4850 EP  (250-5143)             Features                Faxback Doc. # 1092

The Tandy 4850 EP delivers IBM PC/AT compatibility in a high-performance
environment. It features the 50 MHz INTEL 486 DX2 CPU (central processing
unit) with a 32-bit bus. You can run popular software packages with the
industry-standard architecture (ISA) expansion options. Many advanced features
are standard on the Tandy 4850 EP. These features and many options are listed
below.

*50 MHz INTEL 486 DX2 CPU

Provides superior performance with an internal processing power of 50 MHz
while maintaining an external CPU bus speed of 25 MHz. The microprocessor also
features an on-chip floating-point unit (FPU) for built-in math coprocessing
functionality.

*8 KB Internal Cache

Features an integrated 8 KB cache (CACHE485). This cache is organized in a
4-way set-associative design that greatly enhances the performance of many
common applications. CACHE485 used a write-through caching scheme to ensure
data reliability.

*Built-in math coprocessor

The on-chip floating-point unit (FPU) operates in parallel with the arithmetic
and logic unit and provides arithmetic instructions for a variety of numeric
data types.

*Phoenix BIOS and Industry Standard Architecture (ISA)

Ensures compatibility with software and hardware built to the IBM standard for
PC/AT. Three 16-bit ISA expansion slots operate at a standard 8.33 MHz speed.

*MS-DOS, Novell, UNIX, XENIX, and MS-OS/2 compatibility.

Lets you choose the operating system that best supports your needs.

*101-key Enhanced Keyboard.

Makes typing easy by featuring auto-repeat to reduce the number of multiple
keystrokes.

*High-capacity, 3 1/2" diskette drive.

Enables you to read and write both standard-density (720 KB) and high-density
(1.44 MB), 3 1/2" diskettes.

*Built-in 16-bit IDE (SmartDrive) hard drive interface.

Enables you to quickly add hard disk storage. SmartDrives use an integrated
controller to provide maximum performance and compatibility at a lower cost
than other drive/controller combinations. The IDE interface supports up to two
SmartDrives.

*Three Drive Bays

Enable you to install hard drives, diskette drives, tape cartridge systems, or
CD-ROM drives.

*3 1/2" 120 MB SmartDrive

Provides 120 MB of additional disk data storage (hard drive version only).

*Built-in Super VGA video port

Provides superior performance and maintains the high resolution and colors of
Video Electronics Standard Association (VESA) specification Super Video
Graphics Array (VGA). Super VGA features 16-color, non-interlaced 1024 x 768
and 800 x 600 graphics modes, and 132-column text modes. By upgrading the
video memory from 512 KB to 1 MB (using an option upgrade kit), you can
display 256-color, non-interlaced 1024 x 768 video. The Super VGA video system
is compatible with VGA (640 X 480), MCGA, EGA, CGA, MDA, and Hercules
standards. Super VGA video requires a VGA analog monitor (color or
monochrome).

*4 MB system memory, expandable to 32 MB

Enables you to run a variety of software. Eight SIMM sockets are located on
the main logic board for memory installation.

*Built-in mouse port (PS/2-style)

Leaves a 16-bit expansion slot open for an additional adapter board.

*Built-in serial and parallel ports

Two serial ports let you connect a serial mouse, an external modem, or other
serial device. You can also connect a parallel printer or other parallel
device, using the bidirectional parallel port.

OPTIONS

* multiple-frequency monitor
* diskette drives, including 2.88 MB
* hard drives
* tape drive
* CD-ROM drive
* additional system memory, expandable to 32 MB
* additional video memory, expandable to 1 MB
* ISA expansion adapters


(smm 08/05/93)