Epson Equity 386/25 PLUS Dimensions

EPSON

Product Support Bulletin

Subject: Proper Method for Running Benchmark and Diagnostics Programs

Date: 06/04/93 PSB No: S-0158

Page(s): 1 of 1 Originator: MWT

This bulletin describes the proper method for running any benchmark or diagnostics

programs. This applies to any computer system.

In most cases, the computer should be started using an MS-DOS boot diskette

that’s ‘clean’ -

in other words, one with no CONFIG.SYS or AUTOEXEC.BAT files.

The appropriate executable can then be run, either from diskette or hard drive.

There will be some exceptions to the above rule. In attempting to benchmark or

troubleshoot any add-on that requires a device driver (CD-ROM, local area network,

etc.), obviously the necessary device driver(s) must be loaded. Also, some

programs will require a minimum number of FILES or BUFFERS to be defined in

the CONFIG.SYS file. Such programs will usually display this requirement if they

are run without the necessary CONFIG.SYS file.

For the most consistent results, use the absolute minimal boot configuration that’s

allowed by the hardware being tested.

EPSON

Product Support Bulletin

Subject: Equity Series SIMM Compatibility

Date: 12/4/91

Page(s): 1 of 1

PSB No: S-0136

Originator: JAD

Due to the influx of third party SlMMs on the market, there are some that are not

compatible with Epson products. This bulletin is intended to be an aid in ensuring

that only compatible SlMMs are chosen for use in Epson’s Equity Series of

computers.

The SlMMs in question were SEIMENS, CUMULUS and KINGSTON. Installing these

SlMMs in Epson products may cause the following errors:

Parity Check 1

18FFFE 0000 202 Memory Address Error

164 System Options Not

Set

1500 E000 201” DOS RAM Address Error

It was thought that the chips used in these SlMMs were of poor quality.

Epson Portland evaluated the SlMMs in question and found that this was not true.

The problem is caused by the SIMM circuit boards (ITE and TECAP circuit boards)

used to manufacture the SIMM modules. The dimensions of these boards are not

compatible with industry standard SIMM sockets. This may result in incomplete

contact between the SIMM assembly and it’s socket. This is caused by insufficient

size of the contact surfaces in these products. Also enlarged holes in the TECAP

product allow the component pin to pass entirely through the hole without making

contact.

It is recommended that only SIMMS meeting industry standard contact surface

specifications be used in Epson Equity computer products.

Some recommended SlMMs that were tested and found Compatible are:

Toshiba

Matsushita

CDC Enterprises

Samsung

Aculogic

For more information contact Technical Support.

EPSON

EPSON AMERICA, INC.

INFORMATION

Product Support Bulletin

Subject:

Maximum Number of Printers Supported by Current Equity Computers

Date: 02/06/91

PSB No: S-0128

Page(s): 1 of 1 Originator: KAS

As computing environments increase in complexity, there has been an increasing

number of instances that require the support of several printers by one computer.

One common example is that of using Novell Netware’s print server capabilities to

provide printer access to a large group of users with differing printer requirements.

Netware is capable of supporting three (3) parallel and two (2) serial printers on one

server. Recent testing has shown that the Equity 386/25 Plus, Equity 386/25, Equity

386/20 and the Equity 386SX Plus will support three (3) parallel ports along with two

(2) serial ports. The key factor in providing support for a third parallel port is the

need for a parallel interface card that can be set to the IBM Monochrome

Graphics/Parallel printer I/O address at 3BCh. The computer looks for this address

first and, if present, will assign the parallel port on that card as LPT1. The built-in

parallel port (I/O address 378h) will then be addressed as LPT2. We also had an

AST I/O Mini serial/parallel card addressed at l/O address 278h, which was then

reassigned to LPT3. Each of the three parallel ports was attached to a printer. There

was also a printer attached to each of the two serial ports. All five printers were then

set to print simultaneously under Netware Version 2.15 Rev. C using PCONSOLE. All

five printers were able to print the documents assigned to them, simultaneously. The

units were then tested using WordPerfect 5.1 on the network and again were

successful in printing to the five (5) printers at the same time. The last tests were run

with the units booting under DOS 4.01 and screen prints being directed to each of

the printers. WordPerfect 5.1 was also used to direct documents to each of the

printers. Again all five (5) printers were able to print the files that were sent to them.

Although not all Equity computer models were tested in this situation, the Equity

models 386SX, lIe, Ill+ and II+ should work in a similar manner if the instructions

above are used as a guide. There is one item of which to be aware when using the

this setup and that is the system will complete the RAM count and lock up if using a

monochrome monitor. If you need to use three parallel ports, USE A COLOR

MONITOR.

EPSON

EPSON AMERICA, INC.

INFORMATION

Product Support Bulletin

Subject:

Equity 386/25 PLUS Questions and Answers

Date: 2/6/91

PSB No:

S-0125A

Page(s): 1 of 7Originator: JDB

GENERAL:

Q1. What microprocessor does the Equity 386/25 PLUS use?

The Equity 886/25 PLUS utilities the Intel 80386/25 DX microprocessor

running at 8 or 25Mhz. Use of this CPU gives you 386 performance and

compatibility in a 16-bit based computer architecture.

Q2. What speed does the Equity 386/25 PLUS operate at?

The Equity 386/25 PLUS operates at either a 8Mhz or 25Mhz processor

speed. The speed can be set by using the CPU speed switch located on

the front of the machine. At either processor speed, the system bus

operates at a fixed speed of 8Mhz.

Q3. What is

the

Auto Speed function?

The Equity 386/25 PLUS is capable of operating at 8MHz or 25MHz. Some

copy-protected applications require the computer to run at 8MHz

while

accessing the program diskette. By enabling the Auto speed function the

computer automatically switches to 8MHz when accessing the diskette

drive. It then switches back to 25MHz for optimal performance. Auto

speed is accessed through the SETUP program under the Auto speed

option.

Q4. Does the Equity 386/25 PLUS use the Phoenix or Award ROM BIOS?

No. All Equity desktop computers utilize a Seiko-Epson proprietary ROM

BIOS.

PSB No: S-0125A

Page: 2 of 7

Q5.

Q6.

Q7.

Q8.

Q9.

Can the Equity 386/25 PLUS support an 80367 co-processor?

The Equity 386/25 PLUS has a setup for an optional Intel 80387-25 or the

Weitek math co-processor which Operates at 25MHz. This allows extra

processing power for math intensive programs like Lotus 1-2-3 or

AUTOCAD.

Can the Equity 386/25 PLUS use option cards that are available for the

IBM PC/Al?

The Equity 386/25 PLUS uses an AT-compatible ISA (Industry Standard

Architecture) bus structure that enables you to install any of the various

add-on products designed for IBM PC, XT or AT computer, such as:

expanded memory, EGA or VGA video, internal modems and many more.

It also supports all of the option boards manufactured by Epson for the

EQUITY series. There are 4 standard l/O expansion slots (one with 8-bit

bus and 3 with 16-bit bus); The 16-bit slots will also accept 8-bit

compatible cards. The Equity 386/25 PLUS offers flexibility in tailoring the

system to your needs.

Are there my tested internal modems that can be used?

The Epson Link PC and the HayeS 2400 baud internal modems have been

approved.

Does the Equity 386/25 PLUS have a built in PS/2 mouse port?

Yes,

it has a PS/2 compatible mouse port on the rear panel of the

computer. The connector is a 6 pin mini DIN for an IRQ12 mouse or other

device.

Can the Equity “+” keyboard be used on this machine?

Th8 Equity “+” keyboards is not the same keyboards used on the Equity

386/25 PLUS and not interchangeable. The cable on the Equity 386/25

PLUS keyboard is a Mini Din, 6-pin connector.

PSBNo:

S-0125A

Page: 3 of 7

Q10. What is the Password Security?

This system provides three levels of password protection against

unauthorized access: password before boot, network-server mode

password and password disable. The password is user definable and

consists of a 7-byte (character) string. The password protection feature is

not case sensitive. When the system is booted for the first time, or the

password has been disabled and re-enabled by moving jumper J13 on

the system board, the user defines and enables the password using the

Setup utility on the Reference disk.

Q11.

Q12.

Q13.

Q14.

What terminal emulation boards are compatible with the Equity 386/25

PLUS?

The following products have been tested and approved:

3278/79 Emulation Adaptor

IBM 5250 Board

IRMA/2

SDLC

IBM

DCA Inc.

IBM

Does the Equity 386/25 PLUS have a battery for the Real Time Clock?

The Equity 386/25 PLUS is using a “Dallas” model DS1287 which

incorporates an HD146818 Compatible real-time clock with an internal

battery.

What VGA adapters are compatible with the Equity 386/25 PLUS?

The following VGA adapters have been tested in the Equity 386/25 PLUS:

Paradise VGA Plus 16 Card

Paradise VGA Professional Card

Video Seven 1048i High Resolution Card

Can the Serial and parallel ports be disabled?

No. The parallel and serial ports auto configure at boot up from the BIOS

ROM. They are set up as LPT1 and COM1 respectively and there are no

hardware jumpers or DIP switches to set them to LPT2 and COM2.

PSB No: S-0125A

Page: 4 of 7

Q15.

Q16.

Q17.

Q18.

How many internal device bays does the Equity 386/25 PLUS have and

will it support a full-height device?

The Equity 386/25 PLUS has 2 half-height bays to support up to 2 half-

height devices. There is no room for a full-height device.

How many wait states does the Equity 386/25 PLUS have?

At 25MHz the system utilities a "0 wait state” architecture for memory

access and 0 wait states for ROM BIOS access on the motherboard. At

8MHz, memory and ROM BIOS access require 0 wait states: on the

expansion bus, all memory or device requests are 0 wait states. If

additional wait states are required, devices on the I/O channel hold the

READY signal low, thus wait states are generated until the device can

respond to the CPU.

Are the wait states user selectable?

No, the Equity 386/25 PLUS automatically inserts them when needed after

the command phase Of the processor clock cycle.

How many jumpers are on the system board?

There are fourteen (14) jumpers on the system board:

System Board:

Jumper 1: Enables input/output channel ready

Jumper 2: Base memory

Jumper 3: Base memory

Jumper 4: Extended memory

Jumper 5: Extended memory

Jumper 6: Extended memory

Jumper 7: Extended memory

Jumper 8: Extended memory

Jumper 9: Not used

Jumper 10: Enables/Disables build-in mouse

Jumper 11: Enables/Disables option card for mouse Jumper 12:

Enables/Disables color or mono option card

Jumper 13: Enables/Disables power-on password

Jumper 14: Enables/Disabies build-in VGA

PSB No: S-0125A

Page: 5 of 7

Q19.

Q20.

Q21.

What kind of hard disk drives are available

for the Equity 386/25 Plus?

The Equity 386/25 Plus is available in one hard disk configuration. A

100Mb 3.5” (Conner CP-3104, 25ms access time) hard disk is available.

The hard disk drive offers a 1:1 interleave and uses an embedded

controller with an IDE interface. When installing the 100Mb drive use type

60 in SETUP.

What hard drive controller is used in the Equity 386/25 PLUS?

The Equity 386/25 PLUS uses a controller embedded on the hard drive.

This controller connects to a Task File IDE interface that is integrated in

the system board.

Can the Equity 386/25 PLUS use other hard disk drives and controllers?

Yes, the IDE Interface on the system board can be disabled and other

third party hard drive controllers and drives can be used. The interface

can be disabled by installing a third party controller. The system

automatically detects the controller and disables the embedded IDE

interface. Other embedded controller AT-type drives can also be used with

the IDE Interface.

What extended hard drive support is available in the ROM BIOS that

comes with the Epson Equity 386/25 PLUS?

The Seiko-Epson BIOS will directly support hard drives that range in size

from 10Mb to 153Mb. There is direct support for the Seagate ST-251 and

the ST-4096 hard disks, as well as, several ESDI drives. By providing this

support for 3rd party hard disk drives, the Equity 386/25 PLUS has the

capability to use most 3rd party 8-bit and 16-bit hard disk controllers.

SCSI

drives have their own controllers attached to the drive and should

work correctly when attached to the bus with a host adapter.

The Equity 386/25 PLUS also has a User Definable setting that allows you

to set up hard disk drives that are not supported by the Equity 386/25

PLUS Drive Type Table. In SETUP, a sub-menu lists the settings you can

change for each drive: the number of cylinders (tracks), the number of

read/write heads, the number of sectors, the precompensation cylinder,

the landing zone (the cylinder on which you Want to park the heads when

moving the computer), and the total storage capacity in megabytes.

PSB No: S-0125A

Page: 6 of 7

FLOPPY DRIVES:

Q23.

Q24.

Q25.

MEMORY:

Q26.

Q27.

What types of floppy disk drives will work on the Equity 386/25 PLUS?

The Equity 386/25 PLUS comes standard with a 5.25”, 1.2Mb floppy disk

drive. There is built-in BIOS support for industry standard 360Kb and

1.44Mb, 3.5” half-height floppy disk drives as well as the 720Kb, 3.5”

floppy drive. All four drive sizes are available from Epson.

Will the Equity 386/25 PLUS support 3 floppy disk drives?

No, not directly. The Epson controller and ROM BIOS supports a

maximum of two floppy drives.

Can the floppy disk controller be disabled?

No. The floppy disk controller is integrated in the system board and there

are no jumpers to enable or disable it. lf an additional or 3rd party board is

present the BIOS ROM auto-configure at bootup.

What type of RAM chips are used in the Equity 386/25 PLUS?

The Equity 386/25 PLUS utilities eight (8) D424256C-70 (256x4), 70 nSec

RAM chips plus panty on the

system board.

How do I increase

the memory of the Equity 386/25 PLUS?

The standard Equity 386/25 PLUS system includes 2Mb of on-board

memory. You can add SlMMs (single in-line

memory modules) to increase

on-board memory.

With

added SIMMs the total amount of

on-board

memory in the computer must be one of the following:

1 Mb, 2Mb, 3Mb,

4Mb, 6Mb, 8Mb, 9Mb, 10Mb, 12Mb or 16Mb.

SIMM configuration

can be found on page 5-17 in the Users’ Guide.

Memory can also be expanded through the use of third party memory boards

using an l/O slot Epson does not recommend a third-party memory board.

PSB No: S-0125A

Page: 7 of 7

Q28. What SIMM chips should be used when adding memory to the Equity 386/25

PLUS?

Use the Epson 70 nS8c - 9 bit SIMM module kits, either 1-MB kit (4-256Kb

SIMM’s, Part # A808231) or the 2MB kit (2-1 Mb SIMM’s, Part # A808101), to

extend the system memory. Should you need to use third party SIMM modules

we recommend the following:

Toshiba

Matshushita

CDC Enterprises

Samsung (#KMM591000-7)

Aculogic

1 MBit x 9 70 nSec

**NOTE**

The following SIMM chips do not work in the Equity 386/25:

IBM

Compaq

Seimens

Panasonic

NMBS

Cumulus

SOFTWARE:

Q29.

What version of DOS is provided with the Equity 386/25 PLUS?

The Equity 386/25 PLUS is not bundled with an operating system. When the

system is purchased, the customer can choose between MS-DOS 3.3 and 4.01

or a third party operating system like OS/2 Xenix or Unix.

Q30.

Is the Equity 386/25 PLUS compatible with OS/2?

Yes, since OS/2 is much more hardware-specific than MS-DOS, the Epson

version of MS OS/2 is required.

Q31.

Will it support Unix and/or Xenix? Which versions?

The Equity 386/25 PLUS has been tested w/ Santa Cruz Operations Xenix Rel.

21 and IBM PC Xenix Vers. 1.

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