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Simple Computer

passing state-of-the-art

This is the design and implementation of a simple computer by using quartus II 9.0 and Cyclone II EP2C8T144C8.

Registers

Symbol Bits Name Function
MAR 8 Address Storage Register Store address of intructions
MBR 8 Digits Storage Register Store the digits of address in RAM
A 8 Register A A register
B 8 Register B B register
R 8 Register R R register
PC 8 Program Counter Store address
IR 8 Instructions Register Store the intruction opcode
T 8 Timing Counter Generate Timing Signals

General Overview

General Overview

Instructions

Opcode Mnemonic QI Function
0000 0000 LDA ADDR q1 Put the content of address ADDR into A
0000 0001 STA ADDR q2 Put A into the content of address ADDR
0000 0010 ADD A, B q3 Add A and B, and then put into A
0000 0011 SUB A, B q4 A substract B, and then put into A
0000 0100 ADD A, B q5 Logic process A&&B, and then put into A
0000 0101 OR A, B q6 Logic process AorB, and then put into A
0000 0110 MOV, A, R q7 Put the content of R into A
0000 0111 MOC A, R q8 Put the content of R into B
0000 1000 LDI A, OPRD q9 Put the oprands into A
0000 1001 LDC B, OPRD q10 Put the oprands into B

Test Repo

Address Content Description
0000 0000 0000 0110 Put the content of R into A
0000 0001 0000 1001 Put the oprands of the following address into B
0000 0010 0000 1110 oprands -- 0000 1110
0000 0011 0000 0010 add A and B, then put into A
0000 0100 0000 0111 Put the content of R into B
0000 0101 0000 1000 Put the oprands of the following address into A
0000 0110 0011 1111 oprands -- 0011 1111
0000 0111 0000 0011 A substract B and then put into A
0000 1000 0000 1000 Put the oprands of the following address into A
0000 1001 0000 1010 oprands -- 0000 1010
0000 1010 0000 1001 Put hte oprands of the following address into B
0000 1011 0000 0011 oprand -- 0000 0011
0000 1100 0000 0100 logic process A&&B, and then put into A
0000 1101 0000 1001 Put the oprand of the following addresss into B
0000 1110 0000 0101 oprand -- 0000 1001
0000 1111 0000 0101 logic process AorB, and then put into A

Expected Results:

a). 00010101        
b). 00010001       
c). 00111111                 
d). 00101010                     
e). 00001010                
f). 00000010                
g). 00000111

More information and details can be seen at our report