More housecleaning :) 7-part "Build a Microcomputer" looseleaf application note series from AMD 1978, based on their 2900 series devices. Chapters are: Computer Architecture, Microprogrammed Design, The Data Path I & II, Program Control Unit, Interrupt, Direct Memory Access. $5 plus Media Mail shipping from 65775. "OS/2 Complete: A practical guide to the OS/2 operating system" version 2.1 by Peter Franken, 1992. $3 plus shipping. thanks Charles