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User Manual
\
r e s e t
I'
power light
button
speed (TURBO)
hard disk 'ght
access light
monitor cable
AC
inlet
AC outlet
Computer Specifications
CPU and Memory
32-bit CPU
80386SX, 33 MHz microprocessor with
16-bit bus
System speed
High and low speeds available; high
speed is 33 MHz, low speed is 8 MHz;
speed selection through SETUP program
and keyboard commands; 0 or 1 wait state
memory access selectable through SETUP
hard disk or diskette
drive bay
diskette drive
\
I
I
COM1 COM2
Parallel
Memory
button
ROM
Video RAM
Shadow RAM
Math
coprocessor
Clock/calendar
Controllers
Video
Diskette
\
Hard disk
Game
Interfaces
Monitor
Parallel
5/28/93
Epson EL 3S/33
To select low speed, press the
and - keys simultaneously. To select
high speed, press the Ctrl, Alt, and + keys
simultaneously. (Use the - or + key on the
numeric keypad.)
2MB RAM standard on SIMMs;
expandable using 256KB, 1MB, or 4MB
SIMMs to 16MB (maximum); SIMMs must
be 30-pin, fast-page mode type with 70ns
(or faster) access speed
Phoenix BIOS A386 V1.03; 64KB system
BIOS, video BIOS, and SETUP code
located in EPROM on main system board
256KB DRAM on main system board,
expandable to 512KB or 1MB using 70ns
or 80ns 44256 DIP chips
32KB or 64KB, 0 or 1 wait state access
speed; system ROM BIOS and video ROM
can be copied into RAM
80387SX, 33 MHz socket for math
coprocessor
Real-time clock, calendar, and CMOS
RAM socketed on main system board with
built-in battery backup
Trident@ VGA controller on main system
board; provides resolutions up to
1024 x 768 in 16 colors
Controller on main system board supports
up to two diskette drives, maximum
Interface on main system board supports
up to two IDE hard disk drives,
maximum, with built-in controllers on the
hard disk drive itself.
VGA interface built into main system
board for analog or multifrequency VGA
monitor; 15-pin, D-shell connector
One standard B-bit parallel, unidirectional
interface built into main system board;
25-pin, D-shell connector
Epson EL 3S/33-1
Ctrl, Alt,
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Summary of Contents for Epson EL 3S/33
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Page 1: Computer Specifications
Epson EL 3S/33 To select low speed, press the Ctrl, Alt, hard disk or diskette and - keys simultaneously. To select drive bay high speed, press the Ctrl, Alt, and + keys simultaneously. (Use the - or + key on the numeric keypad.) - Page 2 Epson EL 3S/33 Serial Two RS-232C, programmable, Power Supply asynchronous interfaces built into main 65 Watt, fan cooled Type system board; 9-pin, D-shell connectors Input ranges to 260 VAC Game One game port interface built into main system board; 15-pin, D-shell connector Maximum VDC at 7.5 Amps, +12 VDC at...
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Page 3: Major Subassemblies
Epson EL 3S/33 Serial Port Connectors (CN4 and CN5) Major Subassemblies a, option card power connector coprocessor supply Serial Port Connector Pin Assignments main system board Keyboard Connector (CON1) pin 5 + pin 3 pin 4 -b pin 2 pin 1... -
Page 4: Dma Assignments
Epson EL 3S/33 Game Port Connector (CN1) System Memory Map pin 8 pin 1 000FFFFFFh System BIOS ROM: 64KB Duplicated from 0F0000h pin 15 pin 9 000FF0000h Resewed for system board: 64KB Game Port Connector Pin Assignments Duplicated from 0E0000h... -
Page 5: Jumper Settings
Epson EL 3S/33 System l/O Address Map Jumper Settings Port Jumper Settings Hex address j Assigned device 000-01F I DMA controller 1,8237A-5 020-03F interrupt controller 1,8259A, master 022-023 Chip set configuration register 040-05F Timer, 8254-2 060-06F 8042 (Keyboard) 070 - 07F (CMOS) -
Page 6: Hard Disk Drive Types
Epson EL 3S/33 Processor Chips Hard Disk Drive Types You can install an 80387SX, 33 MHz math coprocessor on the The table below lists types of hard disk drives you can use in main system board. the computer. Check this table and your hard disk manual to find the correct type number(s) for the hard disk drive(s) installed in the computer. -
Page 7: Information Reference List
I/F connector on the back may Installing Diskette Drives not fit into the option slot. Note that the EL 3S/33 system does not support older option Make sure that the drive type has been correctly selected in the SETUP program. - Page 8 Epson EL 3S/33 Epson EL 3S/33-8 5/28/93...