| Appendix C Predefined Symbols
DATA Addresses
P0 |  | 080H
SP |  | 081H
DPL |  | 082H
DPH |  | 083H
PCON |  | 087H
TCON |  | 088H
TMOD |  | 089H
TL0 |  | 08AH
TL1 |  | 08BH
TH0 |  | 08CH
TH1 |  | 08DH
P1 |  | 090H
SCON |  | 098H
SBUF |  | 099H
P2 |  | 0A0H
IE |  | 0A8H
P3 |  | 0B0H
IP |  | 0B8H
PSW |  | 0D0H
ACC |  | 0E0H
B |  | 0F0H
BIT Addresses
IT0 |  | 088H
IE0 |  | 089H
IT1 |  | 08AH
IE1 |  | 08BH
TR0 |  | 08CH
TF0 |  | 08DH
TR1 |  | 08EH
TF1 |  | 08FH
RI |  | 098H
TI |  | 099H
RB8 |  | 09AH
TB8 |  | 09BH
REN |  | 09CH
SM2 |  | 09DH
SM1 |  | 09EH
SM0 |  | 09FH
EX0 |  | 0A8H
ET0 |  | 0A9H
EX1 |  | 0AAH
ET1 |  | 0ABH
ES |  | 0ACH
EA |  | 0AFH
RXD |  | 0B0H
TXD |  | 0B1H
INT0 |  | 0B2H
INT1 |  | 0B3H
T0 |  | 0B4H
T1 |  | 0B5H
WR |  | 0B6H
RD |  | 0B7H
PX0 |  | 0B8H
PT0 |  | 0B9H
PX1 |  | 0BAH
PT1 |  | 0BBH
PS |  | 0BCH
P |  | 0D0H
OV |  | 0D2H
RS0 |  | 0D3H
RS1 |  | 0D4H
F0 |  | 0D5H
AC |  | 0D6H
CY |  | 0D7H
CODE Addresses
RESET |  | 0000H
EXTI0 |  | 0003H
TIMER0 |  | 000BH
EXTI1 |  | 0013H
TIMER1 |  | 001BH
SINT |  | 0023H
Plain Numbers
??ASEM_51 |  | 8051H
??VERSION |  | 0130H