an adapter board connects to the Gary socket - the Gary chip is replaced onto the board
in case of Big Agnus (8372), jumpers JP8 and JP2 ahve to be connected with a wire to the Gary adaptor
battery-backed real time clock with auto-recharge battery
write protection jumper for the clock
RAM configurations:
0.5 MB ChipRAM + 0 MB FastRAM, if the left mouse button and the joystick's Fire button are pressed simultaneously while turning on the Amiga (expansion off)
0.5 MB ChipRAM + 1.8 MB FastRAM, if the joystick's Fire button is pressed while turning on the Amiga
1.0 MB ChipRAM + 0 MB FastRAM, if the left mouse button is pressed while turning on the Amiga
1.0 MB ChipRAM + 1.5MB FastRAM, if no keys are pressed when the Amiga is turned on
0.5 MB ChipRAM + 0.5 MB SlowRAM, if 2M Jumper on Gary board is shorted to GND and the joystick's Fire button are pressed while turning on the Amiga