The I2C programmer derives its power from the RS232 port off the PC.  It has
been used to program Microchip 24LC65, 24LC128 and 24LC256 EEPROMS.  Use
ICProg software to control the programmer, configure as a JDM programmer.  I
have left pin 7 open circuit but ICProg recommends it is connected to GND for
24Cxx devices and Vcc for PCF devices.