Page 1
EQUITY 386SX/20 PLUS
Computer Specifications
CPU and Memory
CPU
System memory
ROM
Shadow RAM
Cache controller
CacheRAM
Math coprocessor
(0pti-u
CkXk/Cd~dar
Controllers
Diskette
80386sx microptocgsor, 20
dock
speed, 20 MHz or simulated 8 MHz
proceaor
or keyboard command
0 wait state memory access speed at
ZOMHZ
~~stanc&d;basememoryof64XB
Memory expandable using
IMB,
(maximum); SIMMs must be fast-page mode,
8ons access
128KB
BIOS)
0 wait state access speed; automaticatly
copies both ROM BIOS
A382o2sx (2oMliz) standard
32KB
80387SX (20 MHz) support
Real-time clock, calendar, and
114-byte
banerytJ=w
supports up to two drive in any of four
formats: 5 1
5
3
3
on main system board
sped, selectable through software
or MB
l/4-inch.
1/2-m& highdtity, 1.44MB;
1/2-m&
SlMMs
sped
(includes system BIOS and VGA
hi&qeed (25x1s)
CMOS RAM for
/knch,
double-density,
double-density, ROKB; controller
256KB,
up to
14MB
(or faster)
and
video ROM into
static
ConfIguration;
highdensity,
36oKB;
MHZ
RAM
system
1.2MB;
or
Hard disk
Interfaces
Monitor
serial
Parallel
Keyboard
option slots
Speaker-
Power Supply
Type
Input ranges
Maximum outputs
Mass Storage
Diskette drives
Hard disk drives
supports up to two half-height drives;
embedded controller; interface on main
system board
VGA adapter with
memory) built
sqportsupto800x600pixelsin16-co10lscX
up to 640 x
frequency monitor required for resolutiow
over64ox48o
15-pin+ D-she.n ConnectoT
RSZQC,
g-pin.
Standard
2api&D-sheuconnector
Mini DIN,
compatible mouse or other device
Mini DIN,
compatiMe
Four standard input/output expansion slots
(three
ISA
Internal; operation controllable by software
14OW,
input voltage sensing
98 to 132 VAC and 195 to 264 VAC
+5
4.2 Amps
-l2VDCat03Amps,-5VlXat
03 Amps
+12
Up to three half-height drives maximum (one
vertical mount and two horizontal mounts)
configurable
types (only horizontal mounts
accessed externally):
5 l/4-inch diskette drive,
(hi&-d-w) d-ge q=dty
3 l/2-inch diskette drive,
e$w==w amge
5
(double-density) storage capadty
3 l/2-inch
(doublf%chsity) storage capacity
3
up to half-height size;
vertically, second mounted
programmable, asynchronous;
D-shell clxlnecta
&bit
apin
l&bit
compatiile);
fan-cooled, automatic (worldwide)
VDC at 18 Amps,
VDC at 6 Amps, peak (10 seconds)
1/44nch
l/2-inch
diskette drive,
&kette
form factor hard disk drive(s);
512KB DRAh4
into main
system board;
480
pixels in
parallel,
6-pin connector
connector for
keyboard
ISA compatible and
using
256-colors; multi-
mon~o&;
for
PS/2
PS/2
8 MHz bus speed
+12
VDC at
any of the foIlowing drive
canbe
1.2MB
1.44MB
=padty
36OKB
drive,
ROKB
first
drive mounted
hohm&lly
(video
ogle
&bit
Equity
Series Computers
3/6/91
386SX/20 PLUS-1
Page 2
EQUITY 386SX/20 PLUS
Keyboard
Detachable, two
Layout
S&key
17-key numeric/cursor
additional
(user-definable)
Fwtion
Four levels (normal, shift,
userdetinable
Environmenti Requirements
fnofb
I
Physical Characteristics
inches (374 mm)
Width
15
16.75 inches (419 mm)
Height
weight
(without
6 inches (151 mm)
Single diskette drive model:
20.75 lb (9.4 kg)
keyboard)
p&tioQ 101 Sculpted keys
QWERTY main
Ckey cursor
I
keyboard;
pad; 10
cursor keys;
pad; 16 function
control,
alternate);
kep
Serial Port Connector (CN4)
Serial Port
Pin ISlgnd
1
I-
2 Recaive Deb
3
4
5
Connector
ID.?i9camrD0t0ci
Transms
Data Twmnal
Nd
Used
Pin
Assi@nents
lbta
Reejv 0
Inn ISN
la
7
8 CkwTo6eml
lD0tascim0dv
&quad
Rmg lndicrta
To
Sand
,
Keyboard and Mouse Connector
pin6wP’n5
Pin44
Although the keyboard
identical, they cannot be used interchangeably.
Keyboard
Gmnector Pin Assignnvnfs
d--pins
r/
r”\
Pin2
axi
mouse connectors are physically
P(nl
Connector Pin Assignments
Parallel Port Connector (CN5)
Pin 13
Pin 25
Pamlkl
Port Gmnector Pin Assignments
5
DATA3
6
DATA4 15
7 DATA5
6 DATA6
9
DATA7
*Active Low
Logic
14
WT(Y
ERRclR’
18
INIT-
17
sEmnw
16
SIGNAL GND
Pin 1
Pin 14
23 SIGNAL
24 SIGNAL
25 SIGNAL
GND
GND
GND
IPln
1
2
3
4
5
6
IslonJ
Mom0
Data
Reserved
&ourd
+5vDc (nts0d)
Moumacck
R-
I
386SX/20 PLUS-2
3/6/91
Equity Series Computers
Page 3
EQUITY 366SX/20 PLUS
VGA Connector (CN-3)
VGA Connector Pin Assignments
Pin
SW
Red
1
3 Green VI&O
3 Blue vld00
4
5
6 Red
7
6
IBluaRdum
Hardware Interrupts
I
CTRLl I
IRQO
IRQl
Im2
IRo3
V&o
Unused
GfOWld 13 Honzoflt0l
R6turn
~GreanFWum
I
clRt2
I FLlNcrloN
Tif?U3fOUlplO
Key-
Interrupt bwn conlroll0r
sw!almrt2
pm
slorul
Q
10
11
12
14
15
Key
Svrc Return
Reserved
Resarvd
vertid s)nc
1
Unused
2
sync
Jumper Settings
The illustration Wow shows the locations of the jumpers on
main system board.
4
I
1
s MMiocketr
System Board Jumper Settings
Jumpers
-tm
A
0
A
0
i2
the
Jl
53
I
1
I
I
IRoll
IRix2
IRa13
IRQ14
IRQ15
1 Reserved
Mm, pomtmg ckhwa
-r
Hard dak wntrollw
Reserved
I
l
Factory wttings
Equity
Series Computers
ml91
366Sx120
PLUS-3
Page 4
EQUITY 386SX/20 PLUS
SIMM lnstallation
The sockets are labelled as shown
If
an option card is blocking access to the SIMM sockets, remove
option card(s).
Hold the SIMM so the component side is facing the computer’s back
parAandthemetalconnec
below.
the
torpinsarefaciqdown
This configuration adds 4MB plus
512KB
for a total
6MB
plus 512KB
of on-board memory.
Note:
When installing
SIMh43, the
only constraint is that you must install
thes.ametypeofSJMMinbothslotsofabank
Dh4A alanruls
ChUlnl
0(cTlu1)
1
(cmul)
2(cTRLl)
3(cTFLl)
4
CTRL 2)
5 (CTRL 2)
6 (CTRL
7
(mu
2)
2)
IFWllOfl
Isram
SMC
Floppy
d&i drw8
span
Icasurde?OfCTFtLl
spare
spar0
spsro
omtrdlor
Hard Disk Drive Types
‘Ihefollowingtablelissthetypgofharddiskdrivesyoucanusein
your computer. Check this tile and the documentation supplied
wi~yourharddisktofindthecorredrnrmberforthetypeofhard
disk drive(s) installed in your computer. You need to enter this
number when you st the
hard
disk drive configuration in the Setup
progr-
Hard disk drive types
component3
Installing Memory Modules
~erearesixSTMMsocketronthemainsystem~dorganizedin
three banks consisting of two sockets each Each socket can contain
0neSIMM.
Youmustfiuthesocketsinanybankyouusewiththesametypeof
SIMM. The type of SIMMs you can install are
You can install SlMMs for a total of
which brings
irtstaU
yoke
system total to
maximum amount of
the
12MB
14MB
on+oard
256KB,
IMB, or 4MB.
of additional memory,
of on-board memory. To
memory, you would install
t.befollowingSlMMsinthethreebanks:
&
Bank0
X
IMB MB
!FY
1MB 1MB
The following is another example of an additional memory
configuration
09 ISTda616l5 Is 1
01
Is1406IMo I8
I733
15 117
121ST-506
191Sldod 3m
14
15 I
161ST-54s16l2
171W5061Snt 6
I28
2s
I655
ST4061m
1
I
Klfl2
Y -
ISlsod 1676
ST-5&]306
1
1717
4 17
7
I
1 I
14
14 117 I-
1. I.-
141
17
I17
I-
I7
I
117
117
I-
17 0
‘100
-
128
-
I
I
Ill
13001
I733 130.41
I
---
l&5
l&l71
-..
I
I 10.3 I
3lfl
1 1
1
73314.6
I
I
I
I I ---
1653
120.3]
¶ll1
a.5 1
Igo Im.rI
I-- I...,
,
1340
1102
1
I-
--d-
CZC94205-51Ql
1
1
I
I
I
I
I
1
!YY
1MB 1MB
386SX/20 PLUS-4
!x!
256KB 256KB
%
1MB 1MB
3/6/91
Equity Series Computers
Page 5
EQUITY 386SX/20 PLUS
Hard disk drive types (continued)
Installation / Support Tips
Power
The Equity
between
countries. There is no manual
autosensing.
386X/20
IlSV,
for USA and
PLUS
hks
a power supply that is switchable
hdian
tit&
as the power supply is
use, and
23OV,
for use in other
Notes:
1.
Minhaibe 8425F, Seagate
ST125
2. connercP-3044orMiniscn~acl5L4canbeusedastype17
3. For Western Digital
4. Micropolis 1325,
ESDI HIX
or Drive Maker default setting
Ataal3C85, Lanstor La&I,
Maxtor
xT1065,
Newbury NDRlOS5
5. Micropolis
1323A,
Miniscribe
3035, Microscience HHlQ50, Seagate
sr463
6. The landing zone value is 964
7. The factory-installed hard disk drive type for the Equity
PLUS is
number
60
(100MB).
38&X/20
.
mous. pofl
koytmfd cable SC&b4
I
Equity Series Computers
3/6/91
386SX/20 PLUS-5
Page 6
EQUITY 386SX/20 PLUS
Mouse and Keyboard
-
When attaching the mouse and keyboard connectors, be
careful to attach them to the proper connectors. Although
are physically identical, they are not interchangeable.
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 to
-
If
the drive does
drive
ty-pe
that
installed correctly.
-
ff you have installed two floppy disk drives, remember that
the Equity 38&5X/20
isitlser~indriveBandnodiskisinsertedindriveA.
Installing Hard Disk Drives
-
It is recommended that a
be used in the Equity
drive that cannot make use of the internal hard disk controIIer.
Also remember to disable the onboard hard disk cormoIler
when installing such a drive.
-
If you are having
try starting over with the Unconditional Format option in
diagnostics.
has been correctly selected in SETUP. Also check
any special drivers that may be necessary havebeen
the
end connector.
IID(
function normally, make sure that the
PLUS will boot from drive B when a disk
l&bit
38&5X/20
difficrilty
AT-type hard disk controller
PLUS, if you are installing
in formatting the hard disk drive,
they
a
Information Reference List
Engineering Change Notices
NON?.
Technical Information Bulletins
NOW
Product Support Bulletina
NOIE
Related Documentation
TM-3&2QSx+
PlA862OSX+
Y72399100100
Equity 3%SX/20
Equity
386!3wo
Ec~u.ity
386%/20 PLUS User’s Guide
PLUS Service
PLUS Parts
Ma.tnaaI
Iist
-
When installing a hard disk drive, be sure to consult the drive
type tables for the drive type which fits the drive you are
installing. If there is no match for your drive, use the User
Defked drive
Software Problems
-
When installing a copy-protected software package on the
Equity 3%5X/20 PLUS,
this does not work properly, try switching to 8MHz for the
installation If you are still unable to load the program at
2OMHz, h-y
-
When using a software package that uses a
copy-protection method, try loading it at
not work, enable the Auto
Power-on Password
-
Make sure that you do not forget the
should you set one up. If you do, it will be necessary to disable
itbymovingjumperJ3onthemaincircuitboard
position.
opticm
loading at
first try
the
installation
8MHz
and then switching to
Sped
option in SETUP.
Poweron
at
keydisk
2OMHz.
Password
2OMHz.
2OMHz.
as its
If this does
totheA
If
386SX/20 PLUS-6
3/6/91
Equity Series
Computers
Loading...