Browse Prior Art Database

ESP Chip Type Record

IP.com Disclosure Number: IPCOM000107860D
Original Publication Date: 1992-Mar-01
Included in the Prior Art Database: 2005-Mar-22
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Bordovsky, JS: AUTHOR [+4]

Abstract

Disclosed is a method used in support processor software to reduce duplication of data, prevent maintenance of multiple copies of the same data, and increase support processor performance.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 65% of the total text.

ESP Chip Type Record

       Disclosed is a method used in support processor software
to reduce duplication of data, prevent maintenance of multiple copies
of the same data, and increase support processor performance.

      Data about a chip consists of length of scan strings, device
names, array names, locations of devices in their scan string, how to
access array data via the scan strings, as well as aliases for
devices which allow concatenation of devices to form new devices.

      Trying to support multiple chips of the same type in the
support processor (SP) could lead to massive amounts of data being
needlessly duplicated.  Each copy of the duplicated data would have
to be maintained at the current level of the chip, and SP performance
would be both impaired by the volume of data and improved by direct
access to the data at run time.

      A support processor can support multiple chips of the same type
without having to duplicate the chip configuration information.

      SP commands allow the user to define one or more types of chips
and then define a system that is made up of one or more of each
type of chip.  For example, the scan string information for a data
cache chip can be described using the chip-add-type (cat),
chip-add-scan- string (cass) and chip-add-device (cad) commands.
     cat  dcache                     /* define a new chip type */
     cass dcache long 2100           /* define the long...