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Browse Prior Art Database

Hardware Boot Device

IP.com Disclosure Number: IPCOM000102118D
Original Publication Date: 1990-Oct-01
Included in the Prior Art Database: 2005-Mar-17
Document File: 2 page(s) / 68K

Publishing Venue

IBM

Related People

Gorga, KJ: AUTHOR [+2]

Abstract

The Hardware Boot Device (HBD) is a microcontroller-controlled device to restart a Personal Computer (or other device) in the event of a hang-up. The microcontroller does this if it has not received a command in a pre-set period of time. Hang-ups requiring rebooting occur most often in automated systems where an operator is not present to sense the hang-up and reboot the system, or in network installations on one of the unattended controlling machines. The Hardware Boot Device improves reliability by monitoring these unattended automated or network installations and insuring that they are operational.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 57% of the total text.

Hardware Boot Device

       The Hardware Boot Device (HBD) is a
microcontroller-controlled device to restart a Personal Computer (or
other device) in the event of a hang-up.  The microcontroller does
this if it has not received a command in a pre-set period of time.
Hang-ups requiring rebooting occur most often in automated systems
where an operator is not present to sense the hang-up and reboot the
system, or in network installations on one of the unattended
controlling machines.  The Hardware Boot Device improves reliability
by monitoring these unattended automated or network installations and
insuring that they are operational.  The Hardware Boot Device can be
used to provide a reliable installation sooner since the device can
allow an installation to be operational before all the "bugs" can be
fixed, or if the "bugs" are in areas beyond the users control
(operating systems or a host computer link- up).

      The HBD consists of a 8051 microcontroller, a serial interface,
power supply, and reboot power relay.  The 8051 communicates with the
PC over a RS-232 serial interface through its internal Universal Asyn
chronous Receiver/Transmitter.  It also has an internal timer for
counting the reset period time intervals.  It controls the Reboot
power relay through one of its output port pins and the timer
Light-Emitting Diode (LED) with another.  It flashes the LED at a
one-second interval to give a visual indication that it is operating
correctly.

     ...