| 摘要 |
<p>PURPOSE: To provide the information processor which can select and mount a CPU having different data bus width. CONSTITUTION: This information processor is provided with a variable power source 142 which supplies a voltage corresponding to a CPU, and the feedback resistance Rv of a CPU module is connected to its feedback terminal. The resistance value of the feedback resistance Rv of each CPU module is made different and the output voltage VOUT matching the CPU can be supplied. The CPU module is provided with a terminal for generating a module decision signal for deciding the module and an extended RAM is provided with a terminal for generating a memory decision signal indicating whether or not the memory is extended. A memory controller and a bus control part perform bus control matching the CPU and memory that are mounted according to the module decision signal and memory decision signal.</p> |
