NEC RELEASES NEW IMAGE SERIES 

Tseng Labs' ET4000/W32 Provides Maximum Performance for New Video
Subsystem

Newtown, Pennsylvania, February 23, 1993 - NEC Technologies, the pioneer in
the design and development of local bus video architecture, today
introduced the Image Series of 486-based PCs featuring ImageVideo, the
company's second generation of local bus video technology. At the heart of
ImageVideo is Tseng Labs (NASDAQ/NMS:TSNG) video controllers. Image Video
integrates Tseng's ET4000/W32 graphics accelerator to solve the video
bottleneck in managing data within a GUI environment, resulting in
lightning fast performance in DOS and Windows environments . Referred to
by NEC as a video subsystem, Image Video fully integrates 32-bit local
bus, Tseng's graphics accelerator and true color into a total graphics
solution greatly enhancing the overall video performance of the system.

According to Jack Tseng, President of Tseng Labs, "As a partner to NEC in
developing local bus technology, we are gratified by the outstanding
performance of the new Image Series, which is the fastest video subsystem
yet for NEC. NEC has always been on the leading edge of systems graphics
and was instrumental in promoting local bus by releasing the first local
bus PC. Tseng's DRAM based ET4000/W32 provides NEC with maximum
performance at a reasonable price." Jon Newman, Vice President of Product
Planning and Management at NEC Technologies, Inc. noted, "Our long-term,
solid working relationship with Tseng Labs was instrumental in NEC
becoming the first PC vendor to feature a local bus video design.
Engineers at NEC's Massachusetts research facilities are relying on the
strong performance of the new ET4000NV32 video controller to be an
integral component of NEC's second generation local bus systems."

As the ET4000/W32 is directly mated to the local bus it attains local burst
transfers of up to 25MB/Sec accelerating memory to screen transfers by up
to 400% over standard ISA bus operation. Video data within the frame
buffer is accessed at rates exceeding 91 MB/Sec permitting even faster CPU
access for high resolution/high refresh rate modes. Complimenting this, a
robust accelerator feature set further enhances Windows operations. Bit
Block Transfer (Bit Blt) speeds the commonplace movements of objects and
windows on the screen substantially. Pixel Amplification assists text
printing and area fill operations by up to ten times. All 256 rastor
operations provided by Windows 3.1 are included in hardware, freeing up
the CPU from time consuming data manipulation. Three MMU's (memory
management units) supervise these operations for optimum performance.
Additionally these MMU's control a memory aperture allowing linear video
memory access for fast image data transfer. This combination of local bus
and hardware acceleration provides a snappy Windows environment.

Additionally the ImageVideo sub system supports refresh rates of up to
72Hz. NEC ImageSync automatically and transparently optimizes refresh
rates on NEC FG series monitors to simplify user installation and provide
clear, flicker-free images. All of these features combined with color
depths of up to 24 bits (16.8 Million colors) allow extended applications
such as manipulation of photo-realistic images in desktop publishing and
photo CD.

According to Joe Curley, Director of Marketing with Tseng Labs, "the newest
members of NEC's ImageSeries of PCs shows that the company remains at the
forefront of local bus video development the video feature set provides a
powerful solution to the graphics problems posed by the user interfaces
available today at a very reasonable price."

Tseng Labs, headquartered in Newtown, Pennsylvania, is a manufacturer of
custom VLSI graphics chips which serve the microcomputer industry. Formed
in 1983, Tseng Labs has consistently proven to be a supplier of high
performance graphics products.

Tseng Labs, 6 Terry Dr, Newtown, PA 18940
215-968-0502;  fax: 215-860-7713

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