Some instructios/notes on the tracking code:

Note: right now, track must be built as root in order to access the 
serial ports. 

Most interprocess communciation is perfomed using a shared memory 
mapped file called
CORE (usually /home/wiro/wiro/track/COREFILE; defined in wiro.h.)
wiro.h defines the structure wiro_memory which contains the relevent variables
and some shortcuts for getting to them.

get_tinfo.c defines a function for opening and sharing this structure; most
programs access shared memory using this code.

COREFILE is maintained between executions of the code; makecorefile.c 
initializes
the variables to reasonable values if it gets zorched.

track is the main program for tracking the telescope; it controls the servo
loops and performs the appropriate hardware interfacing over IEEE 488
(currently acceessed through a Micro 488 on the serial port.)

catalogs are placed in CATALOGS (../catalogs) directory. 
the current catalog is pointed to by the file current.cat (except
that the CATALOGS prefix is removed).