Acorn ALA32 RISC OS 3 Hardware Upgrade

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 Acorn ALA32 ROS3 Upgrade

 Acorn ALA32 RISC OS 3 Hardware Upgrade (top)

 Acorn ALA32 ROS3 hardware upgrade bottom

Acorn ALA32 RISC OS 3 Hardware Upgrade (bottom) 

This is the ROM carrier for Archimedes A305, A310, R140 and A440 to enable installation of the RISC OS 3 ROMs.
 
Here are the Fitting Instructions