could not create shared memory segment: Function not implemented

I'm installing 7.4.6 source under Windows 2000/cygwin and can't seem
to get the initdb step no matter what. The following is what I get.
The archive answers on this are either incomplete or unclear. Can
someone please help?

--Randy



$ /usr/local/pgsql/bin/initdb -D /usr/local/pgsql/data
The files belonging to this database system will be owned by user "yates".
This user must also own the server process.

The database cluster will be initialized with locale C.

creating directory /usr/local/pgsql/data... ok
creating directory /usr/local/pgsql/data/base... ok
creating directory /usr/local/pgsql/data/global... ok
creating directory /usr/local/pgsql/data/pg_xlog... ok
creating directory /usr/local/pgsql/data/pg_clog... ok
selecting default max_connections... 10
selecting default shared_buffers... 50
creating configuration files... ok
creating template1 database in /usr/local/pgsql/data/base/1... FATAL:  could not create shared memory segment: Function
notimplemented 
DETAIL:  Failed system call was shmget(key=1, size=1081344, 03600).

initdb: failed
initdb: removing data directory "/usr/local/pgsql/data"

yates@leibniz ~
$ ps
      PID    PPID    PGID     WINPID  TTY  UID    STIME COMMAND
I    1264       1    1264       1264  con  400 22:03:23 /usr/bin/bash
     1500    1264    1500       1496  con  400 22:03:53 /usr/bin/xterm
      508    1500     508        812    0  400 22:03:53 /usr/bin/bash
     1540    1264    1540       1560  con  400 22:03:55 /usr/bin/xterm
     1556    1540    1556       1536    1  400 22:03:55 /usr/bin/bash
I     984    1556     984       1192    1  400 09:04:03 /usr/bin/less
     1644     508    1644       1676    0  400 10:28:32 /usr/sbin/cygserver
     1664     508    1664       1712    0  400 10:29:58 /usr/bin/ps

yates@leibniz ~
--
%  Randy Yates                  % "She's sweet on Wagner-I think she'd die for Beethoven.
%% Fuquay-Varina, NC            %  She love the way Puccini lays down a tune, and
%%% 919-577-9882                %  Verdi's always creepin' from her room."
%%%% <yates@ieee.org>           % "Rockaria", *A New World Record*, ELO
http://home.earthlink.net/~yatescr