Free On-line Dictionary of Computing:
zilog z280
An enhanced version of the
Zilog Z80 with a 16 bit
architecture, introduced in July, 1987. It added an
MMU to
expand addressing to 16Mb, features for
multitasking, a 256
byte
cache, and a huge number of new op codes (giving a
total of over 2000!). Its internal clock runs at 2 or 4 times
the external clock (e.g. a 16MHz CPU with a 4MHz bus).
(1994-10-31)
