Sw pc
Sw pc
PC → AR
PC+
SW → RAM
Sw → pc
PC → AR
PC+1
RAM → BUS
PC→AR
PC+1
00001
00000 11001 11100
→
00010
00001
WE 11010 RD 11101
01000
11001 11100
IN ADD STA OUT JMP AN 的
01001 01010 01110 01100 01101 01011
∽00001 00111 10001 10100
00011 10101
04 17 ∽
11111 10010
∽00001 10110
00100
∽
∽00001 10011 10111
00101
∽00001 11110
00110
∽00001
∽00001
助记符
机器指令码
说明
IN
001 0000 0(10)
INPUT DEVICE->R0
ADD [ADDR]
010 00000 (20)
R0+[ADDR]->R0
OUT [ADDR]
100 00000 (40)
[ADDR]->OUTPUT DEVICE
JMP [ADDR]
101 00000(50)
ADDR->PC
STA [ADDR]
110 00000 (60)
R0->[ADDR]
AND [ADDR]
011 00000 (70)
R0∧[ADDR]->R0
RAM→BUS
BUS→IR
P(1)
SW→R0
PC→AR
PC+1
PC→AR
PC+1
PC→AR
PC+1
PC→AR
PC+1
RAM→BUS
BUS→AR
RAM→BUS
BUS→AR
RAM→BUS
BUS→AR
RAM→BUS
BUS→PC
RAM→BUS
BUS→DR2
R0→BUS
BUS→RAM
RAM→BUS
BUS→DR1
R0→DR1
DR1→LED
(DR1)+(DR2)
→R0
PC→AR
PC+1
RAM→BUS
BUS→AR
RAM→BUS
BUS→DR2
R0→DR1
(DR1∧(DR2)
→R0