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      1  1.54  msaitoh #	$NetBSD: FOUR_TTYS,v 1.54 2021/12/05 07:02:28 msaitoh Exp $
      2   1.1      gwr 
      3   1.1      gwr # FOUR_TTYS Sun3 (3/50, 3/60, 3/110, 3/160, 3/260)
      4   1.1      gwr # like GENERIC but both zs chips are used as ttys
      5   1.1      gwr 
      6  1.52  tsutsui include "arch/sun3/conf/GENERIC"
      7  1.17      gwr 
      8   1.1      gwr #
      9  1.54  msaitoh # Note that by omitting "kdb0" and "ms0" one can build
     10   1.1      gwr # a kernel that operates four plain serial lines, where
     11   1.1      gwr # two of them are data-leads-only ports wired up using
     12  1.15      gwr # a custom cable on the keyboard connector.  The flags 1
     13  1.15      gwr # part sets TIOCFLAG_SOFTCAR (remember, data-leads-only).
     14  1.20      gwr # Note: the signal levels on these are 0/5 Volt TTL.
     15   1.1      gwr #
     16  1.52  tsutsui no kbd0	at zsc0
     17  1.52  tsutsui no ms0	at zsc0
     18  1.15      gwr zstty2	at zsc0 channel 0 flags 1 # ttyc
     19  1.15      gwr zstty3	at zsc0 channel 1 flags 1 # ttyd
     20