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FOUR_TTYS revision 1.54 
      1 #	$NetBSD: FOUR_TTYS,v 1.54 2021/12/05 07:02:28 msaitoh Exp $
      2 
      3 # FOUR_TTYS Sun3 (3/50, 3/60, 3/110, 3/160, 3/260)
      4 # like GENERIC but both zs chips are used as ttys
      5 
      6 include "arch/sun3/conf/GENERIC"
      7 
      8 #
      9 # Note that by omitting "kdb0" and "ms0" one can build
     10 # a kernel that operates four plain serial lines, where
     11 # two of them are data-leads-only ports wired up using
     12 # a custom cable on the keyboard connector.  The flags 1
     13 # part sets TIOCFLAG_SOFTCAR (remember, data-leads-only).
     14 # Note: the signal levels on these are 0/5 Volt TTL.
     15 #
     16 no kbd0	at zsc0
     17 no ms0	at zsc0
     18 zstty2	at zsc0 channel 0 flags 1 # ttyc
     19 zstty3	at zsc0 channel 1 flags 1 # ttyd
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