Hi all,

Im building a project that speaks to the PC trough the parallel port, the data port is connected to P2, and some control and status pins are connected to some of the P3 pins.
When I connect the LPT cable, with NO +5 Vcc supply connected to the board, it starts working and even light some leds (4) connected to P1 (with half of the glow).
I just like to know why... Because thats not to good for reseting. How can I stop that with FEW more parts? (the case is already small)

Gabriel