mod652

主要是8051源代码

;      REV.  1.0     MAY 23, 1988
P0     DATA  080H   ;PORT 0
SP     DATA  081H   ;STACK POINTER
DPL    DATA  082H   ;DATA POINTER - LOW BYTE
DPH    DATA  083H   ;DATA POINTER - HIGH BYTE
PCON   DATA  087H   ;POWER CONTROL
TCON   DATA  088H   ;TIMER CONTROL
TMOD   DATA  089H   ;TIMER MODE
TL0    DATA  08AH   ;TIMER 0 - LOW BYTE
TL1    DATA  08BH   ;TIMER 1 - LOW BYTE
TH0    DATA  08CH   ;TIMER 0 - HIGH BYTE
TH1    DATA  08DH   ;TIMER 1 - HIGH BYTE
P1     DATA  090H   ;PORT 1
S0CON  DATA  098H   ;SERIAL PORT 0 CONTROL
S0BUF  DATA  099H   ;SERIAL PORT 0 BUFFER
P2     DATA  0A0H   ;PORT 2
IE     DATA  0A8H   ;INTERRUPT ENABLE
P3     DATA  0B0H   ;PORT 3
IP     DATA  0B8H   ;INTERRUPT ENABLE
PSW    DATA  0D0H   ;PROGRAM STATUS WORD
S1CON  DATA  0D8H   ;SERIAL PORT 1 CONTROL
S1STA  DATA  0D9H   ;SERIAL PORT 1 STATUS
S1DAT  DATA  0DAH   ;SERIAL 1 DATA
S1ADR  DATA  0DBH   ;SERIAL 1 SLAVE ADDRESS
ACC    DATA  0E0H   ;ACCUMULATOR
B      DATA  0F0H   ;MULTIPLICATION REGISTER
IT0    BIT   088H   ;TCON.0 - EXT. INTERRUPT 0 TYPE
IE0    BIT   089H   ;TCON.1 - EXT. INTERRUPT 0 EDGE FLAG
IT1    BIT   08AH   ;TCON.2 - EXT. INTERRUPT 1 TYPE
IE1    BIT   08BH   ;TCON.3 - EXT. INTERRUPT 1 EDGE FLAG
TR0    BIT   08CH   ;TCON.4 - TIMER 0 ON/OFF CONTROL
TF0    BIT   08DH   ;TCON.5 - TIMER 0 OVERFLOW FLAG
TR1    BIT   08EH   ;TCON.6 - TIMER 1 ON/OFF CONTROL
TF1    BIT   08FH   ;TCON.7 - TIMER 1 OVERFLOW FLAG
RI     BIT   098H   ;SCON.0 - RECEIVE INTERRUPT FLAG
TI     BIT   099H   ;SCON.1 - TRANSMIT INTERRUPT FLAG
RB8    BIT   09AH   ;SCON.2 - RECEIVE BIT 8
TB8    BIT   09BH   ;SCON.3 - TRANSMIT BIT 8
REN    BIT   09CH   ;SCON.4 - RECEIVE ENABLE
SM2    BIT   09DH   ;SCON.5 - SERIAL MODE CONTROL BIT 2
SM1    BIT   09EH   ;SCON.6 - SERIAL MODE CONTROL BIT 1
SM0    BIT   09FH   ;SCON.7 - SERIAL MODE CONTROL BIT 0
EX0    BIT   0A8H   ;IE.0 - EXTERNAL INTERRUPT 0 ENABLE
ET0    BIT   0A9H   ;IE.1 - TIMER 0 INTERRUPT ENABLE
EX1    BIT   0AAH   ;IE.2 - EXTERNAL INTERRUPT 1 ENABLE
ET1    BIT   0ABH   ;IE.3 - TIMER 1 INTERRUPT ENABLE
ES0    BIT   0ACH   ;IE.4 - SERIAL PORT 0 INTERRUPT ENABLE
ES1    BIT   0ADH   ;IE.5 - SERIAL PORT 1 INTERRUPT ENABLE
EA     BIT   0AFH   ;IE.7 - SERIAL PORT 1 INTERRUPT ENABLE
RXD    BIT   0B0H   ;P3.0 - SERIAL PORT RECEIVE INPUT
TXD    BIT   0B1H   ;P3.1 - SERIAL PORT TRANSMIT OUTPUT
INT0   BIT   0B2H   ;P3.2 - EXTERNAL INTERRUPT 0 INPUT
INT1   BIT   0B3H   ;P3.3 - EXTERNAL INTERRUPT 1 INPUT
T0     BIT   0B4H   ;P3.4 - TIMER 0 COUNT INPUT
T1     BIT   0B5H   ;P3.5 - TIMER 1 COUNT INPUT
WR     BIT   0B6H   ;P3.6 - WRITE CONTROL FOR EXT. MEMORY
RD     BIT   0B7H   ;P3.7 - READ CONTROL FOR EXT. MEMORY
PX0    BIT   0B8H   ;IP.0 - EXTERNAL INTERRUPT 0 PRIORITY
PT0    BIT   0B9H   ;IP.1 - TIMER 0 PRIORITY
PX1    BIT   0BAH   ;IP.2 - EXTERNAL INTERRUPT 1 PRIORITY
PT1    BIT   0BBH   ;IP.3 - TIMER 1 PRIORITY
PS0    BIT   0BCH   ;IP.4 - SERIAL PORT PRIORITY
PS1    BIT   0BDH   ;IP.5 - SERIAL PORT PRIORITY
P      BIT   0D0H   ;PSW.0 - ACCUMULATOR PARITY FLAG
OV     BIT   0D2H   ;PSW.2 - OVERFLOW FLAG
RS0    BIT   0D3H   ;PSW.3 - REGISTER BANK SELECT 0
RS1    BIT   0D4H   ;PSW.4 - REGISTER BANK SELECT 1
F0     BIT   0D5H   ;PSW.5 - FLAG 0
AC     BIT   0D6H   ;PSW.6 - AUXILIARY CARRY FLAG
CY     BIT   0D7H   ;PSW.7 - CARRY FLAG
CR0    BIT   0D8H   ;S1CON.0 - CLOCK RATE 0
CR1    BIT   0D9H   ;S1CON.1 - CLOCK RATE 1
AA     BIT   0DAH   ;S1CON.2 - ASSERT ACKNOWLEDGE
SI     BIT   0DBH   ;S1CON.3 - SI01 INTERRUPT BIT
ST0    BIT   0DCH   ;S1CON.4 - STOP FLAG
STA    BIT   0DDH   ;S1CON.5 - START FLAG
ENS1   BIT   0DEH   ;S1CON.6 - ENABLE SI01