6-10
Table 6-5
BootWare operation submenu
Menu item
Description
<1> Backup Full BootWare
Back up the entire BootWare.
<2> Restore Full BootWare
Restore the entire BootWare.
<3> Update BootWare By Serial
Upgrade BootWare through a serial port.
<4> Update BootWare By Ethernet
Upgrade BootWare through an Ethernet interface.
<0> Exit To Main Menu
Return to the main menu.
Storage Device Operation Submenu
Select
9
on the main menu to enter the storage device operation submenu:
==========================<DEVICE CONTROL>============================
|<1> Display All Available Nonvolatile Storage Device(s) |
|<2> Set The Operating Device |
|<3> Set The Default Boot Device |
|<0> Exit To Main Menu |
======================================================================
Enter your choice(0-3):
Items on this submenu are described in Table 6-6.
Table 6-6
Storage device operation submenu
Menu item
Description
<1> Display All Available Nonvolatile Storage Device(s)
Display all available storage devices.
<2> Set The Operating Device
Configure the operating device.
<3> Set The Default Boot Device
Configure the default boot device.
<0> Exit To Main Menu
Return to the main menu.
Upgrading BootWare and Applications Through a Serial Port
Introduction to Xmodem
Xmodem is used for upgrading BootWare and applications through a serial port.
Xmodem is a file transfer protocol that is widely used due to its simplicity and high performance.
Xmodem transfers files through a serial port. It supports two types of data packets (128 bytes and 1 KB),
two check methods (checksum and CRC), and error packet retransmission mechanism (generally the
maximum number of retransmission attempts is 10).
An Xmodem transmission procedure is completed by the cooperation of a receiving program and a
sending program. The receiving program sends a negotiation character to negotiate a packet check
method. After the negotiation, the sending program starts to transmit data packets. Upon receiving a
complete data packet, the receiving program checks the packet using the agreed method.
z
If the check succeeds, the receiving program sends an acknowledgement character and the
sending program proceeds to send another packet.
