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Zilog Z800
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==More successful Z80 derivatives (from Zilog)== Apart from the successful [[Zilog Z180]] (developed largely by [[Hitachi]]) and Zilog Z182 other attempts were made to extend the Z80 architecture, the [[32-bit]] [[Zilog Z380|Z380]] (introduced 1994) was a commercial disappointment except for some specific telecom applications. On the other hand, the fast [[24-bit]] [[Zilog eZ80|eZ80]] (introduced 2001) has been both commercially successful and won engineering awards. Unlike the Z800, Z280, and Z380, the eZ80 does not introduce many new instructions or addressing modes, in comparison to the original Z80, but instead primarily extends the 16-bit registers of the Z80 to 24 bits wide. This enables it to reach 256 times as much memory, and adds a fully pipelined execution unit that executes Z80 opcodes 4Γ as fast as the original.
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