Hello All,

I have a question about the Pic 16f877. First let me explain the circuit. I
am using the Romzap programmer to program my 877. I have port d pins 4-7
connected to some ir transmitting circuitry(4 identical circuits). The
transmitting circuitry consists of a 1K resistor connected to the base of a
2n4401 transistor and the other end to the port pin. The emitter is grounded
and the collector is connected to 3 ir transmitter leds in series and a 10
Ohm resistor. The problem is that when I try to connect to the Romzap, the
program that I originally burnt on to the chip starts running. Romzap also
says that it is "Connected to Boot loader" but it is not actually connected.
I think that the circuit is draining too much current and is causing a
communication problem with the Romzap(PC). I think this requires some
carefully placed capacitors. Does anyone have any suggestions?

Regards

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