Amiga 2000 and 2500 systems

If you have an older A2000 or A2500 system with a motherboard revision 
number lower than 6, you may have troubles with the GG2-Bus+ due to 
bus noise.  It is suggested that you contact your dealer and upgrade 
your motherboard.  If this is too expensive, you may be able to find 
out about some unorthodox "hacker" fixes that might help you.

If your A2000 or A2500 system includes a 68030 or 68040 accelerator card, 
you MUST run the Commodore program Enforcer supplied on the GG2 Bus+
software disk.  In addition to providing memory protection from errant 
programs, Enforcer turns off the CPU data cache whenever the GG2 Bus+ 
board is accessed.  If the data cache is not turned off during GG2 Bus+
accesses, "ghost" data is read instead of real data.  Should you not 
wish to be notified of errant programs causing "hits", run Enforcer 
with the "quiet" option.  If your machine has a 68020-based accelerator
card, it must also have a 68851 Memory Management Unit, or else Enforcer
will not work.  The 68EC030-based is manufactured without an MMU.  If you
cannot run Enforcer, you must turn off the CPU data cache completely by
using CPU or other utilitity when using the GG2 Bus+.

Note that the information above also applies to regular Commodore 
Bridgeboards, which require 1-2 Megabytes of Autoconfig space.  Also, if 
your A2000 or A2500 system includes an accelerator card, you must always
use the GG2 Bus+ with wait states enabled (this is the default).  The wait
state jumper on the board should remain in the "on" position, just as the
board was shipped.