NetBSD master CVS tree commits

[source%NetBSD.ORG@localhost]

pk
Mon Apr 14 14:26:30 PDT 1997
Update of /cvsroot/src/sys/arch/sparc/dev
In directory netbsd1:/var/slash-tmp/cvs-serv9655

Modified Files:
        zsvar.h zs.c 
Log Message:
Avoid race for the chip's interrupt pending status bits in zscnputc()
by introducing a single-character queue to defer kernel console output
until the transmitter interrupt handler runs.