In a collection of Z80 pods that I bought recently there was a Z80A pod, opening it up reveled what looked like a standard Z80 with a slightly different revision number on the hardware, and the eprom had a different revision number. The CPU chip was the same speed, and I don't recall any other changes. If anyone is interested I will dig some more and post here the hardware revisions. If anyone is interested in the code, it is pretty small (only 2K unzipped), would folks mind if I just posted it? That would be easiest... 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." To UNSUBSCRIBE from techtoolslist, send a message with "UNSUBSCRIBE" in the message body to: techtoolslist-request@flippers.com. Please direct other questions, comments, or problems to jrr@flippers.com.