CHAPTER 3 – Jumper Setting
38
PC-686 (CPCI)-LV User’s Manual
RS-485 Setting
3.3.3. I/O addresses and instructions
The table below lists I/O addresses for use as COM2.
I/O address
DLAB
Read/Write
Register
W
Transmitter holding Register
THR
0
R
Receiver buffer Register
RBR
02F8H
1
W
Divisor latch Register (LSB)
DLL
1
W
Divisor latch Register (MSB)
DLM
02F9H
0
W
Interrupt enable Register
IER
02FAH
X
R
Interrupt ID Register
IIR
02FBH
X
W
Line control Register
LCR
02FCH
X
W
Modem Control Register
MCR
02FDH
X
R
Line status Register
LSR
02FEH
X
R
Modem Status Register
MSR
02FFH
X
R/W
Scratch Register
SCR
Содержание PC-686CPCI-LV
Страница 2: ......
Страница 8: ...Table of Contents iv PC 686 CPCI LV User s Manual ...
Страница 18: ...CHAPTER 1 Introduction 10 PC 686 CPCI LV User s Manual 1 7 Connector Jumper Location ...
Страница 20: ...CHAPTER 1 Introduction 12 PC 686 CPCI LV User s Manual ...
Страница 50: ...CHAPTER 3 Jumper Setting 42 PC 686 CPCI LV User s Manual ...
Страница 72: ...CHAPTER 5 Software Utilities 64 PC 686 CPCI LV User s Manual ...
Страница 117: ......
Страница 118: ...A 46 427 LZS2451 021030 010606 ...