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Epson Equity 4 Product Information Manual
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Epson Equity 4 Product Information Manual

Epson Equity 4 Product Information Manual

Product information guide
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Download this manual See also: User Manual, Setup Manual
hard disk
power
access light
(SPEED) light
bay for hard disk, diskette,
tape, CD-ROM, or other drive
11 O/220 VAC switch
.
power keyboard
inlet
mouse

Computer Specifications

CPU and Memory
32-bit CPU
microprocessor; can be replaced with
optional 487SX/25 or ODP486-25
microprocessor; can be replaced with
optional ODP486-33 OverDrive processor
microprocessor
System speed
High and low speeds available; high speed
depends on CPU (25 MHZ, 33 MHz, or
50 MHz), low speed is simulated 8 MHz
speed; speed selection through keyboard
command; 0 wait state memory access at
highspeed
diskette
power
drive
button
option card slots
VGA
\
monitor
parallel
®
EPSON Equity 4SX/25,4DX/33, and 4DX2/50
To select low speed, press the Ctrl, Alt,
and - keys simultaneously. To select
high speed, press the Ctrl, Alt, and + keys
simultaneously. (Use the - or + key on the
numeric keypad.)
Memory
4MB RAM standard on a SIMM;
expandable using lMB, 4MB, or 16MB
be 36-bit, fast-page mode type with 70ns
(or faster) access speed
ROM
128KB system BIOS, video BIOS, and
SETUP code located in EPROM on main
system board
Video RAM
512KB DRAM on main system board,
expandable to 1MB
Shadow RAM
Supports shadowing of system and video
BIOS ROM into RAM
Cache
microprocessor)
Math
On 4DX/33 and 4DX2/50 systems, math
coprocessor
coprocessor built into the microprocessor;
optional 487 upgrade available for 4SX/25
system
Clock/calendar
Real-time clock, calendar, and CMOS
RAM socketed on main system board with
built-in battery backup
Controllers
Video
Cirrus
board; provides resolutions up to
1024 x 768
Controller on main system board supports
Diskette
up to two diskette drives or one diskette
drive and one tape drive
Hard disk
Interface on main system board supports
up to two IDE hard disk drives with
built-in controllers
Interfaces
Monitor
VGA interface built into main system
board for analog or multifrequency VGA
monitor; 15-pin, D-shell connector
Parallel
One standard 8-bit parallel, uni- or bi-
directional interface built into main system
board; I/O address selectable through
SETUP; 25-pin, D-shell connector
Serial
Two RS-232C, programmable,
asynchronous interfaces built into main
system board; 9-pin, D-shell connectors
4/1/93
®
VGA controller on main system
EPSON Equity-l

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Summary of Contents for Epson Equity 4

  • Page 1: Computer Specifications

    EPSON Equity 4SX/25,4DX/33, and 4DX2/50 To select low speed, press the Ctrl, Alt, hard disk and - keys simultaneously. To select diskette power power access light drive button (SPEED) light high speed, press the Ctrl, Alt, and + keys simultaneously. (Use the - or + key on the numeric keypad.)
  • Page 2 EPSON Equity 4SX/25, 4DX/33, and 4DX2/50 Keyboard PS/2 compatible keyboard interface built Video Modes into main system board; num lock setting pode pesolunon 1 colors selectable through SETUP; 6-pin, mini DIN 1 Memory required 1 connector 1512KB p4o~460 512KB 640X460...
  • Page 3 EPSON Equity 4SX/25,4DX/33, and 4DX2/50 Main System Board Diagram keyboard mouse parallel serial 2 serial 1 VGA video ELI - d power supply connectors VGA feature connector s t a n d a r d - 512KB option board CPU chip...

  • Page 4: Major Subassemblies

    EPSON Equity 4SX/25, 4DX/33, and 4DX2/50 Serial Port Connectors (CN4 and CN5) Major Subassemblies main system option card connector board board (option board riser card) power supply Serial Port Connector Pin Assignments Keyboard Connector (CN3) and Mouse Connector (CN2) pin 5...

  • Page 5: System I/O Address Map

    EPSON Equity 4SX/25,4DX/33, and 4DX2/50 VGA Feature Connector (CN8) System I/O Address Map Hex address Assigned device pin 25 pin 1 000-OlF DMA controller 1,8237A-5 ‘Yeeaeeeeoeaaw 020-03F interrupt controller 1, 8259A, master ,feooooooooooo~, 040 - 05F Timer, 8254-2 pin 2 ’...

  • Page 6: Jumper Settings

    EPSON Equity 4SX/25, 4DX/33, and 4DX2/50 If the computer’s microprocessor is a FQFP type, it is surface- Jumper Settings mounted on the main system board. To add an OverDrive processor, install it in the empty OverDrive socket and disable the original microprocessor by setting jumper J23 to position 2-3.

  • Page 7: Video Memory

    Epsondrives installed in the computer. You need to enter the type If the computer has an Epson SOMB, 12OMB, or 24OMB hard number(s) when you set the hard disk drive configuration in disk drive, select the appropriate type number from the table the SETUP program.

  • Page 8: Information Reference List

    EPSON Equity 4SX/25, 4DX/33, and 4DX2/50 Installing Hard Disk Drives Information Reference List Ll It is recommended that a X-bit, AT-type hard disk controller be used if you are installing a drive that cannot Engineering Change Notices use the embedded IDE interface. If you install a non-IDE None.

This manual is also suitable for:

Equity 4sx/25Equity 4dx/33Equity 4dx2/50

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