Skip to content

Latest commit

 

History

History
45 lines (42 loc) · 1.61 KB

control_table.md

File metadata and controls

45 lines (42 loc) · 1.61 KB
Raw

Control logic tables

ALU:

alu_op Inst Opcode f3 f7
0000 ADD 0110011/0010011 000 0000000
0001 SLL 0110011/0010011 001 0000000
0010 SLT* 0110011/0010011 010 0000000
0011 SLTU 0110011/0010011 011 0000000
0100 XOR 0110011/0010011 100 0000000
0101 SRL 0110011/0010011 101 0000000
0110 OR 0110011/0010011 110 0000000
0111 AND 0110011/0010011 111 0000000
1000 SUB 0110011 000 0100000
1001 UNUSED - - -
1010 UNUSED - - -
1011 UNUSED - - -
1100 UNUSED - - -
1101 SRA 0110011/0010011 101 0100000
1110 UNUSED - - -
1111 UNUSED - - -

Branch Controller:

branch_ctrl Inst Opcode f3 f7
000 BEQ 1100011 000 N/A
001 BNE 1100011 001 N/A
011 UNUSED - - -
100 BLT* 1100011 100 N/A
110 BLTU 1100011 110 N/A
101 BGE* 1100011 101 N/A
111 BGEU 1100011 111 N/A

Control Signals:

reg_wr mem_rd mem_wr alu_s1 alu_s2 wb_ctrl Operation Opcode alu_op
1 0 0 1 1 01 R-type 0110011 alu_op
1 0 0 1 0 01 IR-Type 0010011 alu_op
1 1 0 1 0 00 IL-Type 0000011 0000
0 0 1 1 0 XX/00/01 S-Type 0100011 0000
0 0 0 0 0 XX/00/01 Branch-type 1100011 XXXX
1 0 0 1 0 01 LUI 0110111 0000
1 0 0 0 0 01 AUIPC 0010111 0000
1 0 0 0 0 10 JAL 1101111 0000
1 0 0 1 0 10 JALR 1100111 0000