NVIS 5586A, Learning Material

Page: 137 / 191

Nvis 5586A
Nvis Technologies Pvt. Ltd. 137
Program 23:
Find whether a no is even or odd and display it on LCD.
Address Opcode Mnemonic Comments
0400 B8 55 55 MOV AX, 5555 H (DATA) COPY 5555 IN AX
0403 D1 C8 ROR AX, 01 SHIFT RIGHT 1-BIT OF AX
0405 73 49 JNC 450 JUMP TO MEMORY LOCATION 450 H IF NO CARRY
0407 B3 C0 MOV BL,C0 COPY C0 IN BL
0409 9A 78 F0 00 F0 CALL F000:F078 CLEAR THE SECOND LINE
040E B0 C2 MOV AL,C2 PARAMETER OF SUBPROGRAM STORED IN AL. B)-
B5 IS WRITTEN INTO LCD ADDRESS COUNTER,
INSTRUCTED THE WORD ON THE MOST LEFT SIDE.
B6 AS 1 REPRESENTS THE SECOND LINE.B7 AS 1
REPRESENTS THE SET D.D. RAM ADDRESS
INSTRUCTION.
0410 9A 44 F0 00 F0 CALL F000:F044 COMMANDS IN AL ARE WRITTEN INTO LCD
0415 0E PUSH CS
0416 1F POP DS SEGMENT VALUE SET FOR TABLE CHECKING
0417 BE 00 06 MOV SI,600 STARTING ADDRESS OF TABLE CHECKING IS
STORED INTO SI
041A B9 0A 00 MOV CX,0A STORE TABLE CHECKING LENGTH IN CX
041D FC CLD CLEAR DIRECTIONAL FLAG
041E AC LODSB READ IN DATA FROM TABLE CHECKING SECTION
UNTIL AL.
041F 9A 48 F0 00 F0 CALL F000:F048 INPUT AL DATA INTO LCD MODULAR.
0424 E2 F7 LOOP 041D CX NOT EQUAL TO 0 WOULD CONTINUE
EXECUTION LOOP
0426 F4 HLT HALT
0450 B3 C0 MOV BL,C0 COPY C0 IN BL
0452 9A 78 F0 00 F0 CALL F000:F078 CLEAR THE SECOND LINE
0457 B0 C2 MOV AL,C2 PARAMETER OF SUBPROGRAM STORED IN AL. B)-
B5 IS WRITTEN INTO LCD ADDRESS COUNTER,
INSTRUCTED THE WORD ON THE MOST LEFT SIDE.
B6 AS 1 REPRESENTS THE SECOND LINE.B7 AS 1
REPRESENTS THE SET D.D. RAM ADDRESS
INSTRUCTION.
0459 9A 44 F0 00 F0 CALL F000:F044 COMMANDS IN AL ARE WRITTEN INTO LCD