On Sun, Oct 17, 2004 at 11:25:34AM +1000, Mr.Pink bedak wrote:
> hi..
>         Is there any configurtion that i need to
> change so that 16f628 act like the 16F84?

The changes listed below. Microchip consistently takes
any analog inputs and configures them as analog by default.
So when you want to emulate a 16F84A, which has no analog
inputs, you have to change them to digital. The CMCON
register, which controls the analog comparators on the 16F628
is what you need to set.

>what abouT
> USART?should i include some command in my programing? 

The by far best description of the PIC USART is Fr. Tom
McGahee's PICUART tutorial. You can find it here:

http://www.pic101.com/mcgahee/index.html

The specific example for the 16F628 derived from Fr. McGahee's
code can be found here:

http://www.amrad.org/projects/lf/PIC8_4B.ASM

BAJ
> --- Sascha <sascha@go.ro> wrote: 
> > 
> > I use this to configure the 16F628 to act like the
> > 16F84:
> > 
> > 	CLRF	PORTA
> > 	MOVLW	b'00000111'
> > 	MOVWF	CMCON		; turn off comparators
> > 	CLRF	STATUS
> > 	BSF	STATUS,RP0	; select BANK1 for operation
> > 	CLRF	TRISB		; config PORTB & PORTA pins
> > 	CLRF	TRISA
> > 	; do OPTION_REG configuration here
> > 	; do INTCON configuration here
> > 	BCF 	STATUS,RP0	; back to BANK0
> > 	MOVF	CMCON,F
> > 
> > Regards,
> > Sascha
> > 
> 
> 
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