RACER-286 Motherboard Settings and Configuration

DIAMOND FLOWER, INC.

RACER-286

Processor
80286 (exact location unknown)
Processor Speed
6/12.5MHz
Chip Set
Suntac
Max. Onboard DRAM
4MB
Cache
None
BIOS
Unidentified
Dimensions
330mm x 218mm
I/O Options
None
NPU Options
80287

CONNECTIONS
Purpose
Location
Purpose
Location
Power LED & keylock
J20
External battery
JP12
Turbo LED
JP8
Reset switch
JP6
Speaker
JP10

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
Wait state select 0 wait states
JP5
Closed

Wait state select 1 wait state
JP5
Open
»
Clock speed control keyboard
JP9
pins 1 & 2 closed

Clock speed control DIP switch
JP9
pins 2 & 3 closed
»
On board battery enabled
JP11
Closed

On board battery disabled
JP11
Open
»
Monitor type select color
SW1/2
On

Monitor type select monochrome
SW1/2
Off
»
Parity check enabled
SW1/3
On

Parity check disabled
SW1/3
Off
»
Port address select 0E8H
SW1/4
On

Port address select 098H
SW1/4
Off
»
BIOS type select 27128
SW1/5
On

BIOS type select 27256
SW1/5
Off

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
512KB
(16) 41256
NONE
NONE
NONE
512KB
NONE
NONE
(4) 44256
NONE
640KB
(16) 41256
(16) 4164
NONE
NONE
1MB
(16) 41256
(16) 41256
NONE
NONE
1MB
NONE
NONE
(4) 44256
(4) 44256
2MB
(16) 411000
NONE
NONE

4MB
(16) 411000
(16) 411000
NONE
NONE
Note: When installing the above chips, do not use sockets IC9, IC21, IC36 & IC45.

DRAM CONFIGURATION (PARITY CHIP)
Size
IC9, IC21
IC36, IC45
U38 - U39
U40 - U41
512KB
(2) 41256
NONE
NONE
NONE
512KB
NONE
NONE
(2) 41256
NONE
640KB
(2) 41256
(2) 4164
NONE
NONE
1MB
(2) 41256
(2) 41256
NONE
NONE
1MB
NONE
NONE
(2) 41256
(2) 41256
2MB
(2) 411000
NONE
NONE
NONE
4MB
(2) 411000
(2) 411000
NONE
NONE
Note:This section is used only if parity chips are installed.

DRAM SWITCH CONFIGURATION
Size
SW1/6
SW1/7
SW1/8
Conventional
Extended
Expanded
512KB
On
On
On
512KB
0KB
0KB
640KB
On
On
Off
640KB
0KB
0KB
1MB
On
Off
On
640KB
384KB
0KB
1MB
On
Off
Off
640KB
0KB
384KB
2MB
Off
On
On
640KB
1408KB
0KB
2MB
Off
On
Off
640KB
0KB
1408KB
4MB
Off
Off
On
640KB
3456KB
0KB
4MB
Off
Off
Off
640KB
0KB
3456KB

CPU SPEED CONFIGURATION
Speed
JP7
SW1/1
6MHz
Open
On
12.5MHz
Closed
Off

KEYBOARD BIOS CONFIGURATION
Connector
JP1
JP2
JP3
JP4
8742
pin 32
pin 27
pin 23
pin30

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RACER-286 Motherboard Settings and Configuration

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Processor	80286 (exact location unknown)
Processor Speed	6/12.5MHz
Chip Set	Suntac
Max. Onboard DRAM	4MB
Cache	None
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80287

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	J20	External battery	JP12
Turbo LED	JP8	Reset switch	JP6
Speaker	JP10

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Wait state select 0 wait states	JP5	Closed
	Wait state select 1 wait state	JP5	Open
»	Clock speed control keyboard	JP9	pins 1 & 2 closed
	Clock speed control DIP switch	JP9	pins 2 & 3 closed
»	On board battery enabled	JP11	Closed
	On board battery disabled	JP11	Open
»	Monitor type select color	SW1/2	On
	Monitor type select monochrome	SW1/2	Off
»	Parity check enabled	SW1/3	On
	Parity check disabled	SW1/3	Off
»	Port address select 0E8H	SW1/4	On
	Port address select 098H	SW1/4	Off
»	BIOS type select 27128	SW1/5	On
	BIOS type select 27256	SW1/5	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
512KB	(16) 41256	NONE	NONE	NONE
512KB	NONE	NONE	(4) 44256	NONE
640KB	(16) 41256	(16) 4164	NONE	NONE
1MB	(16) 41256	(16) 41256	NONE	NONE
1MB	NONE	NONE	(4) 44256	(4) 44256
2MB	(16) 411000	NONE	NONE
4MB	(16) 411000	(16) 411000	NONE	NONE
Note: When installing the above chips, do not use sockets IC9, IC21, IC36 & IC45.

DRAM CONFIGURATION (PARITY CHIP)
Size	IC9, IC21	IC36, IC45	U38 - U39	U40 - U41
512KB	(2) 41256	NONE	NONE	NONE
512KB	NONE	NONE	(2) 41256	NONE
640KB	(2) 41256	(2) 4164	NONE	NONE
1MB	(2) 41256	(2) 41256	NONE	NONE
1MB	NONE	NONE	(2) 41256	(2) 41256
2MB	(2) 411000	NONE	NONE	NONE
4MB	(2) 411000	(2) 411000	NONE	NONE
Note:This section is used only if parity chips are installed.

DRAM SWITCH CONFIGURATION
Size	SW1/6	SW1/7	SW1/8	Conventional	Extended	Expanded
512KB	On	On	On	512KB	0KB	0KB
640KB	On	On	Off	640KB	0KB	0KB
1MB	On	Off	On	640KB	384KB	0KB
1MB	On	Off	Off	640KB	0KB	384KB
2MB	Off	On	On	640KB	1408KB	0KB
2MB	Off	On	Off	640KB	0KB	1408KB
4MB	Off	Off	On	640KB	3456KB	0KB
4MB	Off	Off	Off	640KB	0KB	3456KB

CPU SPEED CONFIGURATION
Speed	JP7	SW1/1
6MHz	Open	On
12.5MHz	Closed	Off

KEYBOARD BIOS CONFIGURATION
Connector	JP1	JP2	JP3	JP4
8742	pin 32	pin 27	pin 23	pin30