_test.v	text/plain	1.12 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
pow_test.v	text/plain	1.31 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
primitives.v	text/plain	3.92 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
propagatep_test.v	text/plain	1.44 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
psr1.v	text/plain	597 B	root/root	-rw-r--r--	2020-12-23 05:32:43
psr1_conf.v	text/plain	2.37 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
psr1_dro.v	text/plain	3.18 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
psr1_split.v	text/plain	873 B	root/root	-rw-r--r--	2020-12-23 05:32:43
psr2.v	text/plain	467 B	root/root	-rw-r--r--	2020-12-23 05:32:43
psr2_and.v	text/plain	4.04 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
psr2_split.v	text/plain	875 B	root/root	-rw-r--r--	2020-12-23 05:32:43
read_4state_value_test.v	text/plain	1.17 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
read_attribute_test.v	text/plain	1.32 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
read_delays_test.v	text/plain	1.22 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
read_stimulus_short_test.v	text/plain	1.82 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
read_stimulus_test.v	text/plain	2 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
read_strengthval_test.v	text/plain	1.25 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
read_test_vector_test.v	text/plain	1.21 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
read_timeval_test.v	text/plain	826 B	root/root	-rw-r--r--	2020-12-23 05:32:43
read_vector_test.v	text/plain	1.2 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
read_vecval_test.v	text/plain	881 B	root/root	-rw-r--r--	2020-12-23 05:32:43
realpow_test.v	text/plain	1.07 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
rf.v	text/plain	32.76 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_comb_calltf_shell.v	text/plain	1.66 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_comb_calltf_test.v	text/plain	1.53 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_comb_misctf_shell.v	text/plain	1.59 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_comb_misctf_test.v	text/plain	1.53 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_combinational_shell.v	text/plain	1.59 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_combinational_test.v	text/plain	1.53 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_latched_shell.v	text/plain	1.63 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_latched_test.v	text/plain	1.83 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_sequential_shell.v	text/plain	1.63 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_sequential_test.v	text/plain	1.61 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_synchronized_shell.v	text/plain	1.59 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_synchronized_test.v	text/plain	1.72 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_with_delays_shell.v	text/plain	3.13 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sci_alu_with_delays_test.v	text/plain	1.53 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
set_mipd_delays_test.v	text/plain	1.35 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
show_all_nets_test.v	text/plain	1.28 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
show_all_signals1_test.v	text/plain	1.26 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
show_all_signals2_test.v	text/plain	1.31 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
show_all_signals3_test.v	text/plain	1.3 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
show_all_signals_1_test.v	text/plain	1.44 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
show_all_signals_2_test.v	text/plain	1.33 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
show_all_signals_3_test.v	text/plain	1.3 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
show_value_test.v	text/plain	1.45 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sig_gen.v	text/plain	404 B	root/root	-rw-r--r--	2020-12-23 05:32:43
simple_core.v	text/plain	2.84 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
splitter.v	text/plain	398 B	root/root	-rw-r--r--	2020-12-23 05:32:43
sqrt32.v	text/plain	14.84 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sqrt8m.v	text/x-ruby	4.01 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
sr_nv_ctf.v	text/plain	2.52 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
srcnt.v	text/plain	2.61 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
string.v	text/plain	1.66 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
t1ff.v	text/plain	3.47 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
testcase.v	text/plain	1.97 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
testcase2.v	text/csv	3.13 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
testcase3.v	text/plain	8.7 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
testcase4.v	text/plain	1.78 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
testcase5.v	text/plain	973 B	root/root	-rw-r--r--	2020-12-23 05:32:43
tff.v	text/plain	1.35 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
timescale_info_test.v	text/plain	1.18 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
usb.v	text/plain	15.81 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
use_workarea_test.v	text/plain	884 B	root/root	-rw-r--r--	2020-12-23 05:32:43
utmi_if.v	text/plain	6.56 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
vpi_utilities_test.v	text/plain	1.22 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
wb.v	text/plain	5.33 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
wpulse.v	text/plain	3.99 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
xor.v	text/plain	3.35 KB	root/root	-rw-r--r--	2020-12-23 05:32:43
zzzexample.v	text/plain	2.31 KB	root/root	-rw-r--r--	2020-12-23 05:32:43