68040 Processor
The 68040 is a fast and highly
integrated microprocessor with clock
speeds of either 25 Mhz or 33 Mhz.
The 68040 contains 1.2 million
transistors, more than any other
microprocessor in its class. This
incredible number of transistors is
required because the 68040 is
actually four chips in one -- a central
processing unit, a floating point
unit, a paged memory management
unit, and 8 kilobytes of cache

The system clock speed is identical
to the CPU bus speed, providing
an average execution time per
instruction of 1.3 clock cycles.

There are two 4-kilobyte memory
caches, one for data, the other
for instructions, along with burst
mode read and write-back caching
for improved data transistors.

56001 DSP
Built into the NeXTstation's design
is the 56001 DSP, a 25 Mhz digital
signal processor. With 25K of static
RAM cache, upgradable to 96 K,
the DSP is dedicated to the task of
handling digital signals -- such as
sound -- at exceptional speeds.

The DSP is capable of generating
compact-dic-quality sound:
44.1 kHz sampling rate with 16-bit
resolution and full stereo.

Other uses for the DSP range from receiving still and video images to
a variety of other data transmission
and acquisition activities.

Network Support
Built-in networking, both thin and
twisted-pair Ethernet ports are
designed into all NeXT™ computers.

Network software and administrative
tools are preloaded on all hard drives
to simplify connecting to virtually
any network, with no additional cards
to purchase, install, or configure.

DMA Architecture
NeXT computers were designed to
handle the most complex tasks
efficiently. Rather than emulating
a traditional PC or workstation
architecture, NeXT systems used
a direct memory access (DMA)
architecture similiar to that of main-
fram computers for off-loading
I/O functions from the CPU to the
peripherial controller (PC) chip to
maximize system throughput.

RAM Configurations
NeXTstation Color computers are
currently available in 16, or 32 MB
RAM configurations.

To support the fast memory transfer
capability of the Turbo Memory
Controller (TMC), NeXTstations utilize very-high speed (70-nanosecond)
72-pin DRAM SIMMS.

RAM upgrades can be added
incrementally in two-SIMM
increments up to 32 MB of RAM.

When denser chips (16 MB)
become available, NeXTstations can
be upgraded up to 128 MB.

Parity memory is also an option, and
can be ordered on a select number
of 16 MB configurations.

SCSI is an expandable high-
performance interface for connecting
NeXTstations to hard disks and
other peripherials, such as the NeXT
Color Printer, NeXT CD-ROM Drive,
scanners, and other devices. Up
to seven SCSI peripherials (including
the internal hard disk) can be

SCSI data transfer rates are up to
4.8 MBytes per second (SCSI-I

A SCSI-II-type connector was used
on NeXTstations to provide high
data reliability in CPU-to-peripherial
Sound I/O
NeXT computers have been designed
to accept and process sound.

Using the built-in microphone in the
MegaPixel Display™ or an external
microphone, voice messages can be
easily added to electronic mail or
used to anotate applications.

Based on the industry's first object-
oriented system software, NeXTstep
offers an elegant grahpical user
interface and one of the most
productive development environ-
ments available today

NeXT's operating system is based
on the Mach UNIX kernel developed
at Carnegie Mellon University, which
features shared memory, fast inter-
process communication, multitasking,
and network support.

NeXT's UNIX is compatible with
UNIXX 4.3 BSD (Berkeley Software

Display Postscript
NeXT offers a unified imaging model
Display PostScript, for imaging on
both the screen and printer.

Bundled Software
Each NeXTstation ships with an unprecedented amount of end-user
and development software including:

End-User Applications
Workspace Manager™
Digital Webster™ (Webster's Ninth
New Collegiate Dictionary™ and
Collegiate® Thesaurus)
Digital Librarian™
Mathematica® -- for higher
education customers only
Preview for PostScript®
System Administration Applications

NeXTstep Release 2.2 Extended
also Includes:

End-User Applications
Oxford® Dictionary of Quotations
William Shakespeare: The
Complete Works (for Digital
TEX™ Document Processing
System (Radical Eye Software)

Developer Tools
Interface Builder™
NeXT Compiler for the Objective-C
C++ Language Compiler
Objective C Class Definitions
56001 DSP Tools
GNU Emacs
GNU Debugger
BUG-56™ Debugger (Ariel)
Malloc Debugger
PostScript Tools
Application Kit™
Music Kit™
Sound Kit™
On-line technical documentation

Created by Stone Design's Create on 6/4/1998