VTech Alphabert s Magic Readport User Manual download pdf (Page 33)

BM Dept., Govt. Engg. College, Gandhinagar Page 33

ACALL DELAY

MOVC A,@A+DPTR

MOV P1,A ;Display count value

AJMP again ;Continue DIP switch reading process

DELAY: MOV R6,#0ffh

LOOP1: DJNZ R6,LOOP1

RET

CODE: db 0C0h,0F9h,0A4h,0B0h,99h,92h,82h,0F8h,80h,90h,0C8h,

db 83h,0C6h,0A1h, 86h, 8Eh, 00h

END

:: WORKSHEET ::

Exercise:

A. Write program to display count value F to 0 at the interval of 1 second on seven segment

display connected at port P1.

Memory

Location

HEX

code

Label Opcode Operands Comments

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 79 80

No comments

VTech Alphabert s Magic Readport User Manual Page 33