93 lines
2.2 KiB
Systemverilog
93 lines
2.2 KiB
Systemverilog
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class sysreg_driver;
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sysreg_trans tr;
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//interface
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virtual sysreg_if vif;
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virtual spi_if wif;
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function new();
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endfunction
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extern task do_drive();
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extern task make_intr();
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endclass : sysreg_driver
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task sysreg_driver::do_drive();
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fork
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while(1) begin
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make_intr();
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end
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join
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endtask
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task sysreg_driver::make_intr();
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int cnt=0;
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vif.status =32'b0;
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cnt = 0;
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tr = new();
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if(!tr.randomize())
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$fatal(0,"Randomize Failed");
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while(cnt<3000) begin
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@(posedge wif.clk);
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cnt = cnt + 1;
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case(cnt)
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tr.status_time[28]: vif.status[28] <=1'b1;
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tr.status_time[27]: vif.status[27] <=1'b1;
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tr.status_time[26]: vif.status[26] <=1'b1;
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tr.status_time[25]: vif.status[25] <=1'b1;
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tr.status_time[24]: vif.status[24] <=1'b1;
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tr.status_time[19]: vif.status[19] <=1'b1;
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tr.status_time[18]: vif.status[18] <=1'b1;
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tr.status_time[17]: vif.status[17] <=1'b1;
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tr.status_time[16]: vif.status[16] <=1'b1;
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tr.status_time[11]: vif.status[11] <=1'b1;
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tr.status_time[10]: vif.status[10] <=1'b1;
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tr.status_time[ 9]: vif.status[ 9] <=1'b1;
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tr.status_time[ 8]: vif.status[ 8] <=1'b1;
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tr.status_time[ 3]: vif.status[ 3] <=1'b1;
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tr.status_time[ 2]: vif.status[ 2] <=1'b1;
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tr.status_time[ 1]: vif.status[ 1] <=1'b1;
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tr.status_time[ 0]: vif.status[ 0] <=1'b1;
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endcase
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//$display(vif.status);
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case(cnt-1)
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tr.status_time[28]: vif.status[28] <=1'b0;
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tr.status_time[27]: vif.status[27] <=1'b0;
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tr.status_time[26]: vif.status[26] <=1'b0;
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tr.status_time[25]: vif.status[25] <=1'b0;
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tr.status_time[24]: vif.status[24] <=1'b0;
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tr.status_time[19]: vif.status[19] <=1'b0;
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tr.status_time[18]: vif.status[18] <=1'b0;
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tr.status_time[17]: vif.status[17] <=1'b0;
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tr.status_time[16]: vif.status[16] <=1'b0;
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tr.status_time[11]: vif.status[11] <=1'b0;
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tr.status_time[10]: vif.status[10] <=1'b0;
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tr.status_time[ 9]: vif.status[ 9] <=1'b0;
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tr.status_time[ 8]: vif.status[ 8] <=1'b0;
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tr.status_time[ 3]: vif.status[ 3] <=1'b0;
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tr.status_time[ 2]: vif.status[ 2] <=1'b0;
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tr.status_time[ 1]: vif.status[ 1] <=1'b0;
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tr.status_time[ 0]: vif.status[ 0] <=1'b0;
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endcase
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end
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endtask : make_intr
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