Epson Equity 386-20 Product Information Guide

huddlsk

indicator

light

I

,

ksy

lock

k

contml

kn&

I

1

Computer Specifications

I

CPU
CPU

ckxk

Bus spd
DMACkCk

NPX
NPX Speed
DRAM

BIOS

heumce

FDO

HDO

KeVboard

Lock
Switches

VOkJflW
ORAM

Expansion

P-supp)y

Input

Frequcmcy
Pcww Consumption 115 VAC

Surge

Cunemi

I-

SwenQlh

Insulelion Raircurco

switch

W3%-20.

20 MHz (0 wait states) / 6 MHz (1 wait state);

Hy: sdtwam - conWolkd swttch

6 MHz
4 MHz fixed
60367 - 20. PGA (68 pins). socket only
20 MHz fixed

Two

One
One

one vdeo

One FDO
Two HDD connectors

5.25-inch

3.5 - inch 1 .U

5.25-Inch half-height

On!hhJlltpSnel

Audii

PGA (132 pins), socketed

fad

1 MB minimum. 16 MB maximum on the memow board

272% - 20 chips.

mid

(9 pins, D - shell)

psmlbl

(25 pins, D

adapmf

connectcw

ESDI

ST508

1.2 MS

SO MB. ESDI. 1 :I
40 MB, ST506. 1 :l

101 -key enhanced keyboard

Reset

Clock speed select (20
Monitor select (cdor/monochrome)

speaker volume control

On the

mein wntrol bonrd

16 SIMM socketa

ApPlkaMe to both [256xtxSI and

115 VAC

230 VAC

230 VAC

115 VAC
230 VAC

25M ohm mm (500 VDC) (AC - FG. AC - secondary)

1 M ohm more (250 VDC) (SG - FG)

drive slot

1

1

I

socketai

-

shell)

(up to 2 FOOs supported)

for #

A

MB/720

KB. 5.25’ 360 KB for #

or

full-heighl
Interteave
inttive

MHz/6

Min.

92 V

Max

132 V

Min. 1% V Max. 2.5 A

Max.

265 V

49 - 61 HZ

Approxmately 60 W
Appralamat.ely

42 A 0 - P (0.5 second more)

AC t .% kV (1 min.) (AC - FG. AC ­AC 1.25 kV (1 min.) (AC - FG)
AC 3.75 kV (1 min.) (AC -

MHz)

60 w

disk

IOI

[lMxtxSI

Max. 4 A

witchable on-the

8

seconds)

secoaby)

EQUITY 386/20

WERNING

(non-

(HDD)

41 l F to

5’c

conch&g)

zo%tow%

ad-

0.2 G

0.5 G (HDD)

$9

(<

0 to 3.000 m ASL

T-

Hwidhy

Muhurm wel &lb

VibMCtl

Shock (no HDD)

Shock (HDD) 1 G

AhtIude

to

then 10

25

nwn

%‘F

35’c

o-w Hz)

t-m)

NoN-~nru3

-4-F

to

14O.F

-2o’c to 60-c

10% tQ so%

@%mJ-

1 G (no HOD)

0.5 G (HDD)

30

(lees

than

10

tF,

mm o-w Hz)

-300

lo 3.600 m ASL

Ins)

CPU

There are no DIP switches on the Equity
there is a MONITOR SELECT switch, a CPU SPEED switch
and a VOLUME CONTROL on the front of the unit in the
lower left-hand corner.

Monitor select

Color, composite, EGA, and VGA monitors

The CPU SPEED switch selects between 8 MHz and 20 MHz.

When the computer is running at 8 MM the power light is

red and at 20

MHz

the light is green.

ST-

*dw-

3 G (no HDO)

(lees

300
(c

speed SWWh

M/20.

-40’F to

-4o’c to

then 10 me)

25 mm O-W Hz)

-300

However,

14O.F
6o’C

to 3.600 m

ASL

Equity Series Computers

413189

The VOLUME CONTROL controls the internal speaker’s
loudness. Turn it to the right to increase the volume and to

the left to decrease the volume.

EQ386/20 - 1

EQUITY

386/20

Connector Pin Assignments

Parallel Port Connector

P/N

No.

1
2
3 DATA1

4 DATA2

5 DATA3
6

7 DATA5

8

9

10

11

12

13

14

15

16

17

18

19
20

21

22

23
24

SIGML NAME

-

STROBE

DATA0

DATA4
DATA6

DATA7

-

ACK
+ BUSY

+PE

+ SLCT

- AUTOn

-

ERROR

- INIT

- SLCTIN

GND

GND
GND
GND

GND
GND

GND

25 GND

Serial Port Connector

DIRECW

0
0
0
0
0
0
0

:

DEScRPrn

Prinler

Data Bit 0

Prinler

Data Bit 1
Printer Dam Bit 2
Printer

Data Bit

Prints

Data
Printer Dam
Printer Dam

Printer Dam Bit 7

Acknoddge

Printer

ElldOfPIprr

Prinmr 6ebct

Auto

Prlntr Error
Printer hMauze

PrIntor !3ubct In

Ground

GWtUld

Ground

GtOWd
Ground
GNMK!

GfOUtld

Ground

Bit

Bii

81

Busy

Fead

-

J3

3
4

5

6

Maln Circuit

Board

I

J1

J2

1

JV

1 2 3

l

A

B

ON

272!sBKxROMlypa

27128BKXROMQp6

l

Mustboinrtrlkd~

F

ON
OFF

12345

(Z]

6 7 8 9

1

2
3
4

5

6
7

8

9

CADET
RXDT
TXDT
DTR

SG

DSR
RTS
CTS
RI

Keyboard Connector

Pin

Number

1
2
3
4
5

Dam Carrier
Receive Dam
Transmit Dam
Dam

Mminal

SQnal

Ground
Dam Set Ready

Requast

Clear to
Ring Indicator

Signal

Muno

Clock
Data
Not Connected
Ground

+5 VDC

Ground

Damct

Ready

to Send

Seed

l Factory Settlngs

Memcq

Bmko

ol

41256KB
4a256KB

4

4KZSKB

4xlMB

4xtMB
4rlMB

1MB

2MB

IMB

BMB

1OMB
1eMe

r-1MB

Bnkl

4 x

4 x

4XlMB
4llMB
4xlMB

256KB

256KB

Bulk2

4rZW(B

4x256)(8
4xYMB

Bank3

4 x

256KE

4 I

256KB

4XlMB

EQ386/20-2

9/22/89

Equity Series Computers

EQUITY 366/20

I/O Port Addresses
Address Function

lumper

I 2 3 4 5 6 7 8 9 10

4

A
3 A
4 B
3 B

A A
A B
B A
B B

A A
A B B

B-

A
B

A Video adapter parallel I/F,

A

-

A
B

Function

l Primary register set (Al FDC)

Secondary register sat (AT FDC)
PC register set (FDC)

Disable FDC register set

A

l Primary parallel I/F,

B

Secondary parallel I/F,

Disable parallel I/F

*

Primary serial I/F,

Secondary serial I/F,
Disable serial I/F

l AT -compatible FDD I/F

Equity Ill FDD I/F

l Standard setting

Test mode of VCO

IRQ7

IRQ4

IRQE

IRG3

IRQ7

WO-OlF DMA
020

-03F

022 - 023
040

-05F
060-OBF Keyboard Controller
070-07F
080-OQF
OAO -0BF
CICX -0DF DMA

OF0

-OFF Numeric Coprocessor

17g- 177
1FO - lF7
200-207

278 -27F Parallel Port 2

2F8-2FF
300-31F Robtype
3BO-3BF Reserved

378 -37F Parallel Port 1

3BO-38F SDLC, Bisynchronous Communication 2
3AD-3AF
380 -3BF MDA and Printer Port
3CO-3CF

3DO-3DF

3FO-3F7

3F8-3FF

Controller 1
Interrupt Controller 1
Configuration Registers

Timer/Counter

Real-Time Clock, NMI Mask

DMA

Page Register, MFG Port

interrupt Controller 2

Controller 2

Hard

Disk

Controller

Hard Disk Controller - Primary

Game Port

Bsrlal

Port 2

Card

Bisynchronous Communication 1

Resewed
CGA

floppy Disk Controller

Serial Port 1

-

Secondary

l

Factory

Settings

Equity Series Computers

4/3/89

The keylock on the front panel allows you to disable the

keyboard and RESET button and lock the top cover of the
main unit for security. The keyboard may be locked while the
system is in operation. This disables the keyboard so no
one can interfere with the current operation.

To lock the system, insert the key with the notch pointing
left and turn it clockwise. You must press the key in slightly
when you turn it. To unlock the system, insert the key with
the notch pointing up and turn the key counterclockwise.
You can remove the key in either position.

EQ386/20 - 3

EQUITY 386/20

DMA Channels

C%annel

0

1
2
3

4
5

6

7

Spare
Spare
floppy disk transfers
Spare (hard disk drive)
Cascade

Spare

Spare

Hardware Interrupts

CTLR1 CTLR2

IRQO
IRQl
IRQ2
IRQ3

IRQ4
IRQ5
IRQ6
IRQ7

IRQ8

IRQ9
IRQlO
IFtQ11
IRQ12
IRQ13
IRQ14

IRQ15

Timer Output 0

Keyboard

lntbnupt

Serial port 2
Serial port 1
Parallel port 2
Floppy disk interrupt
Parallel port

RTC interrupt

Redirected to

Reserved

Reserved

Reserved

Coprocessor

Hard disk controller

Reserved

Function

of data from

FUNCTION

from Controller 2

1

INTOAH

channel 0 -3

EQ386/20 - 4

4/3/89

Equity Series Computers

EQUITY 386/20

Installation/Support Tips

The Equity 386/20 has a power supply that is switchable

between 145 V, for USA and Canadian use, and 230 V, for

USE in Other countries. The voltage switch is located at the

rear of the CPU between the AC inlet and the AC outlet (see

figure below).

WARNING! The voltage is not changed between the AC

inlet and the AC outlet

order to function in Europe, only peripherals certified for use
at 230 V should be plugged into the outlet.

lf

the CPU is switched for

230

V in

---

---

---

---

lf

you are having difficulty in formatting the hard

disk drive, try starting over with the Unconditional

Format option in diagnostics.

When installing an optional expanded memory board
or increasing memory on the internal memory board*
for use as expanded memory, do not list the
memory under the memory expansion option in
SETUP. That option is for EXTENDED memory
ONLY.

lf you are installing an EGA or VGA card, select
SPECIAL OPTIONS as display type in SETUP. This
holds true even when you are using a color or
monochrome monitor with these cards.

When installing a hard disk drive, be sure to consult
the drive type tables (on page EQ386/20 -7) for the
drive type which fits the drive you are installing.

Adding Memory Modules

---

---

The total amount of memory must be one of the
following:1MB. 2 MB.

MB.

Memory banks must be filled with one size SIMM.
You cannot mix SIMM types in one bank.

4 MB,8MB,

10MBor

16

Installing floppy Disk Drives

---

---

When installing a floppy disk drive as drive B,
remember to set the drive select jumper to the
second position and attach the pass-through
connector on the floppy drive controller cable to the
drive, not the end connector.

If the drive does not function normally, make sure

that the drive type has been correctly selected in

SETUP. Also check that any special drivers that
may be necessary have been installed correctly.

Installing Hard Disk Drives

---

It is recommended that a 16-bit AT -type hard

disk controller be used in the Equity 386/20. lf you

must for some reason use an 8-bit, XT -type

controller, select drive type NONE in SETUP.

---

lf you are using more than one memory bank, they
must be filled in pairs. This means you can use 1,
2, or 4 banks. Each pair must be filled with the
same type of SIMMs. You must also fill them in
order. That means that the possible combinations
are Bank 0, Bank 0 and Bank 1, or all four banks.

Using Shadow RAM

---

It is only necessary to enable shadow RAM for the
video ROM if you are using an EGA or VGA card.
CGA, MDA and MGA cards are supported by the
system ROM BIOS. Therefore, they are included in
the shadow RAM setting for the BIOS ROM.

Equity Series Computers

4/3/89

EQ386/20 - 5

EQUITY 386/20

Software Problems

---

---

When installing a copy- protected software package
on the Equity 386/20, first try the installation at 20

MHz. If this does not work properly, try switching
to 8 MHz for the installation. lf you are still unable
to load the program at 20 MHz, try loading at 8

MHz and then switching to 20 MHz.

When using a software package that uses a keydisk

as its copy-protection method, try loading it at 20

MHz. lf this does not work, enable the &to Speed

option in SETUP.

EQ386/20 - 6

4/3/89

Equity Series Computer

Hard Disk Drive Types

EC!!

I?

16 ST.505

17
18
19

20
21
22
23

24

25
26

27
28

29
30
3'ST 5%732
32

33

34
35

36

37

38

39

a0
1'

42
43

dd

45
46 615

d!

da

a9

STM6
ST5C6

ST.506
ST.503

ST.506 733

I

ST%
ST58
ST506
ST506I306
ST326
ST506
ST5c6
ST506
ST506

ST506

I I

I

ESDI

ESDI 'C22

ST556

I I

612
977
977
1024

733

733

306

612

612
6%
9'6

306

6'1

1023

'C22

'024

326

'024

a20

830

I

4

6
8
6

*

8
5

15
3
5
7
a

1

4

5
7

7
S

7
5
4
4
4

1

7

s
4

4

7

5

a

'2

a

128

17

m

I7

xa

I?

512

I?

512

I?
17

256
17

17

17
17
17

l7

126

'7

0

ml

512

303

3ol

3w

0

305

3w

4.35

0

306
3cQ

512

5'2

'2a

'7
34

36
36
36
34
34
34
34

-

615

306

940

624

940

466

615

204

511

M?

733

334

ass

355

655

497

319

M3

733

426

-

663
977
977
1023

732
732
733
336

663

340

670

732
977

340

663

:32

1023

820
530

1024

528

reserved

203

405

cDC94m51
568
595
304

Toshba MK IDFA

426 ToshaaMK 134FA
304

102

204

102

201

406

405

102
204

426

425

1O"e
W"e
wne
WY
"One
W"e
"One
W"e

wne

,a0 5SeagateST251.
'58 3

Toshiba

'65 SeagaleST4O9f

362

Tortma MK'54F

EQUITY 386/20

-

MK56FB

Equity Series Computers

4/3/89

EQ386/20 - 7

EQUITY 366/20

Information Reference List

Engineering Change Notices

None.

Technical Information Bulletins

386/20-001

6/12/89

CHET/CHET-RM Board Connector

Product Support Bulletins

SOO47A

S-0067

S-ooQl

6112189

6/Q/m

4/1Q/aQ

5/16/89

6/12/89

6/12/89

6/13/89

?/l2/89

a/j l/as
a/t l/a9

Using Expanded Memory with the Equity and Apex

Equity Series Computers - ROM History

Apex/Apex Plus/Equity Series Keyboards

Equity

Using the

Common Questions 88 Answers on the Equity

Tape Backup Systems Test Results

Equity/Apex with Sysgen OmniBridge and BridgeFiler Drives

Using High Capacity ESDI and SCSI

Novell Netware Compatibility Test Results for the Equity

366/20

Coprooessor Installation

EEMM366.EXE

Device Driver

366/20

HDDs

with the Equity Series

366/20

Related Documentation

Y162Qgluxo2

Y162991ooMo

M-TM-EQ366

M-PM-E0366

M-PL-EQ366

Y16499100100

4/l/89

3/23/6g

EQ386/20-8

Equity

Equity

Equity

Equity

Equity

Equity

366/20

MSDOS 3.3 Manual

366120

GW-BASIC Manual

366/2O

Technical Manual

366/20

Technical Reference Manual

386/20

Parts List

366120

User’s Guide

9/22/89

Equity Series Computers