SYSTEM EVALUATION BOARD FOR SINGLE CHIP MICROCOMPUTER

摘要

PURPOSE:To secure the working equivalent to a microcomputer of a mask ROM version being a final object by providing a CPU everchip that can be switched to the working equivalent to a specific kind with the value to be written into a register. CONSTITUTION:A register consisting of a ROM that can write and erase data internally is provided for the selection of a single one of various kinds of single chip microcomputers. A CPU everchip 3 which can be switched to the working equivalent to a specific kind with the value written into said register is added together with an I/O everchip 4 which simulates the I/O parts of each product, and a user program memory 2. In such a constitution, an SE board of a single kind is produced within the same product series and a desired mode is set so that the working equivalent to those of all single chip microcomputers being the final object.