D:80H P0
D:81H SP
D:82H DPL
D:83H DPH
D:87H PCON
D:88H TCON
D:89H TMOD
D:8AH TL0
D:8BH TL1
D:8CH TH0
D:8DH TH1
D:90H P1
D:98H SCON
D:99H SBUF

D:A0H P2
D:A8H IE
D:A9H IP
D:B0H P3

D:C0H IRCON
D:C8H T2CON
D:CCH TL2
D:CDH TH2

D:D0H PSW
D:E0H ACC
D:F0H B

B:80H.0  P0.0
B:80H.1  P0.1
B:80H.2  P0.2
B:80H.3  P0.3
B:80H.4  P0.4
B:80H.5  P0.5
B:80H.6  P0.6
B:80H.7  P0.7

B:88H.0 IT0
B:88H.1 IE0
B:88H.2 IT1
B:88H.3 IE1
B:88H.4 TR0
B:88H.5 TF0
B:88H.6 TR1
B:88H.7 TF1

B:90H.0 P1.0
B:90H.1 P1.1
B:90H.2 P1.2
B:90H.3 P1.3
B:90H.4 P1.4
B:90H.5 P1.5
B:90H.6 P1.6
B:90H.7 P1.7

B:98H.0 RI
B:98H.1 TI
B:98H.2 RB8
B:98H.3 TB8
B:98H.4 REN
B:98H.5 SM2
B:98H.6 SM1
B:98H.7 SM0

B:A0H.0 P2.0
B:A0H.1 P2.1
B:A0H.2 P2.2
B:A0H.3 P2.3
B:A0H.4 P2.4
B:A0H.5 P2.5
B:A0H.6 P2.6
B:A0H.7 P2.7

B:A8H.0 EX0
B:A8H.1 ET0
B:A8H.2 EX1
B:A8H.3 ET1
B:A8H.4 ES
B:A8H.7 EA

B:B0H.0 P3.0
B:B0H.1 P3.1
B:B0H.2 P3.2
B:B0H.3 P3.3
B:B0H.4 P3.4
B:B0H.5 P3.5
B:B0H.6 P3.6
B:B0H.7 P3.7

B:D0H.0 P
B:D0H.1 F1
B:D0H.2 OV
B:D0H.3 RS0
B:D0H.4 RS1
B:D0H.5 F0
B:D0H.6 AC
B:D0H.7 CY

B:E0H.0 ACC.0
B:E0H.1 ACC.1
B:E0H.2 ACC.2
B:E0H.3 ACC.3
B:E0H.4 ACC.4
B:E0H.5 ACC.5
B:E0H.6 ACC.6
B:E0H.7 ACC.7

B:F0H.0 B.0
B:F0H.1 B.1
B:F0H.2 B.2
B:F0H.3 B.3
B:F0H.4 B.4
B:F0H.5 B.5
B:F0H.6 B.6
B:F0H.7 B.7