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Debugger General Information
B
Network Boot
B-6
The ASCII string ÒBOOTÓ must be located within the
specified memory range
Your routine must pass a checksum test, which ensures that
this routine was really intended to receive control at power-
up
For complete details on how to use ROMboot, refer to the
Debugging Package for Motorola 68K CISC CPUs User's Manual.
Network Auto Boot is a software routine contained in the 177Bug
EPROMs that provides a mechanism for booting an operating
system using a network (local Ethernet interface) as the boot device.
The Network Auto Boot routine automatically scans for controllers
and devices in a specified sequence until a valid bootable device
containing a boot media is found or the list is exhausted. If a valid
bootable device is found, a boot from that device begins. The
controller scanning sequence goes from the lowest controller
Logical Unit Number (LUN) detected to the highest LUN detected.
At power-up, Network Boot is enabled, and providing the drive
and controller numbers encountered are valid, the following
message displays on the system console:
"Network Boot in progress... To abort hit <BREAK>"
Following this message there is a delay to allow you to abort the
Auto Boot process if you wish. Then the actual I/O begins: the
program pointed to within the volume ID of the media specified
loads into RAM and control passes to it. If, however, during this
time you want to gain control without Network Boot, you can pres
the:
BREAK key
Software ABORT switch
RESET switch
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