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Q75137: AT&T 6386E Hangs with RAM Option on EMM386

Article: Q75137
Product(s): Microsoft Disk Operating System
Version(s): MS-DOS:5.0,5.0a,6.0,6.2,6.21,6.22
Operating System(s): 
Keyword(s): 
Last Modified: 26-NOV-1999

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The information in this article applies to:

- Microsoft MS-DOS operating system versions 5.0, 5.0a, 6.0, 6.2, 6.21, 6.22 
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SYMPTOMS
========

An expanded memory page frame set to DC00 or higher on a AT&T 6386E causes
the system to stop responding (hang). For example, the following DEVICE=
statement hangs the system.

  DEVICE=EMM386.EXE m8 RAM

CAUSE
=====

The AT&T 6386E has a ROM option at address E800 that is used during system
operations. Setting a page frame to DC00 or higher overlaps with the ROM option,
resulting in a hang.

MORE INFORMATION
================

On some systems, you can set a page frame to DC00 or higher. For example,
machines with AMI BIOS use the entire E000:EFFF area for the ROM setup program.
To set a page frame at E000, make sure that the ROM option is never needed
during normal system operation.

The product included here is manufactured by AT&T, a vendor independent of
Microsoft; we make no warranty, implied or otherwise, regarding this product's
performance or reliability.


Additional query words: 6.22 5.00 5.00a 6.00 6.20

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Keywords          :  
Technology        : kbMSDOSSearch kbMSDOS621 kbMSDOS622 kbMSDOS620 kbMSDOS600 kbMSDOS500 kbMSDOS500a
Version           : MS-DOS:5.0,5.0a,6.0,6.2,6.21,6.22

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