Browse Prior Art Database

Reverse Roll Mode Subpaging

IP.com Disclosure Number: IPCOM000052395D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11

Publishing Venue

IBM

Related People

Authors:
Brady, T [+details]

Abstract

When subpaging in a shift register-type storage device operating in roll mode, subsequent references to subpages beyond the first can cause processor delays. This is because after the initial reference to a page, references within the page are generally to the subpages having higher addresses than the initially referenced subpage. Because a roll-mode paging device permits freedom in the order of storage of data in the device, the following two organizations of data are suggested. 1. Subpages are stored in reverse sequence on the device, but the data within the subpages is stored in forward sequence. 2. All data is stored in reverse sequence within a page.