Just found something a few people have been looking for - a way to upgrade a Z80 pod to Z80AA! It involves modifying the pod slightly, faster clock crystal, and away you go with Z80B speeds! Also, have found errata info for the Z80 pod. Also added some additional stuff for 9100A_Systems Training (extras) and a nice cover for you to attach to your binder. Look in the PDFs (pods and 9100_Fixture) section for these updates. As a further topic for possible interest - the Z80QT uses the same lower board as the Z80/Z80AA. Perhaps someone with timeontheir hands could make a replacement upper board so folks could convert their Z80/AA pods to the QT pod. Advantages to QT? Quick Test - RAM and ROM tests are up to ten times faster - test is done directly on the motherboard from code in the pod, no back&forth between the pod and the base (9010/9100) to do each memory address... Anyone who has a QT doesn't go back to the regular pod easily! John :-#)# PS, still looking for the 9100FT service manual. _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com http://seven.pairlist.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org Archive site: http://seven.pairlist.net/pipermail/techtoolslist/