Epson EQUITY 386SX-20 PLUS User Manual
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
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
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