A simulation for a Von Neumann based Computer Architecture using Java.
A von neumann Architecture in which program data and instruction data are stored in the same memory
Main Memory Size 2048 * 32 from 0 to 1023 for instructions and from 1024 to 2047 for data
- 31 General purpose Registers from R1 to R31
- 1 Zero Registers named R0
- 1 program counter PC Registers Size 32 bits
Instruction Set supported
Name | Format | Operation |
---|---|---|
ADD | ADD R1 R2 R3 | R1 = R2 + R3 |
SUB | SUB R1 R2 R3 | R1 = R2 - R3 |
MUL | MUL R1 R2 R3 | R1 = R2 * R3 |
MOVI | MOVI R1 IMM | R1 = IMM |
JEQ | JEQ R1 R2 IMM\label | IF(R1 == R2) {PC = PC+1+IMM\ PC = label } |
AND | AND R1 R2 R3 | R1 = R2 & R3 |
XORI | XORI R1 R2 IMM | R1 = R2 ⊕ IMM |
JMP | JMP ADDRESS | PC = PC[31:28] |
LSL | LSL R1 R2 SHAMT | R1 = R2 << SHAMT |
LSR | LSR R1 R2 SHAMT | R1 = R2 >>> SHAMT |
MOVR | MOVR R1 R2 IMM | R1 = MEM[R2 + IMM] |
MOVM | MOVM R1 R2 IMM | MEM[R2 + IMM] = R1 |
Stages: 5
- Instruction Fetch (IF)
- Instruction Decode (ID)
- Execute (EX)
- Memory (MEM)
- Write Back (WB)
Pipeline: maximum 4 instructions running in parallel (IF) and (MEM) cannot be done in parallel.
project structure
.
├── Dockerfile
├── Makefile
├── pom.xml
├── README.md
├── run.sh
├── src
│ ├── main
│ │ ├── java
│ │ │ └── fillet
│ │ │ ├── App.java
│ │ │ ├── exceptions
│ │ │ │ ├── AddressOutOfRangeException.java
│ │ │ │ ├── InvalidInstructionException.java
│ │ │ │ ├── InvalidRegisterException.java
│ │ │ │ └── InvalidRegisterNumberException.java
│ │ │ ├── instructions
│ │ │ │ ├── HaltInstruction.java
│ │ │ │ ├── ImmediateInstruction.java
│ │ │ │ ├── Instruction.java
│ │ │ │ ├── InstructionFactory.java
│ │ │ │ ├── InstructionType.java
│ │ │ │ ├── JumpInstruction.java
│ │ │ │ └── RegisterInstruction.java
│ │ │ ├── logger
│ │ │ │ ├── destinations
│ │ │ │ │ ├── ConsoleLogger.java
│ │ │ │ │ ├── FileLogger.java
│ │ │ │ │ └── LogObserver.java
│ │ │ │ ├── Logger.java
│ │ │ │ ├── LogSubject.java
│ │ │ │ ├── outputs
│ │ │ │ │ ├── run-02-06-2022-15-04-37.log
│ │ │ │ │ ├── run-02-06-2022-23-11-07.log
│ │ │ │ │ ├── run-02-06-2022-23-11-36.log
│ │ │ │ │ ├── run-02-06-2022-23-53-15.log
│ │ │ │ │ └── run-04-06-2022-11-47-52.log
│ │ │ │ └── services
│ │ │ │ ├── ColorStringService.java
│ │ │ │ ├── CreateLogFileService.java
│ │ │ │ ├── GenerateTableService.java
│ │ │ │ ├── InitLoggerService.java
│ │ │ │ ├── LogEntityService.java
│ │ │ │ └── SegmentType.java
│ │ │ ├── memory
│ │ │ │ ├── MainMemory.java
│ │ │ │ └── RegisterFile.java
│ │ │ ├── operations
│ │ │ │ ├── haltoperations
│ │ │ │ │ ├── Halt.java
│ │ │ │ │ ├── HaltOperation.java
│ │ │ │ │ └── HaltOperationFactory.java
│ │ │ │ ├── immediateoperations
│ │ │ │ │ ├── ImmediateOperation.java
│ │ │ │ │ ├── ImmediateOperationFactory.java
│ │ │ │ │ ├── JumpIfEqual.java
│ │ │ │ │ ├── MoveImmediate.java
│ │ │ │ │ ├── MoveToMemory.java
│ │ │ │ │ ├── MoveToRegister.java
│ │ │ │ │ └── XORImmediate.java
│ │ │ │ ├── jumpoperations
│ │ │ │ │ ├── Jump.java
│ │ │ │ │ ├── JumpOperation.java
│ │ │ │ │ └── JumpOperationFactory.java
│ │ │ │ ├── Operation.java
│ │ │ │ ├── OperationFactory.java
│ │ │ │ ├── OperationType.java
│ │ │ │ └── registeroperations
│ │ │ │ ├── Add.java
│ │ │ │ ├── And.java
│ │ │ │ ├── LogicalShiftLeft.java
│ │ │ │ ├── LogicalShiftRight.java
│ │ │ │ ├── Multiply.java
│ │ │ │ ├── RegisterOperation.java
│ │ │ │ ├── RegisterOperationFactory.java
│ │ │ │ └── Sub.java
│ │ │ ├── programs
│ │ │ │ ├── caProgram.txt
│ │ │ │ ├── empty-file.txt
│ │ │ │ ├── final-isA.txt
│ │ │ │ ├── negative-jump.txt
│ │ │ │ ├── program1.txt
│ │ │ │ ├── spicy-iprogram.txt
│ │ │ │ ├── spicy-jprogram.txt
│ │ │ │ ├── spicy-rprogram.txt
│ │ │ │ └── test-sum.txt
│ │ │ ├── signals
│ │ │ │ └── Signals.java
│ │ │ └── utils
│ │ │ ├── Binary.java
│ │ │ ├── Decoder.java
│ │ │ ├── Parser.java
│ │ │ ├── Path.java
│ │ │ └── Program.java
│ │ └── resources
│ └── test
│ └── java
│ └── tests
│ ├── DecoderTest.java
│ ├── ImmediateInstructionTest.java
│ ├── InstructionFactoryTest.java
│ ├── JumpInstructionTest.java
│ ├── MainMemoryTest.java
│ ├── ParserTest.java
│ ├── RegisterFileTest.java
│ └── RegisterInstructionTest.java
└── target
- Parser handles labels. 💥
- Parser handles comments. ######
- A logger, not only outputs to the console but also outputs a log file named after the current time stamp.
- The code is thoroughly tested by JUnit 5.
- Used CI in the whole process.
- We used a containerized environment using Docker 🐳.
- We used Maven as a build system and dependency manager.
- We applied some spectacular design patterns such as:
- Singleton
- Observer
- Command
- Factory
- Decorator
Technology | Description |
---|---|
Java | A hated programming langauge 👎 |
Maven | A build tool and dependancy manager |
Junit 5 | Java testing framework |
Docker 🐳 | Container |
> make test
> mvn test
Docker will guarantee more consistency and make sure you are in a isolated enviroment and not affected by your local machine
> docker build -t fillet .
> docker run fillet
or even
> make docker-test
> mvn compile exec:java -Dexec.mainClass=fillet.App
Example
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 1 | instruction 1 | ------------- | ------------- | ------------- | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 2 | ------------- | instruction 1 | ------------- | ------------- | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 3 | instruction 2 | instruction 1 | ------------- | ------------- | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 4 | ------------- | instruction 2 | instruction 1 | ------------- | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 5 | instruction 3 | instruction 2 | instruction 1 | ------------- | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 6 | ------------- | instruction 3 | instruction 2 | instruction 1 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 7 | instruction 4 | instruction 3 | instruction 2 | ------------- | instruction 1 |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 8 | ------------- | instruction 4 | instruction 3 | instruction 2 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 9 | instruction 5 | instruction 4 | instruction 3 | ------------- | instruction 2 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 1 set to -131072
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 10 | ------------- | instruction 5 | instruction 4 | instruction 3 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 11 | instruction 6 | instruction 5 | instruction 4 | ------------- | instruction 3 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 2 set to 131071
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 12 | ------------- | instruction 6 | instruction 5 | instruction 4 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 13 | instruction 7 | instruction 6 | instruction 5 | ------------- | instruction 4 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 3 set to 3
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 14 | ------------- | instruction 7 | instruction 6 | instruction 5 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 15 | instruction 8 | instruction 7 | instruction 6 | ------------- | instruction 5 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 4 set to 4
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 16 | ------------- | instruction 8 | instruction 7 | instruction 6 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 17 | instruction 9 | instruction 8 | instruction 7 | ------------- | instruction 6 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 5 set to 5
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 18 | ------------- | instruction 9 | instruction 8 | instruction 7 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 19 | instruction 10 | instruction 9 | instruction 8 | ------------- | instruction 7 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 6 set to -6
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 20 | ------------- | instruction 10 | instruction 9 | instruction 8 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 21 | instruction 11 | instruction 10 | instruction 9 | ------------- | instruction 8 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 7 set to -7
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 22 | ------------- | instruction 11 | instruction 10 | instruction 9 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 23 | instruction 12 | instruction 11 | instruction 10 | ------------- | instruction 9 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 31 set to 31
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 24 | ------------- | instruction 12 | instruction 11 | instruction 10 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 25 | instruction 13 | instruction 12 | instruction 11 | ------------- | instruction 10 |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 26 | ------------- | instruction 13 | instruction 12 | instruction 11 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 27 | instruction 14 | instruction 13 | instruction 12 | ------------- | instruction 11 |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 28 | ------------- | instruction 14 | instruction 13 | instruction 12 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 29 | instruction 15 | instruction 14 | instruction 13 | ------------- | instruction 12 |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 30 | ------------- | instruction 15 | instruction 14 | instruction 13 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 31 | instruction 16 | instruction 15 | instruction 14 | ------------- | instruction 13 |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 32 | ------------- | instruction 16 | instruction 15 | instruction 14 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 33 | instruction 17 | instruction 16 | instruction 15 | ------------- | instruction 14 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 8 set to -1
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 34 | ------------- | instruction 17 | instruction 16 | instruction 15 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 35 | instruction 18 | instruction 17 | instruction 16 | ------------- | instruction 15 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 9 set to 131068
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 36 | ------------- | instruction 18 | instruction 17 | instruction 16 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 37 | instruction 19 | instruction 18 | instruction 17 | ------------- | instruction 16 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 10 set to 12
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 38 | ------------- | instruction 19 | instruction 18 | instruction 17 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 39 | instruction 20 | instruction 19 | instruction 18 | ------------- | instruction 17 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 11 set to 4
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 40 | ------------- | instruction 20 | instruction 19 | instruction 18 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 41 | instruction 21 | instruction 20 | instruction 19 | ------------- | instruction 18 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 12 set to 1
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 42 | ------------- | instruction 21 | instruction 20 | instruction 19 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 43 | instruction 22 | instruction 21 | instruction 20 | ------------- | instruction 19 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 13 set to -24
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 44 | ------------- | instruction 22 | instruction 21 | instruction 20 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 45 | instruction 23 | instruction 22 | instruction 21 | ------------- | instruction 20 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 14 set to 536870911
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 46 | ------------- | instruction 23 | instruction 22 | instruction 21 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
Data stored at address 1024 updated to 31
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 47 | instruction 24 | instruction 23 | instruction 22 | ------------- | instruction 21 |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 48 | ------------- | instruction 24 | instruction 23 | instruction 22 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
Data stored at address 1025 updated to 3
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 49 | instruction 25 | instruction 24 | instruction 23 | ------------- | instruction 22 |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 50 | ------------- | instruction 25 | instruction 24 | instruction 23 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
Data stored at address 1026 updated to 4
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 51 | instruction 26 | instruction 25 | instruction 24 | ------------- | instruction 23 |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 52 | ------------- | instruction 26 | instruction 25 | instruction 24 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
Data stored at address 1027 updated to 5
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 53 | instruction 27 | instruction 26 | instruction 25 | ------------- | instruction 24 |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 54 | ------------- | instruction 27 | instruction 26 | instruction 25 | ------------- |
+----------+------------------+------------------+------------------+------------------+------------------+
+----------+------------------+------------------+------------------+------------------+------------------+
| Cycle | Fetch | Decode | Execute | Memory | WriteBack |
+----------+------------------+------------------+------------------+------------------+------------------+
| 55 | instruction 28 | instruction 27 | instruction 26 | ------------- | instruction 25 |
+----------+------------------+------------------+------------------+------------------+------------------+
Register 15 set to 31
+------------+----------------+------------------------------------+
| Address | ValueAsInt | ValueAsBinary |
+------------+----------------+------------------------------------+
| 0 | 805306373 | 00110000000000000000000000000101 |
| 1 | 813826048 | 00110000100000100000000000000000 |
| 2 | 822214655 | 00110001000000011111111111111111 |
| 3 | 830472195 | 00110001100000000000000000000011 |
| 4 | 838860804 | 00110010000000000000000000000100 |
| 5 | 847249413 | 00110010100000000000000000000101 |
| 6 | 855900154 | 00110011000000111111111111111010 |
| 7 | 864288761 | 00110011100000111111111111111001 |
| 8 | 1065353247 | 00111111100000000000000000011111 |
| 9 | 805306373 | 00110000000000000000000000000101 |
| 10 | 805306373 | 00110000000000000000000000000101 |
| 11 | 805306373 | 00110000000000000000000000000101 |
| 12 | 805306373 | 00110000000000000000000000000101 |
| 13 | 67387392 | 00000100000001000100000000000000 |
| 14 | 344481792 | 00010100100010000110000000000000 |
| 15 | 621576192 | 00100101000011001000000000000000 |
| 16 | 1435533312 | 01010101100100001000000000000000 |
| 17 | 1712586756 | 01100110000101000000000000000100 |
| 18 | -2036858878 | 10000110100110000000000000000010 |
| 19 | -1759772669 | 10010111000111000000000000000011 |
| 20 | -1082129408 | 10111111100000000000010000000000 |
| 21 | -1317010431 | 10110001100000000000010000000001 |
| 22 | -1308621822 | 10110010000000000000010000000010 |
| 23 | -1300233213 | 10110010100000000000010000000011 |
| 24 | -1484782592 | 10100111100000000000010000000000 |
| 25 | -1 | 11111111111111111111111111111111 |
| 26 | 0 | 00000000000000000000000000000000 |
| 27 | 0 | 00000000000000000000000000000000 |
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+------------+----------------+------------------------------------+
+------------+--------------+
| Register | Value |
+------------+--------------+
| 0 | 0 |
| 1 | -131072 |
| 2 | 131071 |
| 3 | 3 |
| 4 | 4 |
| 5 | 5 |
| 6 | -6 |
| 7 | -7 |
| 8 | -1 |
| 9 | 131068 |
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| 12 | 1 |
| 13 | -24 |
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| 30 | 0 |
| 31 | 31 |
+------------+--------------+