COMP1036 Custom Library System Autumn 2024Processing

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Java Python 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- COMP1036 Custom Library System Autumn 2024Processing 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.