Epson Equity 4+ User Manual

Page 1
EPSON Equity 4+
power (SPEED) light
power keyboard inlet port
hard disk access light
diskette drive
bay for hard disk, diskette drive, CD-ROM, tape drive, or other
option card slots
mo”s
poti
serial serial
I
POti’
pod2
\
;F”
power button
VGA monitor
poti
Memory
ROM
Video RAM
Shadow RAM
Cache
Math coprocessor
Clock/calendar

Controllers

Video
4MB RAM standard; expandable using
1MB, 4MB, or 16MB SIMMs to 36MB
(maximum); SIMMs 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 using 256k x 4-bit
DRAM ZIPs
Supports shadowing of system and video BIOS ROM into RAM
8KB of internal cache (built into the
microprocessor); expandable to 256KB
using 8KB or 32KB, 70ns SRAM DIP chips
On 4DX2/50 system, 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® Logic GD5422 VGA controller on
main system board; provides true color
resolutions up to 800 x 600 with 512KB
standard memory; with 1MB upgraded
memory, provides resolutions up to
1280 x 1024

Computer Specifications

CPU and Memory

32-bit CPU
System speed
4SX/25: Intel®
i-X,
microprocessor in PGA-type CPU socket; can be upgraded with optional 487SX/25 or ODP486-25 OverDrive™ processor
4DX2/50: Intel
&36DX2,50
microprocessor in PGA-type CPU socket
Fast and slow speeds available; fast speed depends on CPU (25 MHz or 50 MHz),
slow is simulated 8 MHz speed; speed selection through keyboard command; 0
wait state memory access at fast speed
To select slow speed, press the Ctrl, Alt,
and - keys simultaneously. To select fast speed, press the simultaneously. (Use the - or + key on the
numeric keypad.) Default system speed is
also user-selectable through SETUP
25 MHz
MHz
Ctrl,
Alt, and + keys
Diskette
Hard disk

Interfaces

Monitor
Parallel
Serial
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 bi­directional 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
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EPSON Equity 4+

Keyboard

Mouse
Option slots
Speaker
VGA feature connector

Mass Storage

Diskette drives
Hard disk drives
Keyboard
Program
PS/2 compatible keyboard interface built into main system board; num lock setting selectable through SETUP; 6-pin, mini DIN connector
PS/2 compatible mouse interface built into main system board; 6-pin, mini DIN
connector
Four 16-bit (or S-bit) I/O expansion slots, ISA compatible, 8 MHz bus speed; three
slots accommodate any size card, bottom slot can hold reduced size card (4.4 inch/110 mm)
Internal, piezo-electric speaker on main board
IBM compatible VGA pass-through interface built into main system board; 26-pin connector
Three half-height drives maximum configurable using the following:
5.25-inch, 1.2MB
3.5inch,
5.25inch, 360KB (double-density) capacity
3.5-inch, Dual
diskette drive: 3.5inch,
1.2MB
31Wnch form
half-height mounted horizontally Half-height tape drive, CD-ROM, or other storage
device;
(high-density) capacity
1.44MB
(high-density) capacity
720KB (double-density) capacity
factor hard disk
size;
the first mounted vertically, second
5Ginch
or
3Wnch
1.44MB
and
5.25-inch,
drtve(s),
up to
with mounting frames
Detachable, two-position height; 101 or 102 sculpted keys; countrydependent main
typewriter keyboard; numeric /cursor control keypad; four-key cursor control keypad; 12 function keys
Stored in ROM; accessible by pressing the
Delete
key at the SETUP prompt during boot

Video Modes

Mods
VGA
Extended,
512KB
memory required 640 x
Extended, 1 MB memory required
1
Resolution
1640X480
640X480
480
800X600 800X600

Power Supply

Input ranges Maximum outputs
Frequency
Option Slot Power Limits
Maximum current For each slot For all four slots
19Oto264VAC 1+5VDCatllAmps,
+12 VDC at 2.0 Amps,
-5
VDC
-12 VDC at 0.3 Amps 47 to 63 Hz
+5
volts
7
Amps
11 Amps
+12
1.5
2Amps
at 0.3 Amps,
v0ns
Amps 0.3 Amps

Environmental Requirements

Condition
I
Temperature
HumMt (non-
condensing) Attitude
Maximum wet bulb (20° C) Acoustical
noise
1
Operating
range range
41’ (5’
20% to 90%
-330 to 9,900
(-100 to 3,999 m) 68’
37.5 dB(A)
to
to
F
90’
32O
F
C)
1
Nonoperating
-4’
to
140’
(-20°
to
10% to 90% 10% to 90%
-330 to 39,699 ft330 to
R
(-loOto
104’F
(40° C) N/A N/A

Physical Characteristics

Width
Depth
Height Weight
14.8 inches (370 mm)
16.5 inches (412 mm)
4.8 inches (120 mm)
16.7 b (7.5 kg), with one diskette drive and one hard
disk.
but without kevboard
1
colors
1
16
1256
I32K 1
16
I256
-5 Volts and -12
0.3 Amps
1
Storage range
-4’to
F
60’
C)
(-20°
12,ooOm)
(-109 to 12,990 m)
134’F
(57O C)
140’ F
to
60’
39,699 fi
Votts
C)
EPSON Equity 4+ 2
10/1/93
Page 3

Main System Board Diagram

I
1
CN13
nnnnn
VGA feature connector
parallel port
I
serial port 2
EPSON Equity 4+
serial port 1 mouse keyboard
/
-
SUPPly
connectors
option card
riser board
connector
video memory
(512KB
optional)
SIMM sockets
-
-+
OSCl
c
1
5
I)
;
:
5 =
u41 U42 u43 u44 u45
U46
u47
,
u37
LI
L L
L;
L L L
z
-
=
=
u9
z
clc3-
diskette drive
connector
\
hard disk
connector
-
DIP switches
external cache sockets
>
dtive
I
processor in PGA socket speaker
battery connector
10/1/93
I
piezo-electric
jumpers J4-J9
EPSON Equity 4+ 3
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EPSON Equity 4+

Major Subassemblies

battery
CN3
I
diskette drive

Connector Pin Assignments

Parallel Port Connector
pin 13
hooooooeoooL
piti
(CNS)
I I
25
pin 1
pin 14
drive bays

Serial Port Connectors (CN9 and CN10)

Serial Port Connector Pin Assignments
Signal
Pin 1
Data carrier detect Receive data
2 3
Transmit data Data terminal ready
4 5
Not used
Pin
Signal
6
Data set ready
7
Request to send
8
Clear to send
9
Ring indicator

Keyboard Connector (CN5) and Mouse Connector (CN4)

Pin 4 5 6
pin 5
+
pin 1
pin 3
Signal
+5 VDC
(fused) Clock Reserved
pin 6
pin 4
+
pin 2
Although the keyboard and mouse connectors are physically
identical, they cannot be used interchangeably.
Keybmrd and Mouse Connector Pin Assignments
Pin
Signal
1
Data Resewed
2 3
Ground

VGA Port Connector (CN13)

Din 5
pin 1
Parallel Port Connector Pin Assignments
Pin
Signal
stnAx? 10
1
Data 0
2
Data
3 4 5 6 7 8 9
*Active low logic
1
Data
2
Data
3 Data 4 Data
5 16 Data
6 17 Data
7 18 Signal
Pin Signal
ACK’
11
Busy
12
PE 21
13
Select
14
Auto’
15
El-K-P
hit
Selectin*
ground
EPSON Equity 4+ 4
Pin Signal 19
Signal ground
20 Signal
Signal 22 Signal 23 Signal 24 Signal 25 Signal
ground ground ground ground ground ground
pin 10
pin 15
VGA Port Connector Pin Assignments
10/1/93
pin 6
pin 11
Page 5
EPSON Equity 4+

VGA Feature Connector (CN14)

pin
1
pin 2
VGA
Feafwe
‘Active low
~oooooooooooow,
/’
Connector Pin Assignments
togic

DMA Assignments

System I/O Address Map

pin 25
~~
pin 26
Reat-time
OAO - OBF OCO - ODF
OF0
OF1 OF8 - OFF
1FO -
lF8
200 - 207
-
27F
278
-
2DF
280 2El 2E2
and
2E3
-
2FF
2F8 300-31F
360 - 363
368-368
-
37F
378
-
38F
380
-
393
390
clock NM
1 lntermpt
controller 2,8259A
1 DMA controtter 2,8237A-5
Clear math coprocessor busy Reset math coprocessor
Math coprocessor
1 Harddisk
I Game
I/O
Parallel printer port 2 Alternate enhanced graphics
GPIB
(adapter 0) Data acquisition (adapter 0) Serial port 2 Prototype
1
PC network (low address)
1 PC network (high address)
Parallel printer port 1 SDLC, bisynchronous Cluster
card
non-maskable interru
adapter
2
t mask
Hardware Interrupts
10/1/93
82El A2El C2El E2El
I/O
addresses hex 000 to OFF are reserved for the system board
*
Hex 100 to 3FF are available on the system channel.
GPIB (adapter 4)
1 GPIB
(adapter 5)
GPIB (adapter 6)
GPIB
(adapter 7)
EPSON Equity 4+ 5
I/O.
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EPSON Equity 4+

System Memory Map

23FFFFF
Extended memory
0199909
System BIOS
(Shadow RAM, 64KB)
OOFOCKKI
OOEOOOO
99C7FFF
oocoooo
0088000 ooBoooo oOA9CUl9
oooooOO
Reserved for system BIOS (64KB)
Resewed for ROM on I/O cards
VGA BIOS ROM (Shadow, 32KB)
VGA Color Text
VGA Mono Text
VGA Graphics
Base memory
36MB
1MB
Hard Disk Drive Jumper Settings
I
Made1
Number
Conner
CP39194H
Conner
CP39174E C/D jumpered
Quantum
l
LPS249AT
If
CS (cable selection) is jumpered, the drive is a master if pin-28 is grounded
and a stave if pin-28 is not grounded.
Single DriveI
I
C/D
jumpered I CD
DS
jumpered’
Master
Drive
and DSP
C/D jumpered
DS
jumpers@ no jumpers’
jumpered I
1
Slave
no jumpers
no jumpers
Drive
DIP Switch Settings
Switch
l *
1
t*
2
*t
3 4 5
*
Factory setting
Setting
ON
OFF
ON OFF ON OFF ON’ Enable password secutfty feature Off ON’ Select color monitor OFF
Function
33 MHz CPU speed 25 MHz CPU soeed 25 MHz CPU speed
33 MHz
CPU
CPU present in PGA socket CPU absent from PGA socket
Disabte password security feature
Select monochrome monitor
l
* Factory set according to system type
speed

Processor Chips

The 4SX/25 system can be upgraded with an Intel OverDrive processor on the main system board to effectively double the internal clock speed of the computer’s microprocessor. Alternatively, the 4SX/25 accepts the Intel 487SX/25 microprocessor with built-m math coprocessor.
SIMM lnstallation

Jumper and DIP Switch Settings

Display Adapter and CPU Jumper Settings
size
Setting
A’ B
.*
A B
Function
Enable the built-in VGA adapter Disable the built-in VGA adapter so you can use a d&play adapter on an option card as your primary adapter Select DX2 CPU select sx CPU
**
Factory set according to system CPU
1 JS
lB
B
lB
1 J6
]B
B B
]B ]B
1
J7
jB jB
A A A A A
1 J8
B
lB
chips
Jumper
J3
J4
*
Factory setting
External Cache Jumper Settings
Cache
OKB’
32KB A A
64KB A
128KB
1256KB
l
Factory setting; change jumpers only if external cache
1 J9
IA
A A A
IB
are installed
The computer comes with 4MB of memory on the main
system board. To increase the amount of memory in the computer up to 36MB, install 36-bit, fast-page mode SIMMs that operate at an access speed of 70ns or faster, with a capacity of 1MB, 4MB, or 16MB.
The following table shows the possible SIMM configurations; do not install memory in any other configuration.
SIMM Configurations
I
SIMM1 0
1MB
4MB
1MB
4MB 4MB
16MB 1MB
4MB
I 16MB
l
Standard memory on the system board
**
SlMMs can occupy either socket
1
SIMM2
IO
lo IO
4MB
0
I16MB I16MB I 16MB
Total
i
4MB’
I5MB” 1
8MB”
9MB”
12MB
29MB” I21MB” 1
24MB”
I36MB
I
I
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EPSON Equity 4+

Video Memory

If the computer has 512KB of video memory, you can install
four 256K x 4 bit, 70ns, 20-pin DRAM ZIP (Zig-zag Inline
Package) chips to increase the video memory to 1MB. The
following table lists compatible DRAM ZIP chips.
Supported Video ZIP Chips
Manufacturer
GoldstaP
®
Micron
1 Samsung@
I
Part number
1
GM71
C4256AZ-70
1
MT4C42562-6,
1 KM44C25fXZ-6, KM44C256CZ-7
MT4C4256Z-7
1

Cache Memory

Additional cache memory can be installed in eight sockets in Bank 0 and Bank 1 on the main system board. The figure
below shows how the SRAM are distributed.
SRAM must, match type \ in banks
\\

Hard Disk Drive Types

The table below lists types of hard disk drives supported by the computer. Check this table and the hard disk manual to find the correct type number(s) for the hard disk drive(s) installed in the computer. Enter the type number(s) when you set the hard disk drive configuration in the SETUP program.
Hard Disk Drive Types
8KB or 32KB SRAM chips can be installed. Bank 0 must be filled before Bank 1. The SRAM type used for dirty RAM and
tag RAM must match the type installed in the banks. The table below shows the possible configurations.
Cache Memory Configuration
Actual size when formatted may be slightly different than the size listed on the
l
drive label
t
Hard disk drive supported in translate mode
$
Epson drives
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EPSON Equity 4+ 7
Page 8
EPSON Equity 4+
lnstallation / Support Tips

Mouse and Keyboard

Cl
When connecting the mouse and keyboard to the
computer, be careful to plug them into the proper ports. Although the ports are physically identical, they are not interchangeable, and damage may occur to the main system board if you plug the connectors into the wrong
ports.

Installing Diskette Drives

Cl
Make sure that the drive type has been correctly selected in the SETUP program.

Installing Hard Disk Drives

It is recommended that a 16-bit, AT-type hard disk controller be used if you are installing a drive that cannot use the embedded IDE interface. If you install a non-IDE hard disk drive and controller card, you need to use the SETUP program to disable the built-in IDE hard disk drive interface.
When installing a hard disk drive, see the hard disk drive types table on page 7 and use the SETUP program to select the correct type number for the drive. You can select a type number that matches the parameters for the drive or a type number with parameters having lesser values, as long as they do not exceed the maximum capacity (in MB) of the drive. If there is no match for the drive, you can select a user-defined drive type (47) and enter the drive’s exact parameters.

Software Problems

Cl
When installing a copy-protected software package, first
try the installation at fast speed. If this does not work properly, select slow speed by pressing the Ctrl and Alt keys and the - key on the numeric keypad
simultaneously. Try loading the program at slow speed
and then switching to fast speed, if possible.
Cl
When using a software package that uses a key disk as its
copy-protection method, try loading it at fast speed. If this does not work, load it at slow speed.

Password

Make sure that you do not forget the password you set up. If you do:
1.
Disable it by setting DIP switch 4 on the main system board to OFF.
2.
Then turn the computer on and off again.
3.
Set DIP switch 4 to ON to enable the password function.
4.
Run SETUP to enter a new password, if desired.
Users can enter a hot key designation in SETUP to secure
the system from unauthorized users. Once a password and hot key have been set, when the hot key is pressed, the keyboard and mouse lock until the user enters the password.

Booting Sequence

Cl
If you cannot boot the computer from the hard disk drive, make sure the booting sequence in the SETUP program is set to A, C. Then boot the computer from a system diskette in drive A.

Information Reference List

Engineering Change Notices
None.
Technical Information Bulletins
None.
Product Support Bulletins
None.

Related Documentation

TM-EQ4+
PL-EQ4+ Epson Equity 4+ Parts Price List
400264700
Epson Equity 4+ Service Manual
Epson Equity 4+ User’s Guide
EPSON Equity 4+ 8
10/1/93
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