Amiga 3000 Systems

If you run the GG2 Bus+ in an A3000 system, you MUST run the Commodore
program Enforcer which is supplied for you 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.

On an A3000 system, depending on the speed of the PC card you are using, 
you may be able to run the GG2 Bus+ with "zero wait state" operation for 
a possible speed increase.  The default is for one wait state to be added
to each bus cycle.  To change this, you must turn off wait states using 
the  SwitchControl  program provided in the software package.  If you 
experience no data loss, system crashes, or other errors, you may consider
moving the wait state jumper on the GG2 Bus+ board from the "on" to the 
"off" setting to select "wait states off" as the default mode on power up
and after software reboots.

Note:  The wait state mode can be changed at any time through software 
by using the  SwitchControl  program.


If you have an older A3000 system with a "ROM tower", there are some 
things of which you should check for.  

First, you should check the "BUSTER" chip in your system; older machines
shipped with a Revision F chip (the part number will have a 13F somewhere
on it) rather than a newer Revision G chip (part number will have a 13G 
on it).  If you have a Revision F chip, it should be replaced or it may
cause bus problems. 

Second, some of the older machines seem to have faulty power connections 
to the PC bus.  Make sure that +12 Volts (pin B9), -12 Volts (pin B7), 
-5 Volts (pin B5), and +5 Volts (pins B3, B29, and D16) are all present. 
When the AT slot is viewed from the top, the right side is numbered 
consecutively B1-B31 on the longer socket, and D1-D18 on the shorter 
socket. If any of these voltages are not present, you should either
have your daughterboard serviced or fix it yourself.