# Assignment3: Single-Cycle RISC-V CPU
Contributed by [dcciou](https://github.com/dcciou)

:::danger
You MUST write in English.
:::

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1.完成exercise1-3.6
2.Describe the operation of ‘Hello World in Chisel’ and enhance it by incorporating logic circuit.
2.pass the unit test
3.run hw2 on MyCPU
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# complete code
After fullfilled all blank, it showed:

[info] FibonacciTest:

[info] Single Cycle CPU

[info] - should recursively calculate Fibonacci(10)

[info] ExecuteTest:

[info] Execution of Single Cycle CPU

[info] - should execute correctly

[info] InstructionFetchTest:

[info] InstructionFetch of Single Cycle CPU

[info] - should fetch instruction

[info] ByteAccessTest:

[info] Single Cycle CPU

[info] - should store and load a single byte

[info] InstructionDecoderTest:

[info] InstructionDecoder of Single Cycle CPU

[info] - should produce correct control signal

[info] RegisterFileTest:

[info] Register File of Single Cycle CPU

[info] - should read the written content

[info] - should x0 always be zero

[info] - should read the writing content

[info] QuicksortTest:

[info] Single Cycle CPU

[info] - should perform a quicksort on 10 numbers

[info] Run completed in 47 seconds, 682 milliseconds.

[info] Total number of tests run: 9

[info] Suites: completed 7, aborted 0

[info] Tests: succeeded 9, failed 0, canceled 0, ignored 0, pending 0

[info] All tests passed.

[success] Total time: 68 s (01:08), completed Nov 27, 2023 8:45:17 PM

you can find my code [here](https://github.com/dcciou/assignment3)

# myCPU
The original way used the same register and performed an ecall after the calculation, without actually storing the three pieces of data. For the convenience of CPU testing, I have modified it to store the data on the stack, ensuring that the data is stored at 0x04, 0x08, 0x0a.

//add in main part
li sp, 0x0C 

//add in count_one part, before bnez t0,loop

 sw a6, 0(sp)     
 addi sp, sp, -4

During the conversion process, the following issue occurred because the makefile only converts .S files and not .s files.

make: *** No rule to make target 'hw2.asmbin', needed by 'update'. 

Then, I added a test for hw2 within cputest, which involves verifying the success of the calculation (you can find my code on [GitHub](https://github.com/dcciou/assignment3)).

The results are as follows:

[info] HW2Test:

[info] Single Cycle CPU

[info] - should count the number of one

[info] Run completed in 15 seconds, 321 milliseconds.

[info] Total number of tests run: 1

[info] Suites: completed 1, aborted 0

[info] Tests: succeeded 1, failed 0, canceled 0, ignored 0, pending 0

[info] All tests passed.

<!--
# 問題
## curl沒載(command not found)
## JDK11 沒安裝教學
To install Eclipse Temurin JDK 11 on Ubuntu, you can follow these steps:

1. **Install Necessary Packages**: First, make sure that you have all the necessary packages installed on your system:

   sudo apt-get install -y wget apt-transport-https gnupg

2. **Download and Add the GPG Key**: Eclipse Adoptium uses a GPG key to sign their packages. Download and add this key to your system:

   wget -O - https://packages.adoptium.net/artifactory/api/gpg/key/public | sudo apt-key add -

3. **Configure the Eclipse Adoptium Repository**: You'll need to add the Eclipse Adoptium repository to your system:

   echo "deb https://packages.adoptium.net/artifactory/deb $(awk -F= '/^VERSION_CODENAME/{print$2}' /etc/os-release) main" | sudo tee /etc/apt/sources.list.d/adoptium.list

4. **Install Eclipse Temurin JDK 11**: Update your package list and install the JDK:

   sudo apt-get update
   sudo apt-get install temurin-11-jdk

Please note that the last command in the quoted instructions installs JDK 17, but to install JDK 11, you should replace `temurin-17-jdk` with `temurin-11-jdk`.

After installation, you can verify the installation by checking the version of the JDK:

java -version

## import riscv-none-elf-as 失敗
首先要找到該檔案的路徑，並往前推一層才會import成功( You should add the directory to the PATH, not the binary itself)

//location:/home/mio93001/riscv-none-elf-gcc/bin/riscv-none-elf-as
correct path: /home/mio93001/riscv-none-elf-gcc/bin

## 有時候terminal會怪怪的，重開就好了
ex:明明就有permission卻一直說denied
# 單字
- DSL:domain specific language
- rigorous:嚴格的
- prone:易於
- omit:忽略
-

# 語法
- 退一層資料夾: cd ..
- 找檔案位置:

似乎只要把 address 跟data.expect給他就能測試了

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