Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!ucsd!sdcc6!jclark From: jclark@sdcc6.ucsd.edu (John Clark) Newsgroups: comp.sys.m68k Subject: Re: Zilogs Z8530 SCC - Help Required Message-ID: <19063@sdcc6.ucsd.edu> Date: 6 May 91 22:42:24 GMT References: Distribution: comp Organization: University of California, San Diego Lines: 22 In article steveh@tasman.cc.utas.edu.au (Steven Howell) writes: + +I now am back to were i started from. In need a four or 2 port serial +controller chip. Have you looked at the Signetics 269x chip. It has 'directly' available registers, a few 'quirks', does 'Async' only. If you don't need synchronous then it might be a solution. One 'problem' is that one interrupt serves all. So software must read a register to learn that a data byte has been received or a parity error detected, etc. Another is it has a baud rate table, two to be exact so one has to select which table and which entry, the maximum in either is 38.4K. The Zilog/AMD 8530 allows 1 Meg in some configs and versions(85300 or something like that). -- John Clark jclark@ucsd.edu