S680 Motherboard Settings and Configuration

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S680

Processor
80386SX
Processor Speed
16MHz
Chip Set
Intel
Max. Onboard DRAM
2MB
Cache
None
BIOS
AMI
Dimensions
330.2mm x 218.4mm
I/O Options
None
NPU Options
80387SX

CONNECTIONS
Purpose
Location
Purpose
Location
Reset switch
CN1
Speaker
CN4
Turbo switch
CN2
Power LED & keylock
CN7
Turbo LED
CN3
External battery
CN8
Note:CN2 can be connected to a turbo switch, however the manufacturer recommends that the computer be turned off before changing the CPU speed.

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
CPU speed select fast
CN2
closed

CPU speed select slow
CN2
open
»
Battery select internal
CN9
pins 2 & 3 closed

Battery select external
CN9
pins 1 & 2 closed
»
Monitor type select monochrome
JP2
open

Monitor type select color
JP2
closed
»
BIOS type select 2764
JP4
pins 1 & 2 closed

BIOS type select 27128
JP4
pins 2 & 3 closed
»
Factory configured - do not alter
JP10
unknown
»
Factory configured - do not alter
JP11
unknown
»
Factory configured - do not alter
JP12
unknown

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
E1 - E8
512KB
(18) 41256
NONE
NONE
NONE
pins 1 & 2 closed
512KB
NONE
NONE
(2) 256K x 9
NONE
pins 2 & 3 closed
1MB
(18) 41256
(18) 41256
NONE
NONE
pins 1 & 2 closed
1MB
NONE
NONE
(2) 256K x 9
(2) 256K x 9
pins 2 & 3 closed
1.5MB
(18) 41256
(18) 41256
(2) 256K x 9
NONE
pins 1 & 2 closed
2MB
(18) 41256
(18) 41256
(2) 256K x 9
(2) 256K x 9
pins 1 & 2 closed
2MB
(18) 411000
NONE
NONE
NONE
pins 1 & 2 closed
2MB
NONE
NONE
(2) 1M x 9
NONE
pins 2 & 3 closed
4MB
(18) 411000
(18) 411000
NONE
NONE
pins 1 & 2 closed
4MB
NONE
NONE
(2) 1M x 9
(2) 1M x 9
pins 2 & 3 closed
6MB
(18) 411000
(18) 411000
(2) 1M x 9
NONE
pins 1 & 2 closed
8MB
(18) 411000
(18) 411000
(2) 1M x 9
(2) 1M x 9
pins 1 & 2 closed

DRAM MODE CONFIGURATION
Mode
DRAM type
JP8
JP9
Page Mode (Four page)
100ns
pins 1 & 2 closed
pins 1 & 2 closed
Page Mode (One page)
100ns
pins 2 & 3 closed
pins 1 & 2 closed
Fast mode
100ns
pins 1 & 2 closed
pins 2 & 3 closed
Slow mode
120ns
pins 2 & 3 closed
pins 2 & 3 closed

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S680 Motherboard Settings and Configuration

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Processor	80386SX
Processor Speed	16MHz
Chip Set	Intel
Max. Onboard DRAM	2MB
Cache	None
BIOS	AMI
Dimensions	330.2mm x 218.4mm
I/O Options	None
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	CN1	Speaker	CN4
Turbo switch	CN2	Power LED & keylock	CN7
Turbo LED	CN3	External battery	CN8
Note:CN2 can be connected to a turbo switch, however the manufacturer recommends that the computer be turned off before changing the CPU speed.

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	CPU speed select fast	CN2	closed
	CPU speed select slow	CN2	open
»	Battery select internal	CN9	pins 2 & 3 closed
	Battery select external	CN9	pins 1 & 2 closed
»	Monitor type select monochrome	JP2	open
	Monitor type select color	JP2	closed
»	BIOS type select 2764	JP4	pins 1 & 2 closed
	BIOS type select 27128	JP4	pins 2 & 3 closed
»	Factory configured - do not alter	JP10	unknown
»	Factory configured - do not alter	JP11	unknown
»	Factory configured - do not alter	JP12	unknown

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3	E1 - E8
512KB	(18) 41256	NONE	NONE	NONE	pins 1 & 2 closed
512KB	NONE	NONE	(2) 256K x 9	NONE	pins 2 & 3 closed
1MB	(18) 41256	(18) 41256	NONE	NONE	pins 1 & 2 closed
1MB	NONE	NONE	(2) 256K x 9	(2) 256K x 9	pins 2 & 3 closed
1.5MB	(18) 41256	(18) 41256	(2) 256K x 9	NONE	pins 1 & 2 closed
2MB	(18) 41256	(18) 41256	(2) 256K x 9	(2) 256K x 9	pins 1 & 2 closed
2MB	(18) 411000	NONE	NONE	NONE	pins 1 & 2 closed
2MB	NONE	NONE	(2) 1M x 9	NONE	pins 2 & 3 closed
4MB	(18) 411000	(18) 411000	NONE	NONE	pins 1 & 2 closed
4MB	NONE	NONE	(2) 1M x 9	(2) 1M x 9	pins 2 & 3 closed
6MB	(18) 411000	(18) 411000	(2) 1M x 9	NONE	pins 1 & 2 closed
8MB	(18) 411000	(18) 411000	(2) 1M x 9	(2) 1M x 9	pins 1 & 2 closed

DRAM MODE CONFIGURATION
Mode	DRAM type	JP8	JP9
Page Mode (Four page)	100ns	pins 1 & 2 closed	pins 1 & 2 closed
Page Mode (One page)	100ns	pins 2 & 3 closed	pins 1 & 2 closed
Fast mode	100ns	pins 1 & 2 closed	pins 2 & 3 closed
Slow mode	120ns	pins 2 & 3 closed	pins 2 & 3 closed