(Source Iomega FaxBack document #: 2049 9/8/95
Windows 95 has 2 modes of operation Real(MSDOS) Mode and Protected Mode.
Real (MSDOS) Mode - Real mode operation is Windows 95 MSDOS
compatibility mode. This is the slower of the two modes. This mode is
used when devices are configured with MSDOS device drivers and
Protected Mode drivers are not available.
Protected Mode - Protect mode operation is the fastest mode of
operation under Windows 95, it is also the preferred mode of operation.
This mode uses built in 32-bit drivers, sometimes called Mini-Port drivers,
to support devices including: Hard Drive Controllers, Video Controllers,
SCSI Controllers, etc..
Any device that does not have built in support, or the manufacturer does not
supply protected mode drivers can use the Real Mode (current MSDOS) drivers.
Iomega has protected mode drivers available for the PC2, PC1600, PC1616,
PC800, PPA-3, and the Zip Zoom SCSI adapters.
Iomega Products and Protected Mode Operation
Windows 95 will support Iomega drives in protected mode if there is a protected
mode driver for the SCSI adapter. Windows 95 has built in protected mode
drivers for 3 Iomega SCSI adapters. The PC1600, the Zip Zoom SCSI
accelerator, and the PC2. Windows 95 will load the protect mode drivers
automatically if these adapters are installed previous to Windows 95. If the
protect mode drivers do not load automatically you will have to install and
configure these drivers manually. To add a supported SCSI adapter use the
Add New Hardware program in the Control Panel and follow the instructions later
in this document. The drives should work attached to any SCSI adapter that has
a built in protected mode driver.
If you use the protect mode drivers with Iomega drives, you will not be able to
run the DOS/Windows versions of Zip Tools or Iomega utilities. A Windows 95
version of the Iomega Tools is required (See Windows 95 Upgrade Kit below).
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