diff options
Diffstat (limited to 'nandgame/alu_tb.sv')
| -rw-r--r-- | nandgame/alu_tb.sv | 190 |
1 files changed, 95 insertions, 95 deletions
diff --git a/nandgame/alu_tb.sv b/nandgame/alu_tb.sv index cb5bfa5..1b05401 100644 --- a/nandgame/alu_tb.sv +++ b/nandgame/alu_tb.sv @@ -4,20 +4,20 @@ module alu_tb; -logic [15:0] in1; -logic [15:0] in2; -logic [1:0] opcode; -logic [15:0] result; -logic u, zx, sw; +logic [15:0] tst_in1; +logic [15:0] tst_in2; +logic [1:0] tst_opcode; +logic [15:0] tst_result; +logic tst_is_arith_nlogic, tst_zero_x, tst_swap_operands; alu uut ( - .X(in1), - .Y(in2), - .opcode(opcode), - .RES(result), - .u(u), - .zx(zx), - .sw(sw) + .X_in(tst_in1), + .Y_in(tst_in2), + .opcode_in(tst_opcode), + .result_out(tst_result), + .u_arith_nlogic_in(tst_is_arith_nlogic), + .zx_in(tst_zero_x), + .sw_in(tst_swap_operands) ); string filename; @@ -31,130 +31,130 @@ initial begin end initial begin - zx = 0; - sw = 0; + tst_zero_x = 0; + tst_swap_operands = 0; // Arith tests - u = 1; - in1 = 13; - in2 = 17; - opcode = ARITH_PLUS; + tst_is_arith_nlogic = 1; + tst_in1 = 13; + tst_in2 = 17; + tst_opcode = ARITH_PLUS; #1 - assert(result == 30) - else $error("Expected: 30, got: %d", result); + assert(tst_result == 30) + else $error("Expected: 30, got: %d", tst_result); #1 - in1 = 12; - in2 = 4; - opcode = ARITH_MINUS; + tst_in1 = 12; + tst_in2 = 4; + tst_opcode = ARITH_MINUS; #1 - assert(result == 8) - else $error("Expected: 8, got: %d", result); + assert(tst_result == 8) + else $error("Expected: 8, got: %d", tst_result); #1 - in1 = 12; - in2 = 13; - opcode = ARITH_MINUS; + tst_in1 = 12; + tst_in2 = 13; + tst_opcode = ARITH_MINUS; #1 - assert(result == 16'hffff) - else $error("Expected: 16'hffff, got: %d", result); + assert(tst_result == 16'hffff) + else $error("Expected: 16'hffff, got: %d", tst_result); #1 - in1 = 13; - in2 = 17; - opcode = ARITH_INC; + tst_in1 = 13; + tst_in2 = 17; + tst_opcode = ARITH_INC; #1 - assert(result == 14) - else $error("Expected: 14, got: %d", result); + assert(tst_result == 14) + else $error("Expected: 14, got: %d", tst_result); #1 - in1 = 13; - in2 = 17; - opcode = ARITH_DEC; + tst_in1 = 13; + tst_in2 = 17; + tst_opcode = ARITH_DEC; #1 - assert(result == 12) - else $error("Expected: 12, got: %d", result); + assert(tst_result == 12) + else $error("Expected: 12, got: %d", tst_result); #1 - in1 = 0; - in2 = 17; - opcode = ARITH_DEC; + tst_in1 = 0; + tst_in2 = 17; + tst_opcode = ARITH_DEC; #1 - assert(result == 16'hffff) - else $error("Expected: 16'hffff, got: %d", result); + assert(tst_result == 16'hffff) + else $error("Expected: 16'hffff, got: %d", tst_result); #1 // logic tests - u = 0; - in1 = 16'b1010; - in2 = 16'b1100; - opcode = LOGIC_AND; + tst_is_arith_nlogic = 0; + tst_in1 = 16'b1010; + tst_in2 = 16'b1100; + tst_opcode = LOGIC_AND; #1 - assert(result == 16'b1000) - else $error("Expected: 16'b1000, got: %d", result); + assert(tst_result == 16'b1000) + else $error("Expected: 16'b1000, got: %d", tst_result); #1 - in1 = 16'b1010; - in2 = 16'b1100; - opcode = LOGIC_OR; + tst_in1 = 16'b1010; + tst_in2 = 16'b1100; + tst_opcode = LOGIC_OR; #1 - assert(result == 16'b1110) - else $error("Expected: 16'b1110, got: %d", result); + assert(tst_result == 16'b1110) + else $error("Expected: 16'b1110, got: %d", tst_result); #1 - in1 = 16'b1010; - in2 = 16'b1100; - opcode = LOGIC_XOR; + tst_in1 = 16'b1010; + tst_in2 = 16'b1100; + tst_opcode = LOGIC_XOR; #1 - assert(result == 16'b0110) - else $error("Expected: 16'b0110, got: %d", result); + assert(tst_result == 16'b0110) + else $error("Expected: 16'b0110, got: %d", tst_result); #1 - in1 = 16'b1010101010101010; - opcode = LOGIC_NEGT; + tst_in1 = 16'b1010101010101010; + tst_opcode = LOGIC_NEGT; #1 - assert(result == 16'b0101010101010101) - else $error("Expected: 16'b0101010101010101, got: %d", result); + assert(tst_result == 16'b0101010101010101) + else $error("Expected: 16'b0101010101010101, got: %d", tst_result); #1 // zero - tests - zx = 1; - sw = 0; + tst_zero_x = 1; + tst_swap_operands = 0; // back to logic - u = 0; - in1 = 2; - in2 = 4; - opcode = LOGIC_OR; + tst_is_arith_nlogic = 0; + tst_in1 = 2; + tst_in2 = 4; + tst_opcode = LOGIC_OR; #1 - assert(result == 4) - else $error("Expected 4, got %d", result); + assert(tst_result == 4) + else $error("Expected 4, got %d", tst_result); #1 // back to arith - u = 1; - in1 = 2; - in2 = 4; - opcode = ARITH_PLUS; + tst_is_arith_nlogic = 1; + tst_in1 = 2; + tst_in2 = 4; + tst_opcode = ARITH_PLUS; #1 - assert(result == 4) - else $error("Expected 4, got %d", result); + assert(tst_result == 4) + else $error("Expected 4, got %d", tst_result); #1 // swap tests - zx = 0; - sw = 1; - u = 1; - in1 = 2; - in2 = 3; - opcode = ARITH_MINUS; + tst_zero_x = 0; + tst_swap_operands = 1; + tst_is_arith_nlogic = 1; + tst_in1 = 2; + tst_in2 = 3; + tst_opcode = ARITH_MINUS; #1 // 3 - 2 - assert(result == 1) - else $error("Expected 1, got %d", result); + assert(tst_result == 1) + else $error("Expected 1, got %d", tst_result); // zero-swap - zx = 1; - sw = 1; - u = 1; - in1 = 2; - in2 = 3; - opcode = ARITH_PLUS; + tst_zero_x = 1; + tst_swap_operands = 1; + tst_is_arith_nlogic = 1; + tst_in1 = 2; + tst_in2 = 3; + tst_opcode = ARITH_PLUS; #1 // 2 + 0 - assert(result == 2) - else $error("Expected 2, got %d", result); + assert(tst_result == 2) + else $error("Expected 2, got %d", tst_result); $finish(); end |