Connect AVR with parallel port        AVR                       Parallel Port   Signal name   Pin             Pin  Signal name   GND           20 ------------ 19   GND   GND           20 ------------ 21   GND   SCK            8 ------------  1   Strobe   MOSI           6 ------------  2   Data 0   MISO           7 ------------ 11   Busy   Reset          9 ------------ 16   InitThis scheme works with all parallel port modes (EPP,ECP, classic).Copyright (C) 1998 by Alexey Lapshin and Sergey Larin.This scheme can be modifyed as described in send_byte.sNote: The ATmega128 (maybe other megas too) uses PDI and PDO for spiprogramming instead of MISO and MOSI. You will need to modify theconnections accordingly.