| 摘要 |
<p>PURPOSE:To update an instruction RAM in the normal operation with a simple circuitry. CONSTITUTION:The circuit consists of a normal operation address register 12, updating address register 11, selector 13 selecting two types of address registers, and selector 14 switching the RAM output and the NOP code. In updating the RAM, the register 12 holds the former value and the value of the updating address register 11 is selected as the RAM address. As an instruction, the NOP code is selected instead of the RAM output.</p> |
