Abstract: A vertical frame construction of a cabinet or cabinets for electronic and electric equipments, which is favorable in workability for mounting of internal equipments and capable of ensuring a multiplicity of equipment mounting surfaces. The frame construction arranges vertical frame legs 1 of hollow, cross sectional shape at corners, the vertical frame legs 1 having a hollow, cross sectional shape comprising first shaped sides 4 bent inside a box for containing electronic equipments, from outer edge portions 3, second shaped sides 5 formed by bending inner ends of the first shaped sides 4 in a direction away from a corner 2, and recessed spaces E, F defined between the first shaped sides and the second shaped sides. Also, equipment mounting holes may be provided to permit work from a side of outer walls of the cabinet, and an extent of projection of joint fittings may be reduced by providing an additional joint fitting mounting side.

Abstract: An object of the present invention is to realize a palette control circuit which generates inconspicuous noise using simple circuitry and without reducing processing efficiency. A palette control circuit comprises a palette 5 used for color conversion, a selector 4 that is connected to the address input of the palette and selects image memory output or address data for use in accessing the palette, a holding circuit 6 for temporarily holding the output of the palette 5, and a control circuit 7 for issuing an input select instruction to the selector 4, access control signals to the palette 5, and a data holding instruction to the holding circuit 6. For displaying normal image memory, the control circuit 7 instructs the selector 4 to select image memory output and allows the holding circuit 6 to pass palette output as it is.

Abstract: A data processing system, which includes a CD-ROM drive, addresses data in a CD-ROM and commands the CD-ROM drive to read the data. The data processing system selects one of a plurality of control programs corresponding to a format of the data in the CD-ROM used, and controls the CD-ROM drive to read the data addressed by using the control programs. Further, the data processing system processes the data read in a accordance with the data format and stores the data processed in a memory.