LCD PAGE 1
1 ; Very basic demonstration example for HD44780 simulator
2 ; * Click on "Virtual HW" in the main menu,
3 ; * choose "Open",
4 ; * change filter to VH Component,
5 ; * open "LCD.vhc",
6 ; * press F2,
7 ; * press F6,
8 ; * enjoy ... :-)
9 ; * press F2 to end.
10 ;
11 ; Note: simulated delays are skipped in this example.
12 ;
13 org 0
0000 02001C 14 jmp start
15
00B0 16 RS bit P3.0
00B1 17 RW bit P3.1
00B2 18 E bit P3.2
0090 19 D equ P1
20
21 cmd macro cmd_code
22 setb E
23 mov D, cmd_code
24 clr E
25 endm
26
0003 57656C636F 27 string: db 'Welcome to MCU 8051 IDE!\0'
6D6520746F
204D435520
3830353120
4944452100
28
001C 759000 29 start: mov D, #0
001F C2B1 30 clr RW
0021 900003 31 mov DPTR, #string
32
0024 C2B0 33 main: clr RS
34 +1 cmd #00000001b ; Clear display
0026 D2B2 35 +1 setb e
0028 759001 36 +1 mov d , #00000001b
002B C2B2 37 +1 clr e
38 +1 cmd #00000010b ; Cursor home
002D D2B2 39 +1 setb e
002F 759002 40 +1 mov d , #00000010b
0032 C2B2 41 +1 clr e
42 +1 cmd #00000110b ; Entry mode set
0034 D2B2 43 +1 setb e
0036 759006 44 +1 mov d , #00000110b
0039 C2B2 45 +1 clr e
46 +1 cmd #00001111b ; Display ON/OFF control
003B D2B2 47 +1 setb e
003D 75900F 48 +1 mov d , #00001111b
0040 C2B2 49 +1 clr e
50 +1 cmd #00011110b ; Cursor/display shift
0042 D2B2 51 +1 setb e
0044 75901E 52 +1 mov d , #00011110b
0047 C2B2 53 +1 clr e
54 +1 cmd #00111100b ; Function set
0049 D2B2 55 +1 setb e
004B 75903C 56 +1 mov d , #00111100b
004E C2B2 57 +1 clr e
58 +1 cmd #10000001b ; Set DDRAM address
0050 D2B2 59 +1 setb e
0052 759081 60 +1 mov d , #10000001b
0055 C2B2 61 +1 clr e
62
63 ; Print the string ...
0057 D2B0 64 setb RS
0059 7800 65 mov R0, #0
005B E8 66 print: mov A, R0
005C 08 67 inc R0
005D 93 68 movc A, @A+DPTR
69 +1 cmd A
005E D2B2 70 +1 setb e
0060 F590 71 +1 mov d , A
0062 C2B2 72 +1 clr e
0064 B400F4 73 cjne A, #0, print
0067 80BB 74 sjmp main
75
76 end
ASSEMBLY COMPLETE, NO ERRORS FOUND, NO WARNINGS
SYMBOL TABLE:
??MCU_8051_IDE . . . . . . . . . . . N NUMB 8051H NOT USED
??VERSION. . . . . . . . . . . . . . N NUMB 0147H NOT USED
AC . . . . . . . . . . . . . . . . . B ADDR 00D6H NOT USED
ACC. . . . . . . . . . . . . . . . . D ADDR 00E0H NOT USED
ACSR . . . . . . . . . . . . . . . . D ADDR 0097H NOT USED
ADCF . . . . . . . . . . . . . . . . D ADDR 00F6H NOT USED
ADCLK. . . . . . . . . . . . . . . . D ADDR 00F2H NOT USED
ADCON. . . . . . . . . . . . . . . . D ADDR 00F3H NOT USED
ADDH . . . . . . . . . . . . . . . . D ADDR 00F5H NOT USED
ADDL . . . . . . . . . . . . . . . . D ADDR 00F4H NOT USED
AUXR . . . . . . . . . . . . . . . . D ADDR 008EH NOT USED
AUXR1. . . . . . . . . . . . . . . . D ADDR 00A2H NOT USED
B. . . . . . . . . . . . . . . . . . D ADDR 00F0H NOT USED
BDRCON . . . . . . . . . . . . . . . D ADDR 009BH NOT USED
BDRCON_1 . . . . . . . . . . . . . . D ADDR 009CH NOT USED
BRL. . . . . . . . . . . . . . . . . D ADDR 009AH NOT USED
CCAP0H . . . . . . . . . . . . . . . D ADDR 00FAH NOT USED
CCAP0L . . . . . . . . . . . . . . . D ADDR 00EAH NOT USED
CCAP1H . . . . . . . . . . . . . . . D ADDR 00FBH NOT USED
CCAP1L . . . . . . . . . . . . . . . D ADDR 00EBH NOT USED
CCAP2H . . . . . . . . . . . . . . . D ADDR 00FCH NOT USED
CCAP3H . . . . . . . . . . . . . . . D ADDR 00FDH NOT USED
CCAP4H . . . . . . . . . . . . . . . D ADDR 00FEH NOT USED
CCAPL2H. . . . . . . . . . . . . . . D ADDR 00FCH NOT USED
CCAPL2L. . . . . . . . . . . . . . . D ADDR 00ECH NOT USED
CCAPL3H. . . . . . . . . . . . . . . D ADDR 00FDH NOT USED
CCAPL3L. . . . . . . . . . . . . . . D ADDR 00EDH NOT USED
CCAPL4H. . . . . . . . . . . . . . . D ADDR 00FEH NOT USED
CCAPL4L. . . . . . . . . . . . . . . D ADDR 00EEH NOT USED
CCAPM0 . . . . . . . . . . . . . . . D ADDR 00DAH NOT USED
CCAPM1 . . . . . . . . . . . . . . . D ADDR 00DBH NOT USED
CCAPM2 . . . . . . . . . . . . . . . D ADDR 00DCH NOT USED
CCAPM3 . . . . . . . . . . . . . . . D ADDR 00DDH NOT USED
CCAPM4 . . . . . . . . . . . . . . . D ADDR 00DEH NOT USED
CCF0 . . . . . . . . . . . . . . . . B ADDR 00D8H NOT USED
CCF1 . . . . . . . . . . . . . . . . B ADDR 00D9H NOT USED
CCF2 . . . . . . . . . . . . . . . . B ADDR 00DAH NOT USED
CCF3 . . . . . . . . . . . . . . . . B ADDR 00DBH NOT USED
CCF4 . . . . . . . . . . . . . . . . B ADDR 00DCH NOT USED
CCON . . . . . . . . . . . . . . . . D ADDR 00D8H NOT USED
CFINT. . . . . . . . . . . . . . . . C ADDR 0033H NOT USED
CH . . . . . . . . . . . . . . . . . D ADDR 00F9H NOT USED
CKCON. . . . . . . . . . . . . . . . D ADDR 008FH NOT USED
CKCON0 . . . . . . . . . . . . . . . D ADDR 008FH NOT USED
CKRL . . . . . . . . . . . . . . . . D ADDR 0097H NOT USED
CKSEL. . . . . . . . . . . . . . . . D ADDR 0085H NOT USED
CL . . . . . . . . . . . . . . . . . D ADDR 00E9H NOT USED
CLKREG . . . . . . . . . . . . . . . D ADDR 008FH NOT USED
CMOD . . . . . . . . . . . . . . . . D ADDR 00D9H NOT USED
CPRL2. . . . . . . . . . . . . . . . B ADDR 00C8H NOT USED
CR . . . . . . . . . . . . . . . . . B ADDR 00DEH NOT USED
CT2. . . . . . . . . . . . . . . . . B ADDR 00C9H NOT USED
CY . . . . . . . . . . . . . . . . . B ADDR 00D7H NOT USED
D. . . . . . . . . . . . . . . . . . N NUMB 0090H
DP0H . . . . . . . . . . . . . . . . D ADDR 0083H NOT USED
DP0L . . . . . . . . . . . . . . . . D ADDR 0082H NOT USED
DP1H . . . . . . . . . . . . . . . . D ADDR 0085H NOT USED
DP1L . . . . . . . . . . . . . . . . D ADDR 0084H NOT USED
DPH. . . . . . . . . . . . . . . . . D ADDR 0083H NOT USED
DPL. . . . . . . . . . . . . . . . . D ADDR 0082H NOT USED
E. . . . . . . . . . . . . . . . . . B ADDR 00B2H
EA . . . . . . . . . . . . . . . . . B ADDR 00AFH NOT USED
EC . . . . . . . . . . . . . . . . . B ADDR 00AEH NOT USED
EECON. . . . . . . . . . . . . . . . D ADDR 0096H NOT USED
ES . . . . . . . . . . . . . . . . . B ADDR 00ACH NOT USED
ET0. . . . . . . . . . . . . . . . . B ADDR 00A9H NOT USED
ET1. . . . . . . . . . . . . . . . . B ADDR 00ABH NOT USED
ET2. . . . . . . . . . . . . . . . . B ADDR 00ADH NOT USED
EX0. . . . . . . . . . . . . . . . . B ADDR 00A8H NOT USED
EX1. . . . . . . . . . . . . . . . . B ADDR 00AAH NOT USED
EXEN2. . . . . . . . . . . . . . . . B ADDR 00CBH NOT USED
EXF2 . . . . . . . . . . . . . . . . B ADDR 00CEH NOT USED
EXTI0. . . . . . . . . . . . . . . . C ADDR 0003H NOT USED
EXTI1. . . . . . . . . . . . . . . . C ADDR 0013H NOT USED
F0 . . . . . . . . . . . . . . . . . B ADDR 00D5H NOT USED
FE . . . . . . . . . . . . . . . . . B ADDR 009FH NOT USED
IE . . . . . . . . . . . . . . . . . D ADDR 00A8H NOT USED
IE0. . . . . . . . . . . . . . . . . B ADDR 0089H NOT USED
IE1. . . . . . . . . . . . . . . . . B ADDR 008BH NOT USED
INT0 . . . . . . . . . . . . . . . . B ADDR 00B2H NOT USED
INT1 . . . . . . . . . . . . . . . . B ADDR 00B3H NOT USED
IP . . . . . . . . . . . . . . . . . D ADDR 00B8H NOT USED
IPH. . . . . . . . . . . . . . . . . D ADDR 00B7H NOT USED
IPH0 . . . . . . . . . . . . . . . . D ADDR 00B7H NOT USED
IPH1 . . . . . . . . . . . . . . . . D ADDR 00B3H NOT USED
IPL0 . . . . . . . . . . . . . . . . D ADDR 00B8H NOT USED
IPL1 . . . . . . . . . . . . . . . . D ADDR 00B2H NOT USED
IT0. . . . . . . . . . . . . . . . . B ADDR 0088H NOT USED
IT1. . . . . . . . . . . . . . . . . B ADDR 008AH NOT USED
KBE. . . . . . . . . . . . . . . . . D ADDR 009DH NOT USED
KBF. . . . . . . . . . . . . . . . . D ADDR 009EH NOT USED
KBLS . . . . . . . . . . . . . . . . D ADDR 009CH NOT USED
MAIN . . . . . . . . . . . . . . . . C ADDR 0024H
OSCCON . . . . . . . . . . . . . . . D ADDR 0086H NOT USED
OV . . . . . . . . . . . . . . . . . B ADDR 00D2H NOT USED
P. . . . . . . . . . . . . . . . . . B ADDR 00D0H NOT USED
P0 . . . . . . . . . . . . . . . . . D ADDR 0080H NOT USED
P1 . . . . . . . . . . . . . . . . . D ADDR 0090H NOT USED
P1M1 . . . . . . . . . . . . . . . . D ADDR 00D4H NOT USED
P1M2 . . . . . . . . . . . . . . . . D ADDR 00E2H NOT USED
P2 . . . . . . . . . . . . . . . . . D ADDR 00A0H NOT USED
P3 . . . . . . . . . . . . . . . . . D ADDR 00B0H NOT USED
P3M1 . . . . . . . . . . . . . . . . D ADDR 00D5H NOT USED
P3M2 . . . . . . . . . . . . . . . . D ADDR 00E3H NOT USED
P4 . . . . . . . . . . . . . . . . . D ADDR 00C0H NOT USED
P4M1 . . . . . . . . . . . . . . . . D ADDR 00D6H NOT USED
P4M2 . . . . . . . . . . . . . . . . D ADDR 00E4H NOT USED
P5 . . . . . . . . . . . . . . . . . D ADDR 00E8H NOT USED
PC . . . . . . . . . . . . . . . . . B ADDR 00BEH NOT USED
PCON . . . . . . . . . . . . . . . . D ADDR 0087H NOT USED
PPCL . . . . . . . . . . . . . . . . B ADDR 00BEH NOT USED
PRINT. . . . . . . . . . . . . . . . C ADDR 005BH
PS . . . . . . . . . . . . . . . . . B ADDR 00BCH NOT USED
PSL. . . . . . . . . . . . . . . . . B ADDR 00BCH NOT USED
PSW. . . . . . . . . . . . . . . . . D ADDR 00D0H NOT USED
PT0. . . . . . . . . . . . . . . . . B ADDR 00B9H NOT USED
PT0L . . . . . . . . . . . . . . . . B ADDR 00B9H NOT USED
PT1. . . . . . . . . . . . . . . . . B ADDR 00BBH NOT USED
PT1L . . . . . . . . . . . . . . . . B ADDR 00BBH NOT USED
PT2. . . . . . . . . . . . . . . . . B ADDR 00BDH NOT USED
PT2L . . . . . . . . . . . . . . . . B ADDR 00BDH NOT USED
PX0. . . . . . . . . . . . . . . . . B ADDR 00B8H NOT USED
PX0L . . . . . . . . . . . . . . . . B ADDR 00B8H NOT USED
PX1. . . . . . . . . . . . . . . . . B ADDR 00BAH NOT USED
PX1L . . . . . . . . . . . . . . . . B ADDR 00BAH NOT USED
RB8. . . . . . . . . . . . . . . . . B ADDR 009AH NOT USED
RCAP2H . . . . . . . . . . . . . . . D ADDR 00CBH NOT USED
RCAP2L . . . . . . . . . . . . . . . D ADDR 00CAH NOT USED
RCLK . . . . . . . . . . . . . . . . B ADDR 00CDH NOT USED
RD . . . . . . . . . . . . . . . . . B ADDR 00B7H NOT USED
REN. . . . . . . . . . . . . . . . . B ADDR 009CH NOT USED
RESET. . . . . . . . . . . . . . . . C ADDR 0000H NOT USED
RI . . . . . . . . . . . . . . . . . B ADDR 0098H NOT USED
RS . . . . . . . . . . . . . . . . . B ADDR 00B0H
RS0. . . . . . . . . . . . . . . . . B ADDR 00D3H NOT USED
RS1. . . . . . . . . . . . . . . . . B ADDR 00D4H NOT USED
RW . . . . . . . . . . . . . . . . . B ADDR 00B1H
RXD. . . . . . . . . . . . . . . . . B ADDR 00B0H NOT USED
SADDR. . . . . . . . . . . . . . . . D ADDR 00A9H NOT USED
SADDR_0. . . . . . . . . . . . . . . D ADDR 00A9H NOT USED
SADDR_1. . . . . . . . . . . . . . . D ADDR 00AAH NOT USED
SADEN. . . . . . . . . . . . . . . . D ADDR 00B9H NOT USED
SADEN_0. . . . . . . . . . . . . . . D ADDR 00B9H NOT USED
SADEN_1. . . . . . . . . . . . . . . D ADDR 00BAH NOT USED
SBUF . . . . . . . . . . . . . . . . D ADDR 0099H NOT USED
SCON . . . . . . . . . . . . . . . . D ADDR 0098H NOT USED
SINT . . . . . . . . . . . . . . . . C ADDR 0023H NOT USED
SM0. . . . . . . . . . . . . . . . . B ADDR 009FH NOT USED
SM1. . . . . . . . . . . . . . . . . B ADDR 009EH NOT USED
SM2. . . . . . . . . . . . . . . . . B ADDR 009DH NOT USED
SP . . . . . . . . . . . . . . . . . D ADDR 0081H NOT USED
SPCON. . . . . . . . . . . . . . . . D ADDR 00C3H NOT USED
SPCR . . . . . . . . . . . . . . . . D ADDR 00D5H NOT USED
SPDAT. . . . . . . . . . . . . . . . D ADDR 00C5H NOT USED
SPDR . . . . . . . . . . . . . . . . D ADDR 0086H NOT USED
SPSR . . . . . . . . . . . . . . . . D ADDR 00AAH NOT USED
SPSTA. . . . . . . . . . . . . . . . D ADDR 00C4H NOT USED
START. . . . . . . . . . . . . . . . C ADDR 001CH
STRING . . . . . . . . . . . . . . . C ADDR 0003H
T0 . . . . . . . . . . . . . . . . . B ADDR 00B4H NOT USED
T1 . . . . . . . . . . . . . . . . . B ADDR 00B5H NOT USED
T2CON. . . . . . . . . . . . . . . . D ADDR 00C8H NOT USED
T2MOD. . . . . . . . . . . . . . . . D ADDR 00C9H NOT USED
TB8. . . . . . . . . . . . . . . . . B ADDR 009BH NOT USED
TCLK . . . . . . . . . . . . . . . . B ADDR 00CCH NOT USED
TCON . . . . . . . . . . . . . . . . D ADDR 0088H NOT USED
TF0. . . . . . . . . . . . . . . . . B ADDR 008DH NOT USED
TF1. . . . . . . . . . . . . . . . . B ADDR 008FH NOT USED
TF2. . . . . . . . . . . . . . . . . B ADDR 00CFH NOT USED
TH0. . . . . . . . . . . . . . . . . D ADDR 008CH NOT USED
TH1. . . . . . . . . . . . . . . . . D ADDR 008DH NOT USED
TH2. . . . . . . . . . . . . . . . . D ADDR 00CDH NOT USED
TI . . . . . . . . . . . . . . . . . B ADDR 0099H NOT USED
TIMER0 . . . . . . . . . . . . . . . C ADDR 000BH NOT USED
TIMER1 . . . . . . . . . . . . . . . C ADDR 001BH NOT USED
TIMER2 . . . . . . . . . . . . . . . C ADDR 002BH NOT USED
TL0. . . . . . . . . . . . . . . . . D ADDR 008AH NOT USED
TL1. . . . . . . . . . . . . . . . . D ADDR 008BH NOT USED
TL2. . . . . . . . . . . . . . . . . D ADDR 00CCH NOT USED
TMOD . . . . . . . . . . . . . . . . D ADDR 0089H NOT USED
TR0. . . . . . . . . . . . . . . . . B ADDR 008CH NOT USED
TR1. . . . . . . . . . . . . . . . . B ADDR 008EH NOT USED
TR2. . . . . . . . . . . . . . . . . B ADDR 00CAH NOT USED
TXD. . . . . . . . . . . . . . . . . B ADDR 00B1H NOT USED
WDTCON . . . . . . . . . . . . . . . D ADDR 00A7H NOT USED
WDTPRG . . . . . . . . . . . . . . . D ADDR 00A7H NOT USED
WDTRST . . . . . . . . . . . . . . . D ADDR 00A6H NOT USED
WR . . . . . . . . . . . . . . . . . B ADDR 00B6H NOT USED
