ZiLOG Z80 User Manual

22
Step 8
Fit andsolderthe DIPswitch SW1.
Inorder to provide somecertaintyfor software itis strongly recommendedyou set
the base addressof your first PIOmoduleto 0x68. Themodule then occupies I/O
addresses 0x68to 0x6B. This is doneby setting theswitchesas illustrated below.
If you havea second PIOmodulethe recommended base address is 0x6C.

ZiLOG Z80 Specifications

General

Manufacturer	ZiLOG
Introduction Year	1976
Clock Speed	2.5 MHz to 20 MHz
Data Width	8-bit
Address Width	16-bit
Instruction Set	Z80
Transistor Count	8, 500
Package	40-pin DIP
Category	Microprocessor
Memory Address Space	64 KB
Voltage Supply	5V