8085 BCD Counter to 7 Segment LED using 8255 PPI

[Rushdiey]

Who know how 2 make bcd counter to 7segment led using 825

	ORG	0000H

PORTA:	EQU	80H	
PORTB:	EQU	81H
PORTC:	EQU	82H
CTRL:	EQU	83H

	  MVI A, 10001001B 	; Control word setting where Port A AND B = O/P and Port C= I/P. 
          OUT 83H 		; Send control word to control register.
          MVI A,00111111B
          OUT PORTA 
          OUT PORTB
          MVI B,00H
	
	  OUT	CTRL

REPEAT:	IN	PORTC	
	ANI	00001111B
	CPI	00001111B
	JNZ	CONT

	XRA 	A
	OUT	PORTA

	JMP	REPEAT

CONT:	LXI	H,TABLE
	
	MVI	B,0
	MOV	C,A
	DAD	B
	MOV	A,M
	OUT	PORTA
	JMP	REPEAT
	
TABLE:	DFB	00111111B,00000110B,01011011B,01001111B,01100110B
	DFB	01101101B,01111101B,00000111B,01111111B,01101111B

i manage do 0-9 only
Now i want to do 0-99

 

[milan.rajik]

I know but not is ASM. I do it in C. I use mikroC PRO 8051 Compiler.

 

[Rushdiey]

I know but not is ASM. I do it in C. I use mikroC PRO 8051 Compiler.

I know for microC but microp is kinda hard

 

[milan.rajik]

Sorry. I misread it as 8051. It is 8085. I can't help with it.

Here is a simulator that you can use.

**broken link removed**