Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!usc!zaphod.mps.ohio-state.edu!uwm.edu!lll-winken!iggy.GW.Vitalink.COM!widener!msi.umn.edu!math.fu-berlin.de!fub!geminix.in-berlin.de!gemini From: gemini@geminix.in-berlin.de (Uwe Doering) Newsgroups: comp.unix.sysv386 Subject: Re: Summary: 4-port cards Message-ID: Date: 23 Apr 91 18:50:23 GMT References: <1991Apr21.224353.693@unixland.uucp> Organization: Private UNIX Site Lines: 20 rcbarn@rw7.urc.tue.nl (Raymond Nijssen) writes: >bill@unixland.uucp (Bill Heiser) writes: >>In article davidg%aegis.or.jp@kyoto-u.ac.jp (Dave McLane) writes: >>> You can buy NS16550AFNs from Altex Electronics. >>Careful here ... I ordered *NS16550A* chips [...] > >Be even more careful here! Only the AFN version offers a 16 byte FIFO. I disagree. I developed FAS for NS16550A chips, and have six of them on my own serial card. And obviously, FAS uses the 16 byte FIFOs. The `AF' version has a faster timing, but is functionally equivalent to the `A' version. The trailing `N' indicates the packaging technique used for this chip, in this case a plastic body in DIL form. Uwe -- Uwe Doering | INET : gemini@geminix.in-berlin.de Berlin |---------------------------------------------------------------- Germany | UUCP : ...!unido!fub!geminix.in-berlin.de!gemini