Chips on Talon board for VAX

A while back, I posted a message about a mystery board that came with my VAX-4000/200 manufactured by a company named Talon. This board has one 15-pin connector, a couple of 32x8 SRAM chips, a 68K CPU, assorted logic chips, and a couple of chips that I can't identify, such as: - Rockwell R65NC22J4 11484-39 9244 94314-3 - is this just a Rockwell version of a 6522 interface chip? - (unknown mfr.) 9206 SC11290CN There's one area where a second, much smaller, circuit board is attached to this one with chips between the two boards; however, there are many wires soldered between the boards holding the two boards together, and I'd rather save unsoldering them all as a last resort. Any thoughts on what this board might be? -- Copyright (C) 2001 R. D. Davis The difference between humans & other animals: All Rights Reserved an unnatural belief that we're above Nature & rdd(a)rddavis.org 410-744-4900 her other creatures, using dogma to justify such http://www.rddavis.org beliefs and to justify much human cruelty.