| 摘要 |
PURPOSE:To attain the processing at a high speed with a stack control system by providing especially a small stack to store an address having the special meaning when addressing said address in the stack. CONSTITUTION:An address (pointer) having the special meansing is not stored into a stack 1-1 but stored into constitution consisting of a stack pointer register 1-2 and a small stack 1-3. Furthermore, an address having the desired special meaning is set to the register 1-2 by the POP signal sent from a control part 2 controlled independently with no overhead. Thus, it is possible to trace a desired frame at a high speed to attain the processing at a high speed with a stack control system.
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