AT&T 6386E Hangs with RAM Option on EMM386 (75137)



The information in this article applies to:
    Microsoft MS-DOS operating system 5.0
    Microsoft MS-DOS operating system 5.0a
    Microsoft MS-DOS operating system 6.0
    Microsoft MS-DOS operating system 6.2
    Microsoft MS-DOS operating system 6.21
    Microsoft MS-DOS operating system 6.22

This article was previously published under Q75137

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.

Modification Type: Major Last Reviewed: 5/12/2003
Keywords: KB75137