Epson 486DX2 EN - Manual (Page 2)

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: processor,
50 MHz system: processor
MHz speed is internal only; 8 MHz
speed is simulated by inserting wait states;
high/low speed selection through software
or keyboard d; 0 wait state
memory access at high speed
4MB RAM standard soldered onto memory
board; base memory of or
640KB selectable through jumpers.
Memory expandable using 256KB or
SIMMS, up to 16MB (maximum);
must be fast-page mode, 80ns access
speed (or faster)
(includes system and VGA
BIOS)
0 wait state
speed; automatically
copies both ROM BIOS and video ROM
Standard for 50 MHz model; on 25 MHz
model, microprocessor can be
replaced with optional chip
82385 standard
high-speed static RAM;
way set associative.
Real-time clock, calendar, and
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: highdensity,
double-density, 360KB;
highdensity, or
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 DRAM (video
memory) built into main system board;
supports up to x 600 or 1024 x 768
pixels in or up to 640 x pixels
in multi-frequency monitor
required for resolutions over 640
15-pin, D-shell connector
programmable, asynchronous;
9-pin, D-shell connector
Standard &bit parallel, mono-directional;
25-pin, D-shell connector
Mini DIN,
connector for
compatible mouse or other device
Mini DIN,
connector for
compatible keyboard
Six standard input/output expansion slots
(five ISA compatible and one
ISA compatible); 8 MHz bus speed
Internal; operation controllable by the Setup
fan-cooled, automatic (worldwide)
input voltage sensing
98 to 132 VAC and 195 to
VAC
VDC at 22 Amps, VDC at
6.8 Amps
-12 VDC at Amps, -5 VDC at
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