Epson Equity LT Product Information Guide
Switch Settings
EQUITY LT
Computer Specifications
CPU:
RAM:
ROM:
Floppy Disk
Controller:
Expansion Slots:
Speaker:
Clock/Calendar
RAM:
Keyboard:
Power:
Video Controller
and Screen:
Mass storage:
Standard:
Standard:
Interfaces:
Standard:
Standard:
Standard:
Standard:
Environmental
Conditions:
Temperature
Humidity:
Physical
Dimensions: Wldlh
Display Options: Supertwist
Screen Type:
LCD Color:
Size (Active Area):95x4 1
Aspect Ratio:
Graphrcs
Resolution: 640x200 640Y200
Character
Drsplav:
S&&able
Anglellnverse
Video:
Adjustable
Brightness:
Power Saver
Feature:
Equity LT Options:
NEC V30 dual-speed
4.77 or 10 MHz
clock
speeds.
16.blf data bus
640KB on
16KB. ,n
two sockets
Supports
dwes
and one external 5 25”
drive
Two expansron
Internal. programmable
64 Bytes of CMOS RAM
clock. calendar, and system
cont,gurat,on w,th
P,op,,e,ary, full-functmn. 65
separate
numer~clcursor
N,Cad rechargeable battery and
siandard 1101220 AC adaptor
Superlwf
external CGA
Two. 3.5 half-height floppy
dwes. 720KB storage
35-
half-helgh,
20MB hard
Centronlcs’-compatible parallel port
RS-232C
5 25 floppy
Exlernal
CGA
Operating
(50 to
35%)
Storage Range
(-20” lo
Operating Range 20% 10 60%
non-condensing
storage Range 10% to 90%
non-condensmg
-13 6
Depth -12 2
HeightWaghi-
(Dual floppy
Rellectlve Transmlsslve
YdOW
14to1 14101
80 x 25
View
Y=?S
NO
NO
Internal 30011200 baud modem
13 CGAcolordlsplay(640 x
carrying case
Cigarette lighter
Screen
Supertwsl LCD
Supertwsl
m1croprocess0r.
Switch
selectable
20-b,,
address bus and
man
system board
two tnfernal
35
slots
(proprietary)
battery backup
or super,wsl
momtor
port
capacity
floppy
disk dwe and
disk drive
compattble serial
disk dwe
port
port
Range
41~
-4O to 12Z°F
6OOC)
I”
I”
3 1
I”
12 6 Ibs
disk
drive
adaptor
d,splays
dnsplay
Backltt
(720KB)
(360KB)
lor real-llme
keys,
pad
backlit
LCD,
opflonal
disk
port
to
90°F
conhguratlon)
Backlit LCD
Blue
95’
x 41
60 x
25
Yes
Yes
Yes
LCD
display
I
200dots)
The CPU SPEED switch selects between 4.77 MHz and 10
MHz. When the computer is running at 4.77 MHz, the power
light is orange, and at 10 MHz, the light is green.
The CPU SPEED switch is located above the keyboard.
Num
Lock
LCD DIP Switch Settings
Switches
1 2 3 4
ON
OFF
ON ON
ON OFF
OFF ON
OFF OFF
ON
OFF
Functions
LCD Normal
LCD Reverse
LCD Screen Mode 0
LCD Screen Mode 1
LCD Screen Mode 2
LCD Screen Mode 3
Select LCD
Select RGB color monitor
J
Equity Series Computers
12/12/88
EQLT - 1
EQUITY LT
Back Panel DIP Switch Settings
Switches
12 3 4
3N
3FF
ON
OFF
ON
OFF
ON
OFF
Use external diskette drive
Use parallel printer
External diskette drive is B
External diskette drive is A
1 FDD
2
FDDs
Serial port is secondary
Serial port is primary
Functions
PIN NO. SIGNAL NAME DIRECTION
1
:
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18-25 GND
-STROBE 0
DATA0
DATA1
DATA2 0
DATA3
DATA4
DATA5
DATA6 0
DATA7
-ACK
BUSY
ZCT
-AUTOFD
-ERROR
-1NIT
-SLCTIN
ii
0
i
0
I
I
I
I
I
I
I
I
Serial Port Connector
PIN NO. SIGNAL NAME DIRECTION
1
:
4
z
L
9
CRDET
RXDT
TXDT
DTR
SG
DSR
RTS
CTS
RI
I
I
i
:,
I
I
DESCRIPTION
Strobe
Printer
Printer Data 1
Printer Data
Printer Data
Printer Data
Printer
Printer
Printer
Acknowledge
Printer Busy
Paper End
Printer Select
Auto Feed
Printer Error
Printer Initialize
Printer Select
Ground
DESCRIPTION
Data Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request to send
Clear to Send
Ring Indicator
Data
Data
Data
Data
0
2
3
4
5
6
7
System Board Jumper Adjustment
Jumper 5 is used to control the LED showing drive access
for the left-hand drive.
In position B, it supports a HDD.
In position A, it supports a FDD.
Connector Pin Assignments
Parallel Port Connector
13
000000000000cJ
25
oooooooooooc
Monitor Connector
PIN NO. SIGNAL NAME DIRECTION
ROUT
GOUT
BOUT
IOUT
NC
HSYNC
VSYNC
DESCRIPTION
Frame Ground
Ground
Video Signal (Red)
Video Signal (Green)
Video Signal (Blue)
Video Signal (Intensity)
No connection
Horizontal Sync.
Vertical Sync.
EQLT - 2
12/12/88
Equity Series Computers
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