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EQUITY 486DX2/50 PLUS
EQUITY 486SX/25 PLUS
Computer Specifications
CPU and Memory
32-bit CPU
System speed
System memory
ROM
Shadow RAM
Math coprocessor
Cache controller
Cache RAM
Clock/calendar
25 MHz system:
804865X
processor,
50 MHz system:
80486DX2/50
processor
25MHzregardlessofCPU;for80486DX2/50,
50
MHz speed is internal only; 8 MHz
speed is simulated by inserting wait states;
high/low speed selection through software
or keyboard
comman
d; 0 wait state
memory access at high speed
4MB RAM standard soldered onto memory
board; base memory of
256KB,
512KB
or
640KB selectable through jumpers.
Memory expandable using 256KB or
IMB SIMMS, up to 16MB (maximum);
SIMMs must be fast-page mode, 80ns access
speed (or faster)
128KB
(includes system BIOS and VGA
BIOS)
0 wait state
acceSS
speed; automatically
copies both ROM BIOS and video ROM
intoRAM
Standard for 50 MHz model; on 25 MHz
model,
80486SX
microprocessor can be
replaced with optional
80487SX
chip
82385
(25MHz)
standard
32KB high-speed
(251-u)
static RAM;
two-
way set associative.
Real-time clock, calendar, and
50-byte
CMOS RAM for configuration;
battery backup
Controllers
Diskette
Hard disk
Interfaces
Monitor
Serial
Parallel
Mouse port
Keyboard
Option slots
Power Supply
Type
Input ranges
Maximum outputs
Supports up to two drives in any of four
formats: 5%inch, highdensity,
1.2MB;
5%inch,
double-density, 360KB;
3%inch,
highdensity, 144MB; or
31h-inch,
double-density, 720KB; also
supports optional Epson tape drive;
controller on main system board
Supports up to two half-height drives;
embedded IDE controller; interface on main
system board
VGA adapter with
1MB
DRAM (video
memory) built into main system board;
supports up to 800 x 600 or 1024 x 768
pixels in
&colors
or up to 640 x
480
pixels
in
256-colors;
multi-frequency monitor
required for resolutions over 640
X
480
15-pin, D-shell connector
RS232C,
programmable, asynchronous;
9-pin, D-shell connector
Standard &bit parallel, mono-directional;
25-pin, D-shell connector
Mini DIN,
6-pin
connector for
PS/2
compatible mouse or other device
Mini DIN,
6-pin
connector for
F’S/2
compatible keyboard
Six standard input/output expansion slots
(five
16&t
ISA compatible and one &bit
ISA compatible); 8 MHz bus speed
Internal; operation controllable by the Setup
program
2OOW,
fan-cooled, automatic (worldwide)
input voltage sensing
98 to 132 VAC and 195 to 264 VAC
+5
VDC at 22 Amps,
+12
VDC at
6.8 Amps
-12 VDC at
.50
Amps, -5 VDC at
so
Amps
Equity Series Computers
5/12/92
Mass Storage Bays
Up to five drives maximum
Internal drive bay
Two half-height or one full-height drives
Externally-accessible One third-height and two half-height drives
drive bay
or one third-height and one full-height
drives
486DX2/50 & 486SX/25 PLUS-l