I have disassembled various versions of the GI-Buster
and have noticed how cleverly the I.D. number is concealed
in RAM.  However, (undocumented) SETUP 9 causes the U7 ID
number and the U20 ID number (the auto-update ID) to be 
displayed.  Also, some versions of this software display the
auto-update ID number with SETUP 1.  To conceal the ID number
in SETUP 9, and, in SETUP 1 for those versions that have the ID
number implemented in SETUP 1, apply the following patches:
-----------------------------------------------------------
EPROM relative    old   new     comment
     2BF0          65    EB     Upon extracting ID at RAM loc
     2BF1          90    B0     6590, display ROM area instead
------------------------------------------------------------
The above patch will cause FF's to be displayed in SETUP 9
and SETUP 1 (if implemented).  To display the ID of your choice,
just stash the ID to be displayed forward starting at location
2BB0.  For example, to display ID # 01020304, make the following
changes to GI-BUST0.run or GI-BUST8.run:
---------------------------------------------------------------
EPROM relative    old   new      comment
    2BB0           FF    01      Cause ID number of 01020304
    2BB1           FF    02      to be displayed by SETUP 9
    2BB2           FF    03      (and SETUP 1 for other versions)
    2BB3           FF    04      in the GI-Buster.
---------------------------------------------------------------
The above patches make the GI-Buster more useable as a clone
device (ID not easily determined by user or any other asshole
that tries to figure out auto-update ID).