Exemple #1
0
        public void TestSW()
        {
            var cpu = new CPU();
            cpu.RegWrite(5, 123456789);
            cpu.RegWrite(6, 4 << 2);

            const string instr = "sw $5, 4($6)";

            var instructionAdd = new SW(instr, 0, 5, 4, 6);
            cpu.AddInstruction(instructionAdd);

            var expectedRecords = new List<ExecutionRecordList>();
            int clockCycle = 0;

            cpu.RunClock();
            expectedRecords.Add(new ExecutionRecordList());
            expectedRecords[clockCycle].Add(new ExecutionRecord(ExecutionType.Fetch, instr, 0, null));
            clockCycle++;
            Assert.IsTrue(expectedRecords.SequenceEqual(cpu.ExecutionRecords));

            cpu.RunClock();
            expectedRecords.Add(new ExecutionRecordList());
            expectedRecords[clockCycle].Add(new ExecutionRecord(ExecutionType.Decode, "SW: rs = $6, rt = $5, imm = 4", 0, null));
            clockCycle++;
            Assert.IsTrue(expectedRecords.SequenceEqual(cpu.ExecutionRecords));

            cpu.RunClock();
            expectedRecords.Add(new ExecutionRecordList());
            expectedRecords[clockCycle].Add(new ExecutionRecord(ExecutionType.Execute, "SW Address = 16 + 4 = 20", 0, null));
            clockCycle++;
            Assert.IsTrue(expectedRecords.SequenceEqual(cpu.ExecutionRecords));

            cpu.RunClock();
            expectedRecords.Add(new ExecutionRecordList());
            expectedRecords[clockCycle].Add(new ExecutionRecord(ExecutionType.Memory, "Value written in memory = 123456789", 0, null));
            clockCycle++;
            Assert.IsTrue(expectedRecords.SequenceEqual(cpu.ExecutionRecords));

            //Test value inside register file
            Assert.AreEqual(123456789, cpu.Load((4 << 2) + 4));
            Assert.AreEqual(clockCycle, cpu.ClockCycle);
        }