Solaris Common Messages and Troubleshooting Guide


This message means that the Zilog 8530 character input silo (or serial port FIFO) overflowed before it could be serviced. The zs(7D) driver, which talks to a Zilog Z8530 chip, is reporting that the FIFO (holding about two characters) has been overrun. The number after zs(7D) shows which serial port experienced an overflow:

zs0 - tty serial port 0 (/dev/ttya)
zs1 - tty serial port 1 (/dev/ttyb)
zs2 - keyboard port (/dev/kbd)
zs3 - mouse port (/dev/mouse)