Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/5/84; site steinmetz.UUCP Path: utzoo!watmath!clyde!burl!ulysses!bellcore!decvax!mcnc!ncsu!uvacs!edison!steinmetz!davidsen From: davidsen@steinmetz.UUCP Newsgroups: net.arch Subject: Re: S-100 spec? Message-ID: <641@steinmetz.UUCP> Date: Sat, 1-Feb-86 14:36:24 EST Article-I.D.: steinmet.641 Posted: Sat Feb 1 14:36:24 1986 Date-Received: Mon, 3-Feb-86 05:37:09 EST References: <5600039@uiucdcsb> Reply-To: davidsen@kbsvax.UUCP (Davidsen) Organization: GE CRD, Schenectady, NY Lines: 16 Summary: S100 = IEEE-696 Standard. I don't have the address of the IEEE handy, but you should be able to get it. Yes, the data bus changes definition for 16 bit transfers. Normally there is an 8 bit write and 8 bit read bus (allowing TMA bidirectionally if supported), but when the SIXTN (pin 60) is active, the data bus becomes a unidirectional 16 bit bus. -- -bill davidsen seismo!rochester!steinmetz!--\ / \ ihnp4! unirot ------------->---> crdos1!davidsen \ / chinet! ---------------------/ (davidsen@ge-crd.ARPA) "It seemed like a good idea at the time..."