EQUITY 4 SERIES Motherboard Settings and Configuration

EPSON, INC.

EQUITY 4 SERIES

Processor
80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed
20/25/33/50(internal)/66(internal) MHz
Chip Set
Toshiba
Max. Onboard DRAM
32MB
SRAM Cache
None
BIOS
Award
Dimensions
330mm x 218mm
I/O Options
Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, PS/2 keyboard connector, proprietary riser card, serial port (2), VGA feature connector, VGA port
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
PS/2 mouse port
CN2
Reserved for future use
CN11
PS/2 keyboard
CN3
Speaker
CN12
Serial port 2
CN4
Reserved for future use
CN13
Serial port 1
CN5
Reserved for future use
CN14
Parallel port
CN6
Reserved for future use
CN15
VGA port
CN7
IDE interface LED
CN16
VGA feature connector
CN8
Power LED
CN17
Floppy drive interface
CN9
Proprietary riser card
SLOT1
IDE interface
CN10

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Monitor type select monochrome
J5
Open

Monitor type select color
J5
Closed
»
Onboard video enabled
J6
pins 1 & 2 closed

Onboard video disabled
J6
pins 2 & 3 closed
»
CMOS memory normal operation
J7
Open

CMOS memory clear
J7
Closed
»
Factory configured - do not alter
J8
pins 1 & 2 closed
»
Factory configured - do not alter
J13
pins 2 & 3 closed
»
Factory configured - do not alter
J14
pins 2 & 3 closed
»
Factory configured - do not alter
J15
pins 2 & 3 closed
»
Fast Gate A20 enabled
J18
pins 1 & 2 closed

Fast Gate A20 disabled
J18
pins 2 & 3 closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
1MB
(1) 256K x 36
NONE
2MB
(1) 256K x 36
(1) 256K x 36
4MB
(1) 1M x 36
NONE
5MB
(1) 256K x 36
(1) 1M x 36
8MB
(1) 1M x 36
(1) 1M x 36
16MB
(1) 4M x 36
NONE
17MB
(1) 256K x 36
(1) 4M x 36
20MB
(1) 1M x 36
(1) 4M x 36
32MB
(1) 4M x 36
(1) 4M x 36

CPU SPEED CONFIGURATION
Speed
J19
J20
J21
J22
20MHz
Closed
Open
Closed
Open
25/50i MHz
Open
Open
Closed
Open
33/66i MHz
Closed
Open
Open
Open

CPU TYPE CONFIGURATION
CPU
Type
J10
J11
J12
J23
80486SX
PQFP
pins 1 & 2
pins 1 & 2
pins 2 & 3
pins 1 & 2
80486SX
PGA
pins 2 & 3
pins 2 & 3
Open
pins 2 & 3
80487SX
PGA
pins 1 & 2
pins 1 & 2
pins 2 & 3
pins 2 & 3
80486DX
PGA
pins 1 & 2
pins 1 & 2
pins 1 & 2
pins 2 & 3
Note:Pins designated should be in the closed position.

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EQUITY 4 SERIES Motherboard Settings and Configuration

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Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed	20/25/33/50(internal)/66(internal) MHz
Chip Set	Toshiba
Max. Onboard DRAM	32MB
SRAM Cache	None
BIOS	Award
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, PS/2 keyboard connector, proprietary riser card, serial port (2), VGA feature connector, VGA port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
PS/2 mouse port	CN2	Reserved for future use	CN11
PS/2 keyboard	CN3	Speaker	CN12
Serial port 2	CN4	Reserved for future use	CN13
Serial port 1	CN5	Reserved for future use	CN14
Parallel port	CN6	Reserved for future use	CN15
VGA port	CN7	IDE interface LED	CN16
VGA feature connector	CN8	Power LED	CN17
Floppy drive interface	CN9	Proprietary riser card	SLOT1
IDE interface	CN10

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select monochrome	J5	Open
	Monitor type select color	J5	Closed
»	Onboard video enabled	J6	pins 1 & 2 closed
	Onboard video disabled	J6	pins 2 & 3 closed
»	CMOS memory normal operation	J7	Open
	CMOS memory clear	J7	Closed
»	Factory configured - do not alter	J8	pins 1 & 2 closed
»	Factory configured - do not alter	J13	pins 2 & 3 closed
»	Factory configured - do not alter	J14	pins 2 & 3 closed
»	Factory configured - do not alter	J15	pins 2 & 3 closed
»	Fast Gate A20 enabled	J18	pins 1 & 2 closed
	Fast Gate A20 disabled	J18	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(1) 256K x 36	NONE
2MB	(1) 256K x 36	(1) 256K x 36
4MB	(1) 1M x 36	NONE
5MB	(1) 256K x 36	(1) 1M x 36
8MB	(1) 1M x 36	(1) 1M x 36
16MB	(1) 4M x 36	NONE
17MB	(1) 256K x 36	(1) 4M x 36
20MB	(1) 1M x 36	(1) 4M x 36
32MB	(1) 4M x 36	(1) 4M x 36

CPU SPEED CONFIGURATION
Speed	J19	J20	J21	J22
20MHz	Closed	Open	Closed	Open
25/50i MHz	Open	Open	Closed	Open
33/66i MHz	Closed	Open	Open	Open

CPU TYPE CONFIGURATION
CPU	Type	J10	J11	J12	J23
80486SX	PQFP	pins 1 & 2	pins 1 & 2	pins 2 & 3	pins 1 & 2
80486SX	PGA	pins 2 & 3	pins 2 & 3	Open	pins 2 & 3
80487SX	PGA	pins 1 & 2	pins 1 & 2	pins 2 & 3	pins 2 & 3
80486DX	PGA	pins 1 & 2	pins 1 & 2	pins 1 & 2	pins 2 & 3
Note:Pins designated should be in the closed position.