5 links
Thomas Scherrer Z80-Family Official Support Page
z80.info
Goal: collect and share information and good ideas on: Z80, Z180, Z280, Z380, CPUs; hardware, software, utilities, programming, Assembly, FAQ, support.
Zilog Z80 Microprocessor Family
cpu-world.com
Information, photos, identification, links to pinouts, support and second-source chips. [CPU-World]
ZiLOG, Inc.
zilog.com
Designs, makes Z80 series microprocessors, DSPs; and other embedded logic: microcontrollers, microprocessors, infrared, IrDA, communications, TV subsystems. California, USA.