数据总线及数据器(RAM)是8位字宽,程序总线及程序存储器(ROM)是12位字宽。这种概念强调位、字节和寄存器操作,CPU能在指令读取和执行过程的重叠中高速工作,即当一条指令执行时,下一条指令已...
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程序存储器存放控制流程序。
程序存储器的导址逻辑是由寄存器来实现的,这个寄存器叫程序计数器。
This program memory addressing logic is handled by a register referred to as a program counter.
存储程序系统的关键部分存在于中央处理机,呼叫存储器和程序存储器之中。
It is in the central processor the call store and the program store that the key elements of the stored program system really lie.
And if the test is true, it will change the value of this program counter to point to some other place in the memory, some other point in that sequence of instructions, and you'll keep processing.
如果测试结果为真,它会改变程序计数器的结果去,指向记忆存储器里的其他地方,指令序列里的其他地方,然后你会继续这个过程。
That program counter points to some location in memory typically to the first instruction in the sequence.
程序计数器指示存储器当中的某些位置,尤其是指示序列中的第一个指令。
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