Upgrading the Cyberstorm PPC from 68040 to 68060 CPU

The Cyberstorm PPC Turbocard from 1997 for the Amiga 3000/4000 comes with two CPU's in different configurations:

• 1. CPU: Motorola 68040 or 68060
• 2. CPU: PowerPC 604e @ 150 / 180 / 200 / 233 MHz

In this tutorial we want to describe how to change the Motorola 68040 with a 68060 CPU.

Overview: Cyberstorm PPC with a 68040 and 180 MHz PowerPC CPU

Step by step Guide:

• Install (copy) 68060.library and 68040_dummy.library to Libs:
• Rename or delete the original 68040.library in Libs:
• Rename the 68040_dummy.library to 68040.library
• Shut down the Amiga 4000
• Unplug the Cyberstorm PPC card from the mainboard
• Remove the heatsink and cooler of the PowerPC CPU and also the memory modules
  (for better accessibility)
• Extract the 68040 CPU carefully with this tool; don't use a screwdriver!!! (be aware that this is a BGA socket => very vulnerable)

Intel Chip Remover tool

• Now you can see the voltage selector jumper in the center of the socket

5V (68040) and 3.3V (68060) voltage selector jumper

• Desolder the jumper from 5V, move and solder it to 3.3V

• Locate the system jumpers on the board (see the Overview picture above), and
  move jumper 5 from 68040 to 68060 position.

• Install the 68060 CPU into the socket

• If you don't plan to overclock the new installed CPU it's not mandatory to deploy a heatsink with or without a fan, but I highly recommend it, to extend the lifetime of the chip.

Further informations, especially if you want to overclock the Motorola CPU: here