User`s manual

Conventional Solid State Disk

You can use numerous memory types to implement a Conventional Solid State Disk. Depending on

the devices used, you may implement read/write, read-only, or write-once-read-many type drives.

Advantages of using the Conventional SSD include:

• Storage capacity up to 2 MB total (EPROM only)

• Allows mixing of device types

• Atmel Flash allows read/write capability using standard DOS file commands

Disadvantages of using the Conventional SSD include:

• Requires external utility program to program 12 volt Flash, AMD 5 Volt Flash, or

EPROM.

• Requires external programmer to program EPROMs

The following memory devices or their equivalents may be used for a Conventional SSD. Access

times for all devices must be 150 ns or less, and all devices must be in 32-pin DIP packages.

• Atmel 29C010A or 29C040A

• Intel 28F010 or 28F020

• AMD 29F010, 29F040

• SRAM 128Kx8, 512Kx8

• NOVRAM (Dallas Semiconductor DS1645Y, DS1650Y)

• EPROM (27C010, 27C020, 27C040, 27C080)

Installing a Conventional SSD using Atmel 5-volt-only Flash

To install an SSD using Atmel Flash, follow this procedure:

• Apply power to the cpuModule and run Setup.

• If you are using the device in socket U1, set SSD Device in U1 to the appropriate

device type.

• If you are using the device in socket U2, set SSD Device in U2 to the appropriate

device type. Note: You must fill socket U1 with a conventional SSD before using

socket U2.

• If you wish to use a conventional SSD and a BIOS extension device, you must put

the conventional SSD in U1 and the BIOS extension device in U2.

•SetSSD Window to a value which will not conflict with other hardware or software.

• Save your changes and exit Setup.

• Turn off the cpuModule.

NOTE!

There are two restrictions on mixing memory devices for a Conven-

tional SSD:

If you use two SRAMs or two NOVRAMs, both devices must be the

same size.

The first SSD socket must be filled before the second socket is used.

NOTE!

The memory window selected for DOC must not be used by any other

program or hardware device. Make sure this window is not in use by

EMM386 or another memory manager, or an SSD, Ethernet card,

PCMCIA card, etc.