Epson Equity 386-20 Product Information Guide
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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
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