MICRO 286-12 Motherboard Settings and Configuration

UNIDENTIFIED

MICRO 286-12

Processor
80286
Processor Speed
12MHz
Chip Set
Unidentified
Max. Onboard DRAM
4MB
Cache
None
BIOS
AMI
Dimensions
330mm x 218mm
I/O Options
None
NPU Options
80287

CONNECTIONS
Purpose
Location
Purpose
Location
Speaker
J1
Turbo LED
J4
Reset switch
J2
External battery
J7
Power LED & keylock
J3
Turbo switch
J8

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
Wait states select 0
W1
pins 1 & 2 closed

Wait state select 1
W1
pins 2 & 3 closed
»
Factory configured - do not alter
W2
pins 2 & 3 closed
»
BIOS type select 27256
W6
pins 1 & 2 closed

BIOS type select 27128
W6
pins 2 & 3 closed
»
Monitor type select color
W7
Closed

Monitor type select monochrome
W7
Open
»
Parity check enabled
W9
pins 1 & 2 closed

Parity check disabled
W9
pins 2 & 3 closed
»
Bus speed select fast
SW1/2
On

Bus speed select normal
SW1/2
Off

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
256KB 1
(4) 44256
NONE
NONE
NONE
256KB
NONE
NONE
(2) 256K x 9
NONE
512KB 2
(4) 44256
NONE
NONE
NONE
512KB
NONE
NONE
(2) 256K x 9
(2) 256K x 9
512KB
NONE
NONE
(2) 1M x 9
NONE
640KB 3
(4) 44256
(4) 4464
NONE
NONE
640KB
NONE
NONE
(2) 256K x 9
(2) 256K x 9
640KB
NONE
NONE
(2) 1M x 9
NONE
1MB 2
(4) 44256
(4) 44256
NONE
NONE
1MB
NONE
NONE
(2) 256K x 9
(2) 256K x 9
2MB
NONE
NONE
(2) 1M x 9
NONE
4MB
NONE
NONE
(2) 1M x 9
(2) 1M x 9
Note:If using only SIMMs don't install any chips in P-0 or P-1.
Note 1 :If parity checking is enabled, install (2) 41256 in P-0
Note 2 :If parity checking is enabled, install (2) 41256 in P-0 and (2) 41256 in P-1
Note 3 :If parity checking is enabled, install (2) 41256 in P-0 and (2) 4164 in P-0

DRAM SWITCH CONFIGURATION
Size
SW1/1
SW1/2
SW1/3
256KB 1
On
On
On
256KB
On
On
On
512KB 2
On
Off
On
512KB
On
Off
On
512KB
Off
On
On
640KB 3
On
On
Off
640KB
On
On
Off
640KB
Off
Off
On
1MB 2
On
Off
Off
1MB
On
Off
Off
2MB
Off
On
Off
4MB
Off
Off
Off

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MICRO 286-12 Motherboard Settings and Configuration

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Processor	80286
Processor Speed	12MHz
Chip Set	Unidentified
Max. Onboard DRAM	4MB
Cache	None
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80287

CONNECTIONS
Purpose	Location	Purpose	Location
Speaker	J1	Turbo LED	J4
Reset switch	J2	External battery	J7
Power LED & keylock	J3	Turbo switch	J8

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Wait states select 0	W1	pins 1 & 2 closed
	Wait state select 1	W1	pins 2 & 3 closed
»	Factory configured - do not alter	W2	pins 2 & 3 closed
»	BIOS type select 27256	W6	pins 1 & 2 closed
	BIOS type select 27128	W6	pins 2 & 3 closed
»	Monitor type select color	W7	Closed
	Monitor type select monochrome	W7	Open
»	Parity check enabled	W9	pins 1 & 2 closed
	Parity check disabled	W9	pins 2 & 3 closed
»	Bus speed select fast	SW1/2	On
	Bus speed select normal	SW1/2	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
256KB 1	(4) 44256	NONE	NONE	NONE
256KB	NONE	NONE	(2) 256K x 9	NONE
512KB 2	(4) 44256	NONE	NONE	NONE
512KB	NONE	NONE	(2) 256K x 9	(2) 256K x 9
512KB	NONE	NONE	(2) 1M x 9	NONE
640KB 3	(4) 44256	(4) 4464	NONE	NONE
640KB	NONE	NONE	(2) 256K x 9	(2) 256K x 9
640KB	NONE	NONE	(2) 1M x 9	NONE
1MB 2	(4) 44256	(4) 44256	NONE	NONE
1MB	NONE	NONE	(2) 256K x 9	(2) 256K x 9
2MB	NONE	NONE	(2) 1M x 9	NONE
4MB	NONE	NONE	(2) 1M x 9	(2) 1M x 9
Note:If using only SIMMs don't install any chips in P-0 or P-1. Note 1 :If parity checking is enabled, install (2) 41256 in P-0 Note 2 :If parity checking is enabled, install (2) 41256 in P-0 and (2) 41256 in P-1 Note 3 :If parity checking is enabled, install (2) 41256 in P-0 and (2) 4164 in P-0

DRAM SWITCH CONFIGURATION
Size	SW1/1	SW1/2	SW1/3
256KB 1	On	On	On
256KB	On	On	On
512KB 2	On	Off	On
512KB	On	Off	On
512KB	Off	On	On
640KB 3	On	On	Off
640KB	On	On	Off
640KB	Off	Off	On
1MB 2	On	Off	Off
1MB	On	Off	Off
2MB	Off	On	Off
4MB	Off	Off	Off