Locations for:  Version 2.4 software  

LOADER24 :  Unit ID# first eight digits at location 0235 (forward)
            Current month and service ID# at 0246 & 0247 (28a5)
	Make sure 6223 is D0
            Even month key starting at 0100, 
	Odd  month key starting at 0163
            
            Seed Keys at 2000
            Example - 2000 ** ** ** ** ** ** ** 00 ** ** ** ** ** ** ** 00
                           ** ** ** ** ** ** ** 00 ** ** ** ** ** ** ** 00
            Seven bytes of key then a 00 then seven more then 00 seven more
            then 00 last seven then 00.

THEORY OF OPERATION:
The text keys at 2000 are encrypted by the writer (trap 18) and stored
at 6740 in U-20.  The run chip in turn de-codes them by a reverse 
trap 18 and uses the encrypted keys from U-20 to produce the working key.
This way there is no clear text keys in U-7, U-20, or U-30 to be read
out or copied. 

Note: Use the 2000V24.RUN  in 2000 boards (0100-0106)
      and the 2100V24.RUN  chip in 2100 boards (018 and up).

P.S.  The RUN_MON0 & 8 chips work with version 2.4 ram image ONLY,
      and need the the encrypted seed keys at 6740 and serial # at 
      6235. Use LOADER24 to configure ram correctly for their use.


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