Chapter 1 Introduction 7
Features
v Four independent RS-232 serial ports
v Transmission speeds up to 307.2 kbps
v Independent I/O addresses and independent/shared IRQ settings for
each of 4 serial ports
v Wide IRQ selection: 3, 4, 5, 6, 7, 9, 10, 11, 12, 15
v Supports Standard DOS COM1, COM2, COM3, and COM4
v Supports DOS/Windows 3.1, Windows 95/98, Windows NT (ICOM
Utility)
v Supports surge protection: 3000 V
DC
(PCL-849B/849+)
v LED indicators on each port indicate data flow
v On-board interrupt status register for greater throughput
v Complete RS-232 Modem-control signals
Specifications
· Bus interface: ISA
· Number of ports: 4
· I/O address: 0x0200 ~ 0x03F8
· IRQ: 3, 4, 5, 6, 7, 9, 10, 11, 12, 15
· Data bits: 5, 6, 7, 8
· Stop bits: 1, 1.5, 2
· Parity: none, even, odd
