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