ARCHIMEDES ARTHUR ROM FITTING INSTRUCTIONS
This leaflet tells you how to upgrade your Archimedes 300 Series to version 1.2 of the Arthur
operating system. It is not difficult to carry out the upgrade. All you need to do is to:
•
Remove the top cover of your Archimedes
•
Remove the system ROMs (four integrated circuits)
•
Carefully insert the four new ones.
The only tools you will need for this are a medium size Phillips screwdriver (cross-head) and a small
flat-bladed screwdriver or IC extraction tool. You will, however, need to take care to protect the
ROMs from static electricity as this can seriously damage them. However, if you are unhappy about
upgrading your Archimedes yourself then your Acorn supplier will be able to do it for you.
ATTENTION! Arthur 0.2 owners - please insert your old 0.2 ROMs into the protective foam
which carried your new 1.2 ROM set, and return the 0.2 ROMs to Acorn using the envelope and
reply paid label provided in this pack. This request does not apply to Arthur 0.3 owners.
REMOVING THE TOP COVER FROM THE COMPUTER CASE
1
Switch off your Archimedes and disconnect the unit from the mains by unplugging the power
supply cable.
2
Unplug any peripherals that are attached and remove any monitor or other loose items standing
on the top of the case.
3
Locate the screws holding the top cover in place. (See diagrams below.)
4
Remove the three screws at the top rear of the unit and the single screws on each side of the unit.
5
Slide the cover of the unit to the rear of the machine, tilt the back upwards and then slide it off.
You may need to `spring' the sides outwards slightly. You should remove the cover completely
and set it carefully to one side.
The position of the screws holding the top cover
1
