Epson Equity 4 Product Information Guide
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- Epson Equity 4 | Product Information Guide - Page 1
system board 512KB DRAM on main system board, expandable to 1MB Supports shadowing of system and video BIOS ROM into RAM 8KB of internal 487 upgrade available for 4SX/25 system Real-time clock, calendar, and CMOS RAM socketed on main system board with built-in connectors 4/1/93 EPSON Equity-l - Epson Equity 4 | Product Information Guide - Page 2
EPSON Equity 4SX/25, 4DX/33, and 4DX2/50 Keyboard Mouse Option slots Speaker Alternate VGA Mass Storage Horizontal mounts Vertical mount Height 16.5 inches (412 mm) 4.8 inches (120 mm) weight 16.7 lb (7.5 kg) with one diskette drive and one hard disk, without keyboard EPSON Equity-2 4/1/93 - Epson Equity 4 | Product Information Guide - Page 3
- FDD connector - HDD connector 10A U38 u37 TOSHIBA TC6933ES U3Q 1 Illmu 3 CN17CNIS CN15 CN14 CN13 CN12 CNll \ OrlnnlInn \ SIMM0, 4MB SIMM standard C II I " ----e-- CPU --1 I I 0E I I (PQFP) I I I I I U27 I I I I Ia II I I0 I I I 2 0 u35 u33 4/1/93 EPSON Equity-3 - Epson Equity 4 | Product Information Guide - Page 4
EPSON Equity 4SX/25, 4DX/33, and 4DX2/50 Major Subassemblies Serial Port Connectors (CN4 and CN5) main system option card connector pin 5 pin 1 pin 10 pin 6 pin 15 pin 11 VGA Port Connector Pin Assignments 6 7 8 1 9 1 Data 7 *Active low logic I18 1 Signal ground 1 EPSON Equity-4 4/1/93 - Epson Equity 4 | Product Information Guide - Page 5
IRQ no. IRQO IRQl iRQ3 Function Timer output Keyboard Serial port 2 EPSON Equity 4SX/25,4DX/33, and 4DX2/50 System I/O Address Map Hex address 2FF Serial port 2 300-31F Prototype card 1348'357 DCA 3278 360-36F PC network 378 - 37F Parallel printer port 1 380-38F SDLC, bisync 2 390- - Epson Equity 4 | Product Information Guide - Page 6
EPSON Equity 4SX/25, 4DX/33, and 4DX2/50 Jumper Settings J7 J5 ,J13 J15 Adapter, CMOS, and PQFP Jumper Settings Jumper number J5"' J6 JT"* J8 Jumper setting On Off' l-2' 2-3 On Off' l-2' Function Supports CGA adapters Supports monochrome, EGA, MCGA, and VGA adapters Enabtes the built-in VGA - Epson Equity 4 | Product Information Guide - Page 7
use in the computer. Check this table and your hard disk manual to find the correct type number(s) for the hard disk drive(s) run the SETUP program. Epson Hard Disk Drive Types Type number 24 39 34 Epson hard disk drive 80MB 120MB 240MB lnstallation/Support Tips 16 120 1612 14 EPSON Equity-7 - Epson Equity 4 | Product Information Guide - Page 8
Information Bulletins None. Product Support Bulletins None. Related Documentation TM-EQTY4 EPSON Equity Service Manual PGEQTY4 EPSON Equity Parts Price List SPKEQTY4 EPSON Equity Self Paced Kit 400195600 EPSON Equity Setup Guide 400195400 EPSON Equity User's Guide 400195ooo EPSON
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EPSON Equity 4SX/25,4DX/33, and 4DX2/50
power
hard disk
(SPEED) light
access light
diskette
drive
power
button
bay for hard disk, diskette,
tape, CD-ROM, or other drive
11
O/220
VAC switch
.
option card slots
power keyboard
inlet
port
I
&al
Serial
port1
port2
\
VGA
parallel
monitor
mouse
Pofl
poft
Port
Memory
ROM
Video RAM
Shadow RAM
Cache
Math
coprocessor
Clock/calendar
Controllers
Video
Computer Specifications
Diskette
CPU and Memory
32-bit CPU
4SX/25:
Intel
®
#36SX,
25 MHz
microprocessor; can be replaced with
optional
487SX/25
or
ODP486-25
OverDriv&
processor
4DX/33:
Intel
i486DX,
33 MHz
microprocessor; can be replaced with
optional
ODP486-33
OverDrive
processor
System speed
4DX2/50:
Intel
i486DX2,50
MHz
microprocessor
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
Hard disk
Interfaces
Monitor
Parallel
Serial
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.)
4MB RAM standard on a SIMM;
expandable using
lMB,
4MB,
or 16MB
SWIMS
to 32MB (maximum);
SlMMs
must
be
36-bit,
fast-page mode type with 70ns
(or faster) access speed
128KB system BIOS, video BIOS, and
SETUP code located in EPROM on main
system board
512KB DRAM on main system board,
expandable to
1MB
Supports shadowing of system and video
BIOS ROM into RAM
8KB
of internal cache (built into the
microprocessor)
On
4DX/33
and
4DX2/50
systems, math
coprocessor built into the microprocessor;
optional 487 upgrade available for
4SX/25
system
Real-time clock, calendar, and CMOS
RAM socketed on main system board with
built-in battery backup
Cirrus
®
VGA controller on main system
board; provides resolutions up to
1024 x 768
Controller on main system board supports
up to two diskette drives or one diskette
drive and one tape drive
Interface on main system board supports
up to two IDE hard disk drives with
built-in controllers
VGA interface built into main system
board for analog or multifrequency VGA
monitor;
15-pin,
D-shell connector
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
Two RS-232C, programmable,
asynchronous interfaces built into main
system board; 9-pin, D-shell connectors
4/1/93
EPSON Equity-l