Abstract: In an information processing device 30 having engaged in a detachable manner with, for processing, via an external bus 37, 47 in a second data width, a first game cartridge 20 housing first memory 22 in a first data width, or a second game cartridge 40 being partially different in shape from the first game cartridge 20 and housing second memory 42 in the second data width, a shape discriminator 35 discriminates between the first and second game cartridges 20, 40, and a central processing unit accesses the second memory 42 in a multiplex bus mode and the first memory 22 in a normal mode.

Abstract: A paper feeding device has a first guide portion through which paper having a preselected width and thickness is introduced, a second guide portion for receiving the paper introduced into the first guide portion, and at least one connecting guide portion disposed between the first and second guide portions. A paper feeding roller mechanism feeds the paper from the first guide portion to the second guide portion through the connecting guide portion of the paper feeding guide. The paper feeding roller mechanism has a clamping portion for clamping the paper when the paper is fed to the second guide portion. The clamping portion of the paper feeding roller mechanism is disposed generally parallel to the connecting guide portion of the paper feeding guide.