Browse Prior Art Database

Flexible Transparent Field Metering

IP.com Disclosure Number: IPCOM000051239D
Original Publication Date: 1982-Aug-01
Included in the Prior Art Database: 2005-Feb-10
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Hooten, JA: AUTHOR [+2]

Abstract

A circuit card containing system interface logic, a microprocessor, and a low power memory operable with battery backup is directly attached to the common system bus of a word processing or data processing host system. This circuit is used for field metering to count and store the number of preselected events which take place in the host system over a period of time.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 69% of the total text.

Page 1 of 1

Flexible Transparent Field Metering

A circuit card containing system interface logic, a microprocessor, and a low power memory operable with battery backup is directly attached to the common system bus of a word processing or data processing host system. This circuit is used for field metering to count and store the number of preselected events which take place in the host system over a period of time.

The field meter card responds to two unique I/O (input/output) commands from the host system. The first I/O command is reserved for use by the system software. An output to this I/O address is a command to the field meter to increment a counter which is maintained in the low power memory. The data byte associated with this command provides the address of the counter in the low power memory.

The second I/O command is used by utility software which is loaded into the host system to initialize, read, or test the field meter card memory. When the card is installed into the host system, the utility software is executed to test and initialize all counters through this second I/O command. At appropriate intervals, the utility software is loaded to read the counter contents and store them on a data storage medium, display them on a visual display screen, or print the contents in the form of a hard copy.

The system software may be configured so that any software identifiable event can be counted with a single I/O output command. The events counted are not limited to mechani...