Browse Prior Art Database

Emulation of Data Processor Display Terminal by Word Processing System Interface Handling of Processor Interrupt

IP.com Disclosure Number: IPCOM000043119D
Original Publication Date: 1984-Jul-01
Included in the Prior Art Database: 2005-Feb-04
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Hunt, GT: AUTHOR [+2]

Abstract

In the present-day text or word-processing environment, the operator often requires access to a host data processor through a low cost data link for data processing and records capability. An original solution to this problem was to utilize both a text processor and a separate data display terminal, such as the IBM 3278, which was compatible with the data processor. However, with the integration of data processing and text processing capability into an overall office systems environment, the field is advancing in the direction of utilizing the display terminal associated with the text processing system as an output terminal for the host data processor.

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Emulation of Data Processor Display Terminal by Word Processing System Interface Handling of Processor Interrupt

In the present-day text or word-processing environment, the operator often requires access to a host data processor through a low cost data link for data processing and records capability. An original solution to this problem was to utilize both a text processor and a separate data display terminal, such as the IBM 3278, which was compatible with the data processor. However, with the integration of data processing and text processing capability into an overall office systems environment, the field is advancing in the direction of utilizing the display terminal associated with the text processing system as an output terminal for the host data processor. In such a system, operator interactive capability is provided for switching from a text processing session to a data processing session wherein the text processor emulates a data processing display terminal. In an emulation on the word or text processor, it is customary for the word processor to be linked to a port in a control and multiplexing unit for the host data processor. Such a linkage is an asynchronous serial one. Since both sides of the linkage at the interface are asynchronous in operation, the handling of the updating of status bits presented a problem. In specific operations, the possibility exists that the text processor software may attempt to read a status bit at the interface while the s...