This processor has three types of instructions:
- R-Type: This is the register type instructions that has this formation:
| Opcode |
Destination Register ID |
Source1 Register ID |
Source2 Register ID |
| 4 bit |
4 bit |
4 bit |
4 bit |
- I-Type: This is the immedaite type instructions that has this formation:
| Opcode |
Destination Register ID |
Source Register ID |
Immedaite Value |
| 4 bit |
4 bit |
4 bit |
8 bit |
- J-Type: This is the immedaite type instructions that has this formation:
| Opcode |
Zero Const |
Memory Address (Immediate) |
| 4 bit |
0000 |
8 bit |
| Instruction Assembly |
Instruction Formation |
Instruction Type |
add |
0000-DR-SR1-SR2 |
R-Type |
addi |
1000-DR-SR-Immediate |
I-Type |
sub |
0001-DR-SR1-SR2 |
R-Type |
and |
0010-DR-SR1-SR2 |
J-Type |
andi |
1010-DR-SR-Immediate |
I-Type |
or |
0011-DR-SR1-SR2 |
J-Type |
ori |
1011-DR-SR-Immediate |
I-Type |
xor |
0100-DR-SR1-SR2 |
R-Type |
not |
0101-DR-SR1-SR2 |
R-Type |
mul |
0110-DR-SR1-SR2 |
R-Type |
jmp |
0111-0000-MemoryAddress(Immediate) |
J-Type |
brnz |
1111-0000-MemoryAddress(Immediate) |
J-Type |
store |
1101-SR-MemoryAddress(Immediate) |
I-Type |
load |
1110-DR-MemoryAddress(Immediate) |
I-Type |
srl |
1001-DR-SR-Immediate |
I-Type |
sll |
1100-DR-SR-Immediate |
I-Type |