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School of Computer Science
Computer Fundamentals (COMP1036)
Autumn 2024
Custom Library System
Deadline: 17:00 Friday 15th of November, 2024
Description
You have used combinatorial logic to construct various logic circuits that form the basis of a computer in previous exercises. In this exercise, you will implement a library system with some simple functionalities. Additionally, you will incorporate arithmetic operations into your design. The inputs and outputs of the library system can be found in Figure 1.
Figure 1: Library System
1 Load Data to Registers
Turn on Load (load = 1) to start loading inBookID, inBookNum, and in- BookPri into the Library System’s registers, respectively.
Input:
1. A 16-Bit version of a book ID number called inBookID.
2. A 16-Bit version of a book quantity called inBookNum.
3. A 16-Bit version of a book price called inBookPri.
4. A 1-Bit switch for loading the data called load.
Turn on the load (load = 1), then input inBookID, inBookNum, and in- BookPri, which should be stored in the registers, respectively.
Output:
1. A 16-Bit version of a book ID number called outBookID.
2. A 16-Bit version of a book quantity called outBookNum.
3. A 16-Bit version of a book price called outBookPri.
4. A 16-Bit version of total book value called outTotalVal.
Figure 2: Load data to register.
(6 marks)
2 Store Data to RAM
Based on Task 1, turn on the store (store = 1) with the assigned address; the data should be stored in the RAMs, respectively.
Input:
1. A 1-Bit switch for storing the data called store.
2. A 3-Bit value assigned to address that stores each value in RAM.
Turn on the store (store = 1) and turn off load (load = 0) with the assigned address; inBookID, inBookNum, and inBookPri should be stored in the RAMs. Meanwhile, outBookID, outBookNum, and outBookPri will display the stored data, and the default value of outTotalVal is 0. For example, after loading the above input into the register, you should set store = 1 and address = 2. The input data will be stored in the RAMs, with outBookID = 10003, outBookNum = 2, outBookPri = 99, and outTotalVal = 0. Figures 3 and 4 illustrate the loading of data to the register and RAM, respectively.
Output: Book information is based on the assigned address of RAM.
1. A 16-Bit version of a book ID number called outBookID.
2. A 16-Bit version of a book quantity called outBookNum.
3. A 16-Bit version of a book price called outBookPri.
4. A 16-Bit version of total book value called outTotalVal.
(6 marks)
Figure 3: Load data to register.
Figure 4: Store data to RAM with assigned address 2 and display the stored data in output pins.
3 Store inBookNum × inBookPri to RAM
Based on Task 2, inBookNum × inBookPri should be calculated and stored in the RAM as well.
Input:
1. A 16-Bit version of a book quantity called inBookNum.
2. A 16-Bit version of a book price called inBookPri.
For example, if we have the following input data:
1. 10001 3 29
2. 10002 5 19
3. 10003 2 99
Then the data stored in the RAM should be as follows:
1. 10001 3 29 87
2. 10002 5 19 95
3. 10003 2 99 198
(5 marks)
4 Sequential Load from RAM
Based on Task 3, implement sequential load functionality. The values of in- BookNum × inBookPri will be loaded from RAM according to the assigned address and stored to registers. load0-load7 are the switches that control loading data from addresses 0 to 7 of RAM to the registers, respectively.
Input:
1. A 3-Bit value assigned to address that stores each value in RAM.
2. A 1-Bit switch for loading data, called load0, from address 0 in RAM.
3. A 1-Bit switch for loading data, called load1, from address 1 in RAM.
4. A 1-Bit switch for loading data, called load2, from address 2 in RAM.
5. A 1-Bit switch for loading data, called load3, from address 3 in RAM.
6. A 1-Bit switch for loading data, called load4, from address 4 in RAM.
7. A 1-Bit switch for loading data, called load5, from address 5 in RAM.
8. A 1-Bit switch for loading data, called load6, from address 6 in RAM.
9. A 1-Bit switch for loading data, called load7, from address 7 in RAM.
For example, we have following data stored in the RAM:
1. 10001 3 29 87
2. 10002 5 19 95
3. 10003 2 99 198
In Figure 5, set load1 = 1 and address = 1. The value 95 will be loaded to a register from RAM; meanwhile, outBookID, outBookNum, outBookPri and outTotalVal will display 10002, 5, 19, and 95, respectively.
Output: Book information is based on the assigned address of RAM.
1. A 16-Bit version of a book ID number called outBookID.
2. A 16-Bit version of a book quantity called outBookNum.
3. A 16-Bit version of a book price called outBookPri.
4. A 16-Bit version of total book value called outTotalVal.
(8 marks)
Figure 5: Load data from RAM to register.
5 Sum of the inBookNum × inBookPri
Based on Task 4, calculate the total value of the books stored in RAM.
Input:
1. A 3-Bit value assigned to address that stores each value in RAM.
2. A 1-Bit switch for loading data, called load0, from address 0 in RAM.
3. A 1-Bit switch for loading data, called load1, from address 1 in RAM.
4. A 1-Bit switch for loading data, called load2, from address 2 in RAM.
5. A 1-Bit switch for loading data, called load3, from address 3 in RAM.
6. A 1-Bit switch for loading data, called load4, from address 4 in RAM.
7. A 1-Bit switch for loading data, called load5, from address 5 in RAM.
8. A 1-Bit switch for loading data, called load6, from address 6 in RAM.
9. A 1-Bit switch for loading data, called load7, from address 7 in RAM.
For example, we have following data stored in the RAM:
1. 10001 3 29 87
2. 10002 5 19 95
3. 10003 2 99 198
Retrieve data from RAMs sequentially, calculate 87 + 95 + 198 = 380 and outTotalVal will display the sum 380. Meanwhile, the most recently retrieved data (address = 2) will be displayed in outBookID = 10003, outBookNum = 2, and outBookPri = 99, respectively.
Output: Book information is based on the assigned address of RAM.
1. A 16-Bit version of a book ID number called outBookID.
2. A 16-Bit version of a book quantity called outBookNum.
3. A 16-Bit version of a book price called outBookPri.
4. A 16-Bit version of total book value called outTotalVal.
(5 marks)
Figure 6: Calculate total value.
Submission
You should zip all your files into one zip file to “Coursework1 Assignment” . You should name your file as: YOURSTUDENTID YOURNAME.zip. Your zip file should in- clude:
1. one master hdl file called CW.hdl file
2. all additional hdl files used by CW.hdl
3. one readme.txt file if needed (optional)
Submit your zip file onto the Moodle submission page. Please note that every next submission overwrites all the files in the previous one. If you submit several times, make sure that your last submission includes all the necessary files. Include all required chips, instructions for use, and any instruction text file if necessary. For late submission, the standard late submission policy applies,i.e. 5% mark deduction for every 24 hours.