Problem with zsh on TTY.

["Breen, Ted" <TBreen@xxxxxxxxxxxxxxxxxxxxxxx>]

I am having trouble with zsh on serial terminals. The " bad tiocgwinsz " 
message happens on login and "TTY read error" message on logout. The csh and 
ksh shells run  ok. Any help with fixing this problem will be appreciated. 
The zsh shell was installed by an application developer and works fine on 
xterm.  The HOST processor is a  SiliconGraphics 4D320S running IRIX 5.2. 
 As I am fairly new to the internet and unix I would like a direct reply if 
possible. I  have "netscape" on a  PC  and have found the zsh FAQ and 
software. I don't know what "tiocgwinsz" means.
*** Login Example ****
Password
IRIX Release 5.2 IP7
zsh: bad tiocgwinsz: invalid argument
%
zsh: settyinfo: invalid argument
%
[A[8C
zsh: settyinfo: invalid argument
%
zsh: settyinfo: invalid argument
%                                                          ***** Entered ^D 
here.*****

zsh: error on TTY read: error 0


*** Using csh to get info.****

TERM = (vt100)
% which zsh
/usr/bin/zsh
% ls -la /usr/bin/zsh
 -rwxr-xr-x    1 root     sys       327680 Oct 31  1991 /usr/bin/zsh

zsh2.3.1:
total 111
drwxr-xr-x    9 bin      bin          512 Jan 11  1993 .
drwxr-xr-x    4 root     sys         3072 May  6  1994 ..
 -r--r--r--    1 bin      bin        21578 Feb  5  1993 FAQ
 -r--r--r--    1 bin      bin         2684 Jan 31  1993 FEATURES
 -r--r--r--    1 bin      bin          507 Jan 31  1993 NOTES
 -r--r--r--    1 bin      bin        22439 Feb  6  1993 README
drwxr-xr-x    2 bin      bin          512 Jan 11  1993 doc
drwxr-xr-x    2 bin      bin          512 Jan 11  1993 dots
drwxr-xr-x    2 bin      bin          512 Jan 11  1993 func
drwxr-xr-x    2 bin      bin         1024 Jan 11  1993 help
drwxr-xr-x    4 bin      bin          512 Jan 11  1993 man
drwxr-xr-x    2 bin      bin          512 Jan 11  1993 scripts
drwxr-xr-x    2 bin      bin         1536 Jan 11  1993 src

Ted Breen
TBreen@xxxxxxxxxxxxxxxxxxxxxxx
18-JUL-95.