Epson Equity 4 Product Support Bulletin
EPSON
AMERICA,
INC.
Product Support Bulletin
EPSON
Subject:
Common Questions and Answers for the Epson Equity 4SX/25, 4DX/33
and 4DX2/50 Computers
Date: 04/02/93
Page(s): 1 of 8
GENERAL
Q1.
A.
What an? the Epson Equity 4SX/25, 4DX/33 and 4DX2/50 computers?
The Epson 4SX/25, 4DX/33 and 4DX2/50 represent Epson’s new family of
entry-level computer products. Along with an affordable price, the new
Equity 4 series offers Intel™ i486™ processing power and upgrade
solutions for a wide range of computing applications. In addition to the
performance that these systems offer, users will appreciate the
convenience of a small footprint, complete system integration and preloaded software. Key features include:
PSB No: S-0155
Originator: SLS
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Choice of Intel 486SX/25, 486DX/33 or 486DX2/50 processor
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Built-in math coprocessor (40X/33 and 4DX2/50); math coprocessor
support in the 4SX/25 model
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Intel OverDriveTM Support (4SX/25 and 4DX/33)
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Zero Insertion Force (ZIF) socket for easy processor upgrades
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8KB internal cache (built-in CPU)
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Small-footprint case incorporates
- four ISA 16-bit option slots
- two externally accessible drive bays and one internal drive bay
- built-in Super VGA video adapter
- built-in serial, bi-directional parallel, mouse and keyboard ports
- built-in floppy and IDE hard drive controller/interface
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Choice of 120MB or 240MB hard disk drive
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4MB of RAM; upgradeable to 32MB via SlMMs
PSB No: S-0155
Page: 2 of 8
Q1.
A.
What an? the Epson Equity 4SX/25, 4DX/33 and 4DX2/50 computers?
(continued)
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512KB video memory; upgradeable to 1MB providing True Color
support
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Alternate VGA feature connector for additional graphics capabilities
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System and video BIOS can be relocated in shadow RAM for
increased system performance
0.
ROM based system SETUP
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Password security
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Virus warning abilities included in BIOS
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Bundled with MS-DOS® 5.0*, Microsoft® WindowsTM 3.1 and a mouse
(MS-DOS and Windows are pre-loaded on hard drive models)
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MS-DOS 6.0 will be included when available
Q2.
A.
what is the target market for this computer?
The Epson Equity 4SX/25, 4DX/33 and 4DX2/50 computers are targeted
at the following markets.
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Home office and small-business users seeking maximum performance
at today’s low prices.
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Work at home users who need an efficient and cost-effective system
that’s compatible with all their business software.
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Businesses in search of a low-cost network node that can handle
current and future applications.
Q3. What interfaces and controllers are integrated on the motherboard?
A.
The Epson Equity 4SX/25, 4DX/33 and 4DX2/50 computers come
standard with a built-in IDE hard disk drive interface, a floppy disk drive
controller, a super VGA video adapter, two serial interfaces, a bidirectional parallel interface, a PS/2 style mouse port and a PS/2 style
keyboard port all integrated on the main system board (motherboard).
PSB No: S-0155
Page: 3 of 8
Q4.
A.
CPU
Q5.
A.
What levels of password security are provided with the Epson Equity
4SX/25, 4DX/33 and 4DX2/50 computers?
The Equity 4 series of computers offer two levels of password security to
insure that unauthorized users do not change the system’s SETUP
configuration or obtain access to the system.
- Password security to obtain system access
- Password security to access SETUP menus
What microprocessors are being offered with the Epson Equity 4 series
computers?
The Epson Equity 4SX/25 comes standard with an Intel i486SX
microprocessor (CPU) running at 25MHz. The Epson 4DX/33 comes
standard with an Intel i486DX CPU running at 33MHz. The Epson Equity
4DX2/50 comes standard with an Intel DX2/50 CPU running at 50MHz.
Common features of the different microprocessors include backward
compatibility with the 8088, 8086, 80286, and 80386 CPUs and a built-in
8KB cache. For system flexibility, the built-in CPU cache can be disabled
via SETUP.
Q6.
A.
The i486DX and DX2/50 CPUs contains an on-chip numeric coprocessor
to increase the speed of floating point operations. This coprocessor is
backward compatible with the 387DX and 387SX math coprocessors and
complies to ANSI/IEEE standard 754-1985.
What processor upgrades are available in the Epson Equity 4SX/25,
4DX,33 and 4DX2/50 computers?
The Epson Equity 4SX/25 computer can be upgraded by installing an Intel
i487SX or Intel Overdrive CPU in the processor socket. Both of these
CPUs improve system performance by adding a numeric coprocessor to
speed up floating point calculations. The Intel Overdrive CPU doubles
the processor’s internal speed to further increase system performance.
The Epson Equity 4DX/33 computer can be upgraded by installing an Intel
Overdrive CPU in the processor socket. Like the Intel Overdrive CPU for
the 4SX/25, the Intel Overdrive CPU for the 4DX/33 also doubles the
processor’s internal speed to further increase system performance.
Please note that the Equity 4SX/25, 4DX/33 and 4DX2/50 computers do
not support the Weitek math co-processor.
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