Abstract: A processing device is provided with a disk loading port and a cassette or cartridge loading port both formed in a substantially common top face or surface of the device so that a CD ROM as well as a cartridge ROM may be loaded from the top. A main circuit board, in which a CPU, data processors and other circuits are assembled, is positioned so as to substantially underlie both the disk and cartridge loading ports and generally arranged in a plane parallel to the common top face. The disk operating unit is formed of two portions, one having a lower surface on which the cartridge unit may be detachably mounted, and the other having an elevated portion in which the disk loading port as well as a disk driving mechanism is installed.

Abstract: A processing device is provided with a disk coating port and a cassette or cartridge port both formed on a common top face or surface of the device sot hat a CD ROM as well as a cartridge ROM may be loaded from the top. A main circuit board, in which a CPU, data processors and other circuits are assembled, is positioned so as to underlie both the disk and cartridge loading ports and generally arranged in a plane parallel to the common top face. The disk operating unit is formed of two portions, one having a lower surface on which the cartridge unit may be detachably mounted, and the other having an elevated portion in which the disk loading port as well as a disk driving mechanism is installed.