Nobody/Anonymous - 2009-09-09

here is what i have:
#chip 16F916, 4 'mhz
#config OSC=INTOSC, MCLRE=off, WDT=off
#mem 256 'Chip has 256 bytes

On Interrupt ExtInt0 call serial_in
IntOn
lcdcon = 0
dim temp as byte
dim temp2 as byte

#define RecAHigh portb.0 off
#define RecAlow portb.0 on
Initser 1,r1200,1+waitforstart, 8, 1, none, invert
dir portc.1 out
dir portb.0 in 'serial

main:
epread 1, aa
if aa = 1 then set portc.1 on
if aa = 0 then set portc.1 off
goto main

Sub serial_in
SerReceive 1, temp 
SerReceive 1, temp2
temp = temp - 96 'a=1 b=2, etc
temp2 = temp2 - 48 ' sets number to actual not ascii value
EPWrite temp, temp2
End Sub 

it works sometimes, but the values it recieves are not consistant, I write to location temp but the location is not always consistant even though i send the same value to it, and i find i can send it several 1's or 0's and get it to activate also I'm not sure why