Formato Instrucciones SISA Funcionalidades ALU
Banco de Registros
UPG ALU
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
Name Mnemonic
0
0
0
0
a
a
a
b
b
b
d
d
d
f
f
f
Logic and Aritmetic
Operations
AND, OR, XOR, NOT,
ADD, SUB, SHA, SHL
0
0
0
1
a
a
a
b
b
b
d
d
d
f
f
f
Compare Signed and
Unsigned
CMPLT, CMPLE, -,CMPEQ,
CMPLTU, CMPLEU, -, -
0
0
1
0
a
a
a
d
d
d
n
n
n
n
n
n
Add Immediate
ADDI
0
0
1
1
a
a
a
d
d
d
n
n
n
n
n
n
Load
LD
0
1
0
0
a
a
a
b
b
b
n
n
n
n
n
n
Store
ST
0
1
0
1
a
a
a
d
d
d
n
n
n
n
n
n
Load Byte
LDB
0
1
1
0
a
a
a
b
b
b
n
n
n
n
n
n
Store Byte
STB
0
1
1
1
a
a
a
d
d
d
x
x
x
x
x
x
Jump and link register
JALR
1
0
0
0
a
a
a
0
n
n
n
n
n
n
n
n
Branch on Zero
BZ
1
Branch on Not Zero
BNZ
1
0
0
1
d
d
d
0
n
n
n
n
n
n
n
n
Move Immediate
MOVI
a
a
a
1
Move Immediate High
MOVHI
d
d
d
1
0
1
0
d
d
d
0
n
n
n
n
n
n
n
n
Input
IN
a
a
a
1
Output
OUT
1
0
1
1
Future extensions
1
1
x
x
F
OP
b
2
b
1
b
0
11 10 01 00
0
0
0
--- X CMPLT (X,Y) AND(X,Y)
0
0
1
--- Y CMPLE (X,Y) OR(X,Y)
0
1
0
--- MOVHI (X,Y)
--- XOR(X,Y)
0
1
1
--- X&(!1) CMPEQ (X,Y) NOT(X)
1
0
0
--- --- CMPLTU (X,Y)
ADD(X,Y)
1
0
1
--- --- CMPLEU (X,Y)
SUB(X,Y)
1
1
0
--- --- --- SHA(X,Y)
1
1
1
--- --- --- SHL(X,Y)
RD-IN
WR-OUT
In/Alu
WrD
Clk
Rb/N
MUX
01
MUX
01
3
@A 3@B
3@D
N
XY
ALU zOP
F
3
Fz2
OP
REGFILE
D
A
@B
B
@D
@A
WrD
X Y
W
0123
0
1MUX
z
z
X Y
CMP
FX Y
AL
F
3
F
2
OP b0
b1
X Y
MISC
F
D
b0
b1
b2
WrD
Ld
REG
Ld
REG
Ld
REG
Ld
REG
Ld
REG
Ld
REG
Ld
REG
2
01234567
0
1MUX
2
2
01234567
0
1MUX
2
b0
b1
b2
b0
b1
b2
A B
Clk
Ld
REG
3
@D
3
@A
3
@B
0
0
1
e
3
2
1
2
4
5
6
7
Dec
R1
R2
R3
R4
R5
R6
R7
R0