| 释义 |
Zilog Z280
Zilog Z280An enhanced version of the Zilog Z80 with a 16 bitarchitecture, introduced in July, 1987. It added an MMU toexpand addressing to 16Mb, features for multitasking, a 256byte cache, and a huge number of new op codes (giving atotal of over 2000!). Its internal clock runs at 2 or 4 timesthe external clock (e.g. a 16MHz CPU with a 4MHz bus). |