Providing indirect data addressing in an input/output processing system where the indirect data address list is non-contiguous

Providing indirect data addressing in an input/output processing system where the indirect data address list is non-contiguous

A computer program product for processing input/output (I/O) data is provided for performing a method that includes receiving a transport control word (TCW) including an indirect data address including a starting location of a transport mode indirect data address list (TIDAL) of storage addresses, t...

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Hauptverfasser: Huang Catherine C, Kalos Matthew J, Sittmann, III Gustav E, Yudenfriend Harry M, Casper Daniel F, Njoku Ugochukwu C, Bendyk Mark P, Riedy Dale F, Flanagan John R
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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creator Huang Catherine C
Kalos Matthew J
Sittmann, III Gustav E
Yudenfriend Harry M
Casper Daniel F
Njoku Ugochukwu C
Bendyk Mark P
Riedy Dale F
Flanagan John R
description A computer program product for processing input/output (I/O) data is provided for performing a method that includes receiving a transport control word (TCW) including an indirect data address including a starting location of a transport mode indirect data address list (TIDAL) of storage addresses, the TIDAL including a plurality of entries configured as transport mode indirect data address words (TIDAWs). The method includes accessing an entry of the TIDAL, which includes: 1) based on the entry of the TIDAL indicating that the address is a data address, gathering data from a data storage location corresponding to the data address, and accessing a next entry of the TIDAL, and 2) based on the entry of the TIDAL indicating that the address is an address of a next entry of the TIDAL, obtaining the next entry of the TIDAL from another storage location that is located non-contiguously to the entry storage location.
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subjects CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
title Providing indirect data addressing in an input/output processing system where the indirect data address list is non-contiguous
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