URL
https://opencores.org/ocsvn/qaz_libs/qaz_libs/trunk
Subversion Repositories qaz_libs
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/qaz_libs
- from Rev 5 to Rev 6
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Rev 5 → Rev 6
/trunk/tb_class/src/tb_clk.sv
0,0 → 1,34
// -------------------------------------------------------------------- |
// |
// -------------------------------------------------------------------- |
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`include "../../../../tb_class/src/tb_clk_class.sv" |
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module |
tb_clk |
#( |
parameter PERIOD = 0 |
) |
( |
output clock |
); |
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tb_clk_class tb_clk_clk_c; |
tb_clk_if tb_clk_driver(); |
assign clock = tb_clk_driver.clk; |
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initial |
begin |
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tb_clk_c = new( tb_clk_driver ); |
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if( PERIOD != 0 ) |
tb_clk_clk_c.init_basic_clock( PERIOD ); |
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end |
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endmodule |
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/trunk/tb_class/src/tb_base.sv
0,0 → 1,65
// -------------------------------------------------------------------- |
// |
// -------------------------------------------------------------------- |
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`include "../../../../tb_class/src/tb_clk_class.sv" |
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module |
tb_base |
#( |
parameter PERIOD = 0, |
parameter ASSERT_TIME = 0 |
) |
( |
output clock, |
); |
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// -------------------------------------------------------------------- |
// |
task assert_reset |
( |
input time assert_reset |
); |
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reset = 1; |
$display("^^^ %16.t | %m | Reset asserted!.", $time ); |
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#assert_reset; |
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reset = 0; |
$display("^^^ %16.t | %m | Reset deasserted!.", $time ); |
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endmodule |
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// -------------------------------------------------------------------- |
// |
tb_clk_class tb_clk_clk_c; |
tb_clk_if tb_clk_driver(); |
assign clock = tb_clk_driver.clk; |
time reset_assert = (PERIOD * 5) + (PERIOD / 3); |
logic init_done = 0; |
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initial |
begin |
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reset = 1; |
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tb_clk_c = new( tb_clk_driver ); |
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if( PERIOD != 0 ) |
tb_clk_clk_c.init_basic_clock( PERIOD ); |
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if( ASSERT_TIME != 0 ) |
reset_assert( ASSERT_TIME ); |
else if( reset_assert != 0 ) |
reset_assert( reset_assert ); |
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init_done = 1; |
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end |
endmodule |
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/trunk/tb_class/src/tb_clk_class.sv
0,0 → 1,86
// -------------------------------------------------------------------- |
// |
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`timescale 1ps/1ps |
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// -------------------------------------------------------------------- |
// |
interface tb_clk_if |
logic clk = 0; |
logic enable = 0; |
time period; |
event clk_rise; |
event clk_fall; |
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modport tb_m |
( |
output clk |
); |
endinterface: tb_clk_if |
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// -------------------------------------------------------------------- |
// |
class |
tb_clk_class; |
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virtual tb_clk_if tb; |
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// -------------------------------------------------------------------- |
// |
function |
new |
( |
virtual tb_clk_if tb |
); |
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this.tb = tb; |
endfunction: new |
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// -------------------------------------------------------------------- |
// |
function |
init_basic_clock |
( |
time period |
); |
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this.period = period; |
this.enable = 1; |
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$display("^^^ %16.t | %m | Starting clock with period %t.", $time, period ); |
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fork |
forever |
if( tb.enable ) |
begin |
#(period/2) tb.clk = 1; |
-> tb.clk_rise; |
#(period/2) tb.clk = 0; |
-> tb.clk_fall; |
end |
join_none |
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endfunction: init_basic_clock |
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// -------------------------------------------------------------------- |
// |
task |
enable_clock |
( |
logic enable |
); |
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tb.enable = enable; |
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$display("^^^ %16.t | %m | Clock Enable = %h.", $time, enable ); |
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endtask: enable_clock |
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endclass: tb_clk_class |
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