PURPOSE: To use a videodata memory in the most suitable way so as to use the memory effectively by making it possible to arbitrarily set a screen range and a character data range in the same videodata memory from a CPU.
CONSTITUTION: A ROM3 is housed into a freely attachable/detachable cartridge and the like, and a program data for the sake of controlling a television game machine and the like and data and character necessary for carrying out a program are housed therein. Such constitution is provided as to most suitably set a back ground screen data range, an animation character data range, and a background character data range into ranges 7a, 7b of a videodata memory VRAM7 via animation/stationary picture address control circuits 22, 24 by the program of the ROM3. Degree of freedom in making a program is increased while the VRAM7 can be effectively utilized thereby.
SAIKAI SATOSHI
TAKAHASHI TOYOFUMI
MUKAI TAKAO
RICOH KK
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