The problem is a high level on the pins when the FPGA is turned on ep1с3т100с8n

Before user configuration becomes effective, all IOs are pulled up by a weak pull-up resistor, a well documented behavior of all Altera FPGAs.

The best solution is to chose active low level for critical signals, e.g. when turning on external devices. The next best is to add external pull-down resistors to these pins that override the weak pull-up.