Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10 5/3/83; site intelca.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!genrad!decvax!decwrl!amd!intelca!cem From: cem@intelca.UUCP (Chuck McManis) Newsgroups: net.micro,net.micro.cbm Subject: Re: RS422 to IEEE488 convert Message-ID: <445@intelca.UUCP> Date: Fri, 9-Nov-84 15:37:32 EST Article-I.D.: intelca.445 Posted: Fri Nov 9 15:37:32 1984 Date-Received: Sat, 10-Nov-84 10:23:37 EST References: <152@qumix.UUCP> <4584@utzoo.UUCP> <574@turtlevax.UUCP> Organization: Intel, Santa Clara, Ca. Lines: 17 Xref: genrad net.micro:9200 net.micro.cbm:935 If I am not mistaken the IEEE-488, aka the GPIB bus is parallel, whereas the RS-232 port is serial. The RS-232 488 bus refers to an IEEE-488 bus with RS-232 signal levels (ie <-3V ,>+3V) whereas the RS-422 levels refer to a differential signal (2 wires/signal line the voltage difference is >+/- 3 V) An RS-422 serial to IEEE-488 parallel converter would probably involve a single chip microcomputer with a serial channel and some parallel lines that was programmed to do the conversion. (an 8751 comes to mind :-) ) Then again I may have entirely misinterpreted the question. -- -- Chuck - - - D I S C L A I M E R - - - {ihnp4,fortune}!dual\ All opinions expressed herein are my {proper,idi}-> !intelca!cem own and not those of my employer, my {ucbvax,hao}!hplabs/ friends, or my avocado plant. :-} ARPAnet : "hplabs!intelca!cem"@Berkeley