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PoC: tb: Add fetch instruction helper task to tb_tk1

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This commit is contained in:
Mikael Ågren 2025-02-06 12:33:04 +01:00
parent ed10222999
commit e9f72a8530
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GPG Key ID: E02DA3D397792C46
1 changed files with 19 additions and 4 deletions
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23
hw/application_fpga/core/tk1/tb/tb_tk1.v
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@ -378,6 +378,24 @@ module tb_tk1 ();
endtask // read_check_word
//----------------------------------------------------------------
// fetch_instruction()
//
// Simulate fetch of an instruction at specified address.
//----------------------------------------------------------------
task fetch_instruction(input [31 : 0] address);
begin : fetch_instruction
tb_cpu_addr = address;
tb_cpu_instr = 1'h1;
tb_cpu_valid = 1'h1;
#(CLK_PERIOD);
tb_cpu_addr = 32'h0;
tb_cpu_instr = 1'h0;
tb_cpu_valid = 1'h0;
end
endtask // fetch_instruction
//----------------------------------------------------------------
// test1()
// Read out name and version.
@ -634,10 +652,7 @@ module tb_tk1 ();
$display("--- test9: force_trap before illegal access: 0x%1x", tb_force_trap);
$display("--- test9: Creating an illegal access.");
tb_cpu_addr = 32'h13371337;
tb_cpu_instr = 1'h1;
tb_cpu_valid = 1'h1;
#(2 * CLK_PERIOD);
fetch_instruction(32'h13371337);
$display("--- test9: cpu_addr: 0x%08x, cpu_instr: 0x%1x, cpu_valid: 0x%1x", tb_cpu_addr,
tb_cpu_instr, tb_cpu_valid);
$display("--- test9: force_trap: 0x%1x", tb_force_trap);