Browse Prior Art Database

Os/2 Extended Edition Design for Oem Enablement of Dft

IP.com Disclosure Number: IPCOM000119274D
Original Publication Date: 1991-Jan-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

DuBois, LL: AUTHOR [+2]

Abstract

Disclosed is the method used by the IBM OS/2* Extended Edition Communications Manager DFT Initialization component to provide support for DFT adapters made by non-IBM (OEM) manufacturers. This modification was made with a minimum amount of effort, with no code changes to the underlying DFT Data Link Control (DFTDLC) layer which communicates with the DFT adapter hardware, and with no additional configuration questions for the user.

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This is the abbreviated version, containing approximately 54% of the total text.

Os/2 Extended Edition Design for Oem Enablement of Dft

      Disclosed is the method used by the IBM OS/2* Extended
Edition Communications Manager DFT Initialization component to
provide support for DFT adapters made by non-IBM (OEM) manufacturers.
This modification was made with a minimum amount of effort, with no
code changes to the underlying DFT Data Link Control (DFTDLC) layer
which communicates with the DFT adapter hardware, and with no
additional configuration questions for the user.

      The support for OEM enablement of the DFTDLC was designed to be
transparent to the user, AND transparent to the DFTDLC code itself.
This involved making the following design and code changes:
-    Require non-IBM manufacturers who want to support the IBM OS/2
Extended Edition Communication Manager to write a device driver which
performs functions similar to IBM's DFT device driver.  This OEM
device driver is placed into the config.sys file in place of the IBM
DFT device driver.
-    Repackage the code which is hardware-specific into a single
Dynamic Link Library (DLL) file.  This file is used in conjunction
with IBM DFT adapters and the IBM DFT device driver.
-    Create a new DLL file which is used in conjunction with non-IBM
DFT adapters.  This DLL has the same entry points as the IBM DLL
above; however, instead of containing hardware-specific instructions
that relate to IBM DFT adapter hardware, the entry points instead
issue DosDevIOCtl calls to the OEM dev...