Controller, control apparatus, and image-forming apparatus

A controller includes: a sub-control substrate that includes a first memory storing first control information to be used for controlling at least one of a plurality of modules of a processing apparatus, and controls the at least one of the plurality of modules by using the stored first control information while the controller is connected to the processing apparatus; and a main control substrate that includes a second memory and controls an operation of the sub-control substrate; and wherein: if a first operation is performed, the main control substrate acquires second control information that is to be used for controlling at least one of the plurality of modules and is determined from the first control information, and stores the acquired second control information in the second memory, when the controller is connected to the processing apparatus, and a second operation is performed, the main control substrate supplies the second control information stored in the second memory to another controller included in the processing apparatus, and stores the second control information in the another controller.