Firmware And Software - Bay Networks Remote Annex 4000 Hardware Installation Manual

Firmware and Software

Firmware
ROM Monitor
Asynchronous Ports
Each asynchronous port has seven active pins, plus ground, to
provide the following standard RS232 asynchronous signals for
modem and flow control:
Transmit Data (TxD, transmitted).
Receive Data (RxD, received).
Data Terminal Ready (DTR, transmitted).
Clear To Send (CTS, received).
Data Set Ready (DSR, received).
Request to Send (RTS, transmitted).
Carrier Detect (DCD, received).
The Remote Annex 4000's ROM contains firmware for performing
power-up self-tests and loading operational code. A non-volatile
EEPROM stores the configuration parameters.
The Remote Annex 4000 can have a boot image in Flash ROM
(optional) or can receive its image from a device on the network. This
image is used to boot the Remote Annex 4000.
When the Remote Annex 4000 is first booted, the console displays the
ROM monitor prompt. The ROM monitor is an interactive command
interpreter that is used to define configuration parameters. All of the
information that the Remote Annex 4000 needs to boot an operational
image is defined using the ROM monitor and its command set. ROM
Monitor commands are issued from a console terminal connected to
the console port on the Remote Annex 4000's rear panel.
Remote Annex 4000 Hardware Installation Guide
Chapter 1 Introduction
1-7