;;09-21-86
                         EGPASS.DOC v2
                            01/11/87
Eric Gans
French Dep't UCLA
Los Angeles, CA 90024

Version 2 update:

PASS now accepts passwords between 3 and 12 letters (change using 
PASCH.COM  v2).   If you get the password wrong,  it looks on A0: 
for  OFF.COM  or SAFETY.COM and runs that;  if  it  doesn't  find 
either  name,  it goes into and endless loop.   PASS now prints a 
"#" for each letter typed,  so you can keep track of what  you're 
doing when you enter your password.

                              * * *

     The  password  program PASS.COM affords a modest  degree  of 
protection  for  users  of systems that boot from  a  hard  (i.e. 
fixed)  disk.   It  gives  the user three chances  to  enter  the 
correct  pasword,  then  either  runs  the  hard-disk  protection 
program  SAFETY.COM  (often  renamed  OFF.COM) or  goes  into  an 
endless loop.  

     By autoloading PASS on (cold) boot,  you make it  impossible 
to  get  around  the password without rebooting from  the  floppy 
drive (and you need a floppy with system tracks to do  it).  This 
should  prevent casual pests from using your computer when you're 
not around, although of course it won't stop the hackers.

     The password must be between three and twelve letters  long, 
and  can  contain  any printable character  (lower-case  will  be 
folded to upper-case).  The original password is ...  you guessed 
it,  PASSWORD.  The  enclosed file PASCH.COM (v2) can be used  to 
change the password (don't leave it on your disk!).  

NB - previous versions of PASCH.COM will not work with PASS v2!

     Autoloading can be accomplished most simply by using  CMDLN.
Or you can patch the CCP in SYSGEN, PUTSYS etc. &  then write the 
new  image  back to the system tracks of the hard  disk.  On  the 
Kaypro-10 the file is called PUTSYS.COM. The patch location is at 
987h, the standard location of the CCP on  all such programs.

987h --> 4 (number of characters) 
988h --> 50h (=P) 
989h --> 41h (=A) 
98ah --> 53h (=S)
98bh --> 53h (=S) 
98ch --> 0 (terminator)

The  same patch can be placed on floppies (it requires a copy  of 
PASS on each disk).

NB  -- On some systems a file autoloaded in this manner  will  be 
run at each warm boot.  The K-10 doesn't do this because the BIOS 
warm  boot routine zeroes the character count byte at  CCP+7.  If 
your BIOS doesn't do this you should patch it, unless you want to 
enter passwords all day long.