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New twists on the Z80

Posted: 01 Sep 2000     Print Version  Bookmark and Share

Keywords:8-bit Z80  microcontroller  Z80  Zilog  processor 

Introduced by ZiLOG in the early '70s, the Z80 was an impressive processor for its time. The original Z80 (a 2MHz part) was a souped-up version of the then-popular Intel 8080 processor. While compatible with the 8080, the Z80 offered many new features: new instructions, new addressing modes, two index registers, faster execution, high performance peripheral chips, and a clever interrupt scheme. Soon, Z80s were available in higher speed grades (4MHz and 6MHz). For many years, the Z80 was the king of 8-bit processors.

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