Enabling Internal Modem on Zenith Laptop (76749)
The information in this article applies to:
• Microsoft MS-DOS operating system 5.0
This article was previously published under Q76749
After installing Microsoft MS-DOS 5 Upgrade on a Zenith laptop with an
internal modem, the modem may cease to function. The modem must be
turned on using the original Zenith DOS MACHINE command as follows:
machine modem on
To extend battery life, power is not supplied to the internal modem
until it is turned on with the MACHINE MODEM ON command. You may need
to copy the MACHINE.COM file from the OLD_DOS.1 directory or the
original Zenith DOS disks and use the SETVER command to report the
original Zenith DOS version to MACHINE.COM.
For more information on the SETVER command, see pages 561-564 of
version 5.0 "Microsoft MS-DOS User's Guide and Reference."
The product included here is manufactured by vendors independent of
Microsoft; we make no warranty, implied or otherwise, regarding this
product's performance or reliability.
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