Browse Prior Art Database

Time Share Display APA Hardware Assist

IP.com Disclosure Number: IPCOM000060400D
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 2 page(s) / 65K

Publishing Venue

IBM

Related People

Baker, DC: AUTHOR [+3]

Abstract

By using display control software in a high function workstation which includes an all-points-addressable (APA) hardware display assist, lower costs, higher system performance and time sharing with the normal high function display subsystem are provided. In a high function workstation, which includes an APA hardware display assist, the display control software provides a general APA assist capability. This capability allows various applications and user software to access the APA hardware display assist functions. The system block diagram for such a system is shown in Fig. 1. The following advantages are realized by this design: 1. The APA hardware assist is time shared with the normal high function display subsystem (which usually requires a graphics program). 2.

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Time Share Display APA Hardware Assist

By using display control software in a high function workstation which includes an all-points-addressable (APA) hardware display assist, lower costs, higher system performance and time sharing with the normal high function display subsystem are provided. In a high function workstation, which includes an APA hardware display assist, the display control software provides a general APA assist capability. This capability allows various applications and user software to access the APA hardware display assist functions. The system block diagram for such a system is shown in Fig. 1. The following advantages are realized by this design: 1. The APA hardware assist is time shared with the normal high function display subsystem (which usually requires a graphics program). 2. A small software cost is the only additional expense associated with this capability. 3. Generally, there is higher system performance for APA results. For example, the display control software can provide a wire dot matrix printer APA assist capability. This capability allows the printer control software to share the display hardware assist function. The system block diagram for this system is shown in Fig. 2. The following advantages are provided by this example: 1. The display assist hardware is time shared with the printer control software with no additional hardware costs. 2. Higher printer performance for wire matrix and other APA printers is gained. 3. Bette...