mod512

主要是8051源代码

;     REV.     1.0     FEB 15, 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
SCON  DATA  098H    ;Serial Port Control
SBUF  DATA  099H    ;Serial Port Buffer
P2    DATA  0A0H    ;Port 2
IE    DATA  0A8H    ;Interrupt Enable Register 0
P3    DATA  0B0H    ;Port 3
IP    DATA  0B8H    ;Interrupt Enable Register 1
IRCON DATA  0C0H    ;Interrupt Request Control
PSW   DATA  0D0H    ;Program Status Word
ADCON DATA  0D8H    ;A/D Converter Control
ADDAT DATA  0D9H    ;A/D Converter Data
DAPR  DATA  0DAH    ;D/A Converter Program Register
P6    DATA  0DBH    ;Port 6
ACC   DATA  0E0H    ;Accumulator
P4    DATA  0E8H    ;Port 4
B     DATA  0F0H    ;Multiplication Register
P5    DATA  0F8H    ;Port 5
IT0   BIT   088H    ;TCON.0 - External Interrupt 0 Type
IE0   BIT   089H    ;TCON.1 - External Interrupt 0 Edge Flag
IT1   BIT   08AH    ;TCON.2 - External Interrupt 1 Type
IE1   BIT   08BH    ;TCON.3 - External 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
ES    BIT   0ACH    ;IE.4 - Serial Port Interrupt Enable
EA    BIT   0AFH    ;IE.7 - Global 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 External Memory
RD    BIT   0B7H    ;P3.7 - Read Control for External 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
PS    BIT   0BCH    ;IP.4 - Serial Port Priority
IADC  BIT   0C0H    ;IRCON.0 - A/D Converter Interrupt Request
P     BIT   0D0H    ;PSW.0 - Accumulator Parity Flag
F1    BIT   0D1H    ;PSW.1 - Flag 1
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
MX0   BIT   0D8H    ;ADCON.0 - Analog Input Channel Select Bit 0
MX1   BIT   0D9H    ;ADCON.1 - Analog Input Channel Select Bit 1
MX2   BIT   0DAH    ;ADCON.2 - Analog Input Channel Select Bit 2
ADM   BIT   0DBH    ;ADCON.3 - A/D Conversion Mode
BSY   BIT   0DCH    ;ADCON.4 - Busy Flag
CLK   BIT   0DEH    ;ADCON.6 - System Clock Enable
BD    BIT   0DFH    ;ADCON.7 - Baud Rate Enable