Electronic apparatus having game and telephone functions

1. A game and a mobile phone type electronic apparatus comprising:

a game CPU which executes a game related process;

a phone CPU which executes a phone related process;

a play key to play a game;

an interruption key to initiate an interruption of said game;

a key register to which first information is set in response to an operation of said play key and second information is set in response to an operation of said interruption key;

wherein said game related process includes a game process to play said game when said first information is set into said key register and an interruption process to interrupt said game process when said second information is set into said key register; and

said phone related process includes a setting process to set said second information into said key register when an incoming phone call is detected.

2. A game and a mobile phone type electronic apparatus according to claim 1, wherein said game related process further includes a storing process to store current game data into a memory when said second information is set into said key register.

3. A game and a mobile phone type electronic apparatus according to claim 1, wherein said phone related process further includes a determination process to determine whether said game process is in an activated state or not, and said setting process sets said second information into said key register in response to a detection of said incoming phone call when a determination result of said determination process is affirmative.

4. A game and a mobile phone type electronic apparatus according to claim 1, further comprising a display which displays a game screen, wherein said phone related process further includes a modifying process to modify a tone of said game screen in response to a detection of said incoming phone call.

5. A game and a mobile phone type electronic apparatus according to claim 1, wherein said game related process is executed according to a game program downloaded from an outside source.

6. A game and a mobile phone type electronic apparatus according to claim 1, wherein said interruption process continues to pause said game process.

7. A game and a mobile phone type electronic apparatus according to claim 1, wherein said interruption process interrupts said game process when said second information is set into said key register in a state of said game process being activated.

8. A game and a mobile phone type electronic apparatus according to claim 7, wherein said interruption key combines with a resume key to initiate a resumption of said game, and said game related process further includes a canceling process to cancel a setting of said second information in association with execution of said interruption process, and a resumption process to resume said game process when said second information is set into said key register in a state of said game process being interrupted.