NUAA_Single_Cycle_Processor

南京航空航天大学计算机组成原理实验——单周期CPU设计

指令编码与控制信号清单

指令 OP码 func域

1. R型

指令	add	addu	sub	subu	and	or
func域	100000	100001	100010	100011	100100	100101

指令	nor	xor	slt	sltu	sll	srl
func域	100111	100110	101010	101011	000000	000010

指令	sra	sllv	srlv	srav	jr	jalr
func域	000011	000100	000110	000110	001000	001001

注：R型指令OP均为 000000

2. I型

指令	addi	addiu	ori	beq	lw	sw
OP域	001000	001001	001101	000100	100011	101011

指令	slti	lui	sb	lb	lbu	bne
OP域	001010	001111	101000	100000	100100	000101

指令	bgtz	blez	sltiu	xori	andi
OP域	000111	000110	001011	001110	001100

3. J型

指令	J	Jal
OP域	000010	000010

指令控制信号

1. R型指令控制信号表

控制信号	add	addu	sub	subu	and	or
Branch	0	0	0	0	0	0
Jump	0	0	0	0	0	0
RegDst	1	1	1	1	1	1
AluSrc	0	0	0	0	0	0
AlUCtr	00000	00001	00010	00011	00100	00101
MemToReg	0	0	0	0	0	0
RegWr	1	1	1	1	1	1
MemWr	0	0	0	0	0	0
ExtOp	X	X	X	X	X	X
Rtype	1	1	1	1	1	1
Jal	0	0	0	0	0	0
Rtype_J	0	0	0	0	0	0
Rtype_L	0	0	0	0	0	0
Wrbyte	0	0	0	0	0	0
Loadbyte	00	00	00	00	00	00

控制信号	nor	xor	slt	sltu	sll	srl
Branch	0	0	0	0	0	0
Jump	0	0	0	0	0	0
RegDst	1	1	1	1	1	1
AluSrc	0	0	0	0	0	0
AlUCtr	01110	00110	01100	01101	01000	01001
MemToReg	0	0	0	0	0	0
RegWr	1	1	1	1	1	1
MemWr	0	0	0	0	0	0
ExtOp	X	X	X	X	X	X
Rtype	1	1	1	1	1	1
Jal	0	0	0	0	0	0
Rtype_J	0	0	0	0	0	0
Rtype_L	0	0	0	0	0	0
Wrbyte	0	0	0	0	0	0
Loadbyte	00	00	00	00	00	00

控制信号	sra	sllv	srlv	srav	jr	jalr
Branch	0	0	0	0	0	0
Jump	0	0	0	0	0	0
RegDst	1	1	1	1	0	1
AluSrc	0	0	0	0	0	0
AlUCtr	01011	01111	10000	10010	11111	11111
MemToReg	0	0	0	0	X	0
RegWr	1	1	1	1	0	1
MemWr	0	0	0	0	0	0
ExtOp	X	X	X	X	X	X
Rtype	1	1	1	1	1	1
Jal	0	0	0	0	0	0
Rtype_J	0	0	0	0	1	1
Rtype_L	0	0	0	0	0	1
Wrbyte	0	0	0	0	0	0
Loadbyte	00	00	00	00	00	00

2. I型指令控制信号表

控制信号	addi	addiu	ori	beq	lw	sw
Branch	0	0	0	1	0	0
Jump	0	0	0	0	0	0
RegDst	0	0	0	X	0	X
AluSrc	1	1	1	0	1	1
AlUCtr	00000	00001	00101	00010	00001	00001
MemToReg	0	0	0	X	1	X
RegWr	1	1	1	0	1	0
MemWr	0	0	0	0	0	1
ExtOp	1	1	0	X	1	1
Rtype	0	0	0	0	0	0
Jal	0	0	0	0	0	0
Rtype_J	0	0	0	0	0	0
Rtype_L	0	0	0	0	0	0
Wrbyte	0	0	0	0	0	0
Loadbyte	00	00	00	00	00	00

控制信号	slti	bgez	lui	sb	lb	lbu
Branch	0	1	0	0	0	0
Jump	0	0	0	0	0	0
RegDst	0	X	0	0	0	0
AluSrc	1	0	0	1	1	1
AlUCtr	01100	11111	11110	00001	00001	00001
MemToReg	0	X	0	0	1	1
RegWr	1	0	1	0	1	1
MemWr	0	0	0	1	0	0
ExtOp	1	X	10	1	1	1
Rtype	0	0	0	0	0	0
Jal	0	0	0	0	0	0
Rtype_J	0	0	0	0	0	0
Rtype_L	0	0	0	0	0	0
Wrbyte	0	0	0	1	0	0
Loadbyte	00	00	00	00	11	10

控制信号	bne	bgtz	blez	sltiu	xori	andi
Branch	1	1	1	0	0	0
Jump	0	0	0	0	0	0
RegDst	0	0	0	0	0	0
AluSrc	1	1	1	1	1	1
AlUCtr	00010	11111	11111	01101	00110	00100
MemToReg	X	X	X	0	0	0
RegWr	0	0	0	1	1	1
MemWr	0	0	0	0	0	0
ExtOp	X	X	X	1	0	0
Rtype	0	0	0	0	0	0
Jal	0	0	0	0	0	0
Rtype_J	0	0	0	0	0	0
Rtype_L	0	0	0	0	0	0
Wrbyte	0	0	0	0	0	0
Loadbyte	00	00	00	00	00	00

3. J型指令控制信号表

控制信号	j	jal
Branch	0	0
Jump	1	1
RegDst	X	X
AluSrc	X	X
AlUCtr	XXXXX	XXXXX
MemToReg	X	X
RegWr	0	0
MemWr	0	0
ExtOp	X	X
Rtype	X	X
Jal	0	1
Rtype_J	0	0
Rtype_L	0	0
Wrbyte	0	0
Loadbyte	00	00

36条指令CPU数据通路与控制信号简图

测试代码(基本要求)

代码指令

addiu   $1,     $0,     1           
sll     $2,     $1,     4           
addu    $3,     $2,     $1          
srl     $4,     $2,     2           
slti    $25,    $4,     5           
bgez    $25,    16          
subu    $5,     $3,     $4          
sw      $5,     20($0)          
nor     $6,     $5,     $2          
or      $7,     $6,     $3          
xor     $8,     $7,     $6          
sw      $8,     28($0)          
beq     $8,     $3,     2           
slt     $9,     $6,     $7          
addiu   $1,     $0,     8           
lw      $10,    20($1)          
bne     $10,    $5,     4           
and     $11,    $2,     $1          
sw      $11,    28($1)          
sw      $4,     16($1)          
jal     25          
lui     $12,    12          
srav    $26,    $12,    $2          
sllv    $27,    $26,    $1          
jalr    $27         
sb      $26,    5($3)           
sltu    $13,    $3,     $3          
bgtz    $13,    3           
sllv    $14,    $6,     $4          
sra     $15,    $14,    2           
srlv    $16,    $15,    $1          
blez    $16,    8           
srav    $16,    $15, $1             
addiu   $11,    $0,     140             
bltz    $16,    6           
lw      $28,    3($10)          
bne     $28,    $29,    7          
sb      $15,    8($5)           
lb      $18,    8($5)           
lbu     $19,    8($5)           
sltiu   $24,    $15,    0xFFFF          
or      $29,    $12,    $5          
jr      $11                 
andi    $20,    $15,    0xFFFF          
ori     $21,    $15,    0xFFFF          
xori    $22,    $15,    0xFFFF          
j       00H                                 

对应指令字

0010_0100_0000_0001_0000_0000_0000_0001 //  addiu   $1,     $0,     1           
0000_0000_0000_0001_0001_0001_0000_0000 //  sll     $2,     $1,     4           
0000_0000_0100_0001_0001_1000_0010_0001 //  addu    $3,     $2,     $1          
0000_0000_0000_0010_0010_0000_1000_0010 //  srl     $4,     $2,     2           
0010_1000_1001_1001_0000_0000_0000_0101 //  slti    $25,    $4,     5           
0000_0111_0010_0001_0000_0000_0001_0000 //  bgez    $25,    16          
0000_0000_0110_0100_0010_1000_0010_0011 //  subu    $5,     $3,     $4          
1010_1100_0000_0101_0000_0000_0001_0100 //  sw      $5,     20($0)          
0000_0000_1010_0010_0011_0000_0010_0111 //  nor     $6,     $5,     $2          
0000_0000_1100_0011_0011_1000_0010_0101 //  or      $7,     $6,     $3          
0000_0000_1110_0110_0100_0000_0010_0110 //  xor     $8,     $7,     $6          
1010_1100_0000_1000_0000_0000_0001_1100 //  sw      $8,     28($0)          
0001_0001_0000_0011_0000_0000_0000_0010 //  beq     $8,     $3,     2           
0000_0000_1100_0111_0100_1000_0010_1010 //  slt     $9,     $6,     $7          
0010_0100_0000_0001_0000_0000_0000_1000 //  addiu   $1,     $0,     8           
1000_1100_0010_1010_0000_0000_0001_0100 //  lw      $10,    20($1)          
0001_0101_0100_0101_0000_0000_0000_0100 //  bne     $10,    $5,     4           
0000_0000_0100_0001_0101_1000_0010_0100 //  and     $11,    $2,     $1          
1010_1100_0010_1011_0000_0000_0001_1100 //  sw      $11,    28($1)          
1010_1100_0010_0100_0000_0000_0001_0000 //  sw      $4,     16($1)          
0000_1100_0000_0000_0000_0000_0001_1001 //  jal     25          
0011_1100_0000_1100_0000_0000_0000_1100 //  lui     $12,    12          
0000_0000_0100_1100_1101_0000_0000_0111 //  srav    $26,    $12,    $2          
0000_0000_0011_1010_1101_1000_0000_0100 //  sllv    $27,    $26,    $1          
0000_0011_0110_0000_1111_1000_0000_1001 //  jalr    $27         
1010_0000_0111_1010_0000_0000_0000_0101 //  sb      $26,    5($3)           
0000_0000_0110_0011_0110_1000_0010_1011 //  sltu    $13,    $3,     $3          
0001_1101_1010_0000_0000_0000_0000_0011 //  bgtz    $13,    3           
0000_0000_1000_0110_0111_0000_0000_0100 //  sllv    $14,    $6,     $4          
0000_0000_0000_1110_0111_1000_1000_0011 //  sra     $15,    $14,    2           
0000_0000_0010_1111_1000_0000_0000_0110 //  srlv    $16,    $15,    $1          
0001_1010_0000_0000_0000_0000_0000_1000 //  blez    $16,    8           
0000_0000_0010_1111_1000_0000_0000_0111 //  srav    $16,    $15, $1             
0010_0100_0000_1011_0000_0000_1000_1100 //  addiu   $11,    $0,     140             
0000_0110_0000_0000_0000_0000_0000_0110 //  bltz    $16,    6           
1000_1101_0101_1100_0000_0000_0000_0011 //  lw      $28,    3($10)          
0001_0111_1001_1101_0000_0000_0000_0111 //  bne     $28,    $29,    7          
1010_0000_1010_1111_0000_0000_0000_1000 //  sb      $15,    8($5)           
1000_0000_1011_0010_0000_0000_0000_1000 //  lb      $18,    8($5)           
1001_0000_1011_0011_0000_0000_0000_1000 //  lbu     $19,    8($5)           
0010_1101_1111_1000_1111_1111_1111_1111 //  sltiu   $24,    $15,    0xFFFF          
0000_0001_1000_0101_1110_1000_0010_0101 //  or      $29,    $12,    $5          
0000_0001_0110_0000_0000_0000_0000_1000 //  jr      $11                 
0011_0001_1111_0100_1111_1111_1111_1111 //  andi    $20,    $15,    0xFFFF          
0011_0101_1111_0101_1111_1111_1111_1111 //  ori     $21,    $15,    0xFFFF          
0011_1001_1111_0110_1111_1111_1111_1111 //  xori    $22,    $15,    0xFFFF          
0000_1000_0000_0000_0000_0000_0000_0000 //  j       00H