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Zilog Z380
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Zilog Z380 : ウィキペディア英語版
Zilog Z380
The Z380 is a Zilog 16-bit/32-bit processor from 1994. It's Z80 compatible, but it was released much later than its competitors (the Intel 386 and Motorola 68020) and as a result was never able to gain any significant market leverage. On the other hand, the newer and faster eZ80 family has been more successful recently ().
The chip supports 16-bit processing with a clock speed of up to 20 MHz.
As it is derived from the Z180, it's a simpler, less efficient design and incompatible with Zilog's previous generation CPU, the Z280, with significantly fewer features:
* No pipelined execution
* No memory protection
* Lacks the I/O trap feature
* No on-chip cache
* Much simpler MMU
* Minimum of 4 clocks/instruction, against 1 (cache hit) or 2 (cache miss) on the Z280.
==References==

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抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Zilog Z380」の詳細全文を読む



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