Date: Tue, 15 Apr 1997 12:18:55 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: grog@lemis.de Cc: msmith@atrad.adelaide.edu.au, chat@FreeBSD.ORG Subject: Re: weird cable Message-ID: <199704150248.MAA02677@genesis.atrad.adelaide.edu.au> In-Reply-To: <199704150201.LAA00629@papillon.lemis.de> from "grog@lemis.de" at "Apr 15, 97 11:01:27 am"
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grog@lemis.de stands accused of saying: > Michael Smith writes: > > Christoph Haas stands accused of saying: > >> On Mon, 14 Apr 1997, Michael Smith wrote: > >> > >>> If you want to _interface_ it, then you are going to have to write your > >>> own keyboard interface driver, and you will need a logic/RS-232 level > >>> inverter. > >> > >> So a SUN uses a simple RS232 interface to attach its keyboard ? > > > > Yup, like many sensible workstation vendors, a real, async serial > > protocol. None of this clocked bidirectional two-wire sync crap 8) > > Wouldn't this make it more appropriate to connect to a serial port, > then? That way you'd save on the logic glue. Yup, that's the idea. You still need a power supply and a level converter, and if you want to use the mouse, two serial ports, but you could use a really old and crappy 8250-based card with no fear of overrunning it. > Greg > -- ]] Mike Smith, Software Engineer msmith@gsoft.com.au [[ ]] Genesis Software genesis@gsoft.com.au [[ ]] High-speed data acquisition and (GSM mobile) 0411-222-496 [[ ]] realtime instrument control. (ph) +61-8-8267-3493 [[ ]] Unix hardware collector. "Where are your PEZ?" The Tick [[
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