Browse Prior Art Database

Data Types for Use With a Support Processor

IP.com Disclosure Number: IPCOM000120674D
Original Publication Date: 1991-May-01
Included in the Prior Art Database: 2005-Apr-02
Document File: 1 page(s) / 47K

Publishing Venue

IBM

Related People

Bordovsky, JS: AUTHOR [+4]

Abstract

Disclosed is a method for displaying scan string (a sequential ordering of bits that represent the state of the machine under test) or memory data in a format that is readable to the user.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 70% of the total text.

Data Types for Use With a Support Processor

      Disclosed is a method for displaying scan string (a sequential
ordering of bits that represent the state of the machine under test)
or memory data in a format that is readable to the user.

      Data coming from scan strings and memory can contain actual
program code.  Memory is sometimes used to store text or string
information.  Scan strings usually contain register, latch and array
data.  A way was needed to decode the information contained in scan
strings and memory into any format the user desired.

      To solve this problem, eight data-types were defined. Routines
to decode each data-type were then written.  These routines take all
the data to be decoded and turn it into a binary scan string.  Then
the data is converted into the format of one of the eight data-types.
All display methods access these routines by recognizing the one
character type indicators shown below:
      a = ASCII
      b = binary
      d = decimal
      e = EBCDIC
      f = float
      i = instruction decode
      o = octal
      x = hex

      The "float" is the IEEE single or double precision number
format.  It is a double word (8 byte) format.  The "instruction
decode" disassembles 32 bits of data into its assembly language
mnemonic.

      This allows the support processor to display scan string and
memory in any of the formats.  It can be done by using a very simple
comman...