I just got in my second Fluke 9010A (ver 3 software), and packed with it was some interesting extension sockets. These have some prototyping area on a circuit board on the bottom, and it will plug in-between the UUT CPU socket and the pod plug. Part number 9000A 7201. Fair enough, looks useful for probing, BUT also included was one of these extension plug/sockets with a circuit built in (factory) with an identification of "CKT 1 REV D", and on the top side of the circuit board a couple of ICs ICM72091PA, and 74H00 with the identification of "CKT 2 ASSY 612127". Looks like it might be some sort of reset board. Anyone know for sure? Let's see, pin 20 is ground, pin 40 looks like it is 5VDC, there is what looks like a transistor seems to turn on the Vcc to the power to the 74H00...hmmm...AND there are three jumper plugs. All in the space one CPU wide by about three CPU's high. (8 bit CPUs) John :-#)# John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games) http://www.flippers.com "Old pinballers never die, they just flip out."