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4.242 bytes |
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Document ID: GSMH-3BTMCN |
IBM PC - Windows 95 reassigns disabled COM & LPT ports
Applicable to: World-Wide
Symptom:
COM & LPT ports that are disabled in the Setup Utility of an IBM PC 300 or 700 Series system, to free resources for the installation of an ISA Legacy Adapter, may be reassigned and active when Windows 95 is loaded.
Problem Isolation Aids:
A COM port that is disabled from the Devices and I/O Ports menu selection in the systems Setup Utility, such as COM 2 (2F8h-IRQ 3), will be reassigned to COM 3, IRQ 3 when Windows95 is loaded.
The Parallel Port (LPT) disabled in the same manner may be reassigned to IRQ 5 and active when Windows 95 is loaded.
FIX:
When installing an ISA Legacy Adapter that requires a specific resource assignment, ensure that the following steps are performed:
1. Power on the system and press F1 during the memory count to access the systems Setup Utility.
2. From the Main Menu, select Devices and I/O Ports.
3. Disable the device that is assigned the resource required by the ISA Legacy Adapter being installed.
4. Return to the Main Menu and select ISA Legacy Resources.
5. Alter the fields under each of the menu selections in ISA Legacy Resources from "Available" to "Not Available" that correspond to the resources required by the ISA Legacy adapter. For example, if the ISA adapter requires I/O address range 220-240h, DMA channel 7, and IRQ 9, set each of these selections to "Not Available."
6. Save the changes and exit the Setup Utility.
For additional information on configuring the system for ISA, PCI, or Plug n Play adapters, refer to the users guide shipped with the system and the documentation that accompanies the adapter.
For a quick reference: 
Windows 95 is a trademark of the Microsoft Corporation.
SAS KEYWORDS:
PSY2 6875 D/T6875 D/T6885
D/T6876 D/T6886 6885 6876
6886 PSY2ADPT PSY2OEM PSY2PART
PSY2BRD PSY2DIAG IBMPC PSY2ERR
PC 750 PC 730 PSVP PC 330
PC 300 PC 350 D/T65XX D/T6571
D/T6573 D/T6581 D/T6583 D/T6585
D/T6575 6571 6573 6581
6583 6575 6585 6576
6586 D/T6576 D/T6586 19XX
D/T6577 D/T6587 D/T6877 D/T6887
D/T6560 D/T6260 D/T6598 D/T6589
57439 UNCLASSIFIED PC 365 PC 340
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Search Keywords |
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Hint Category |
Communications, Retain, Windows 95 | |
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Date Created |
27-11-96 | |
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Last Updated |
17-04-98 | |
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Revision Date |
13-04-99 | |
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Brand |
IBM PC | |
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Product Family |
PC 140, PC 330, PC 340, PC 350, PC 360, PC 365, PC 730, PC 750 | |
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Machine Type |
6260, 6560, 6571, 6575, 6576, 6577, 6581, 6585, 6586, 6587, 6589, 6598, 6877, 6887, 6573, 6585, 6875, 8876, 6885, 6886 | |
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Model |
Various | |
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TypeModel |
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Retain Tip (if applicable) |
H135271 | |
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Reverse Doclinks |