GRAFIKA 3B/KEEN-2531 Motherboard Settings and Configuration

DTK COMPUTER, INC.

GRAFIKA 3B/KEEN-2531

Processor
80386SX
Processor Speed
25MHz
Chip Set
Unidentified
Max. Onboard DRAM
16MB (8MB on external memory card)
Cache
None
BIOS
DTK
Dimensions
330mm x 218mm
I/O Options
32-bit external memory card (PEI-307)
NPU Options
80387SX/3167

CONNECTIONS
Purpose
Location
Purpose
Location
Power LED & keylock
J1
Turbo switch
J4
Speaker
J2
Reset switch
J5
Turbo LED
J3
32-bit system memory card
SL1

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
Factory configured - do not alter
SW1/7
Off
»
Page interleave mode enabled
SW1/8
On

Page mode enabled
SW1/8
Off
»
NPU disabled
W1
pins 2 & 3 closed

NPU enabled
W1
pins 1 & 2 closed

Monitor type select monochrome
W2
pins 1 & 2 closed

Monitor type select color
W2
pins 2 & 3 closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
1MB
(4) 256K x 9
NONE
NONE
NONE
2MB
(4) 256K x 9
(4) 256K x 9
NONE
NONE
3MB
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
NONE
4MB (A)
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
4MB (B)
(4) 1M x 9
NONE
NONE
NONE
5MB
(4) 1M x 9
(4) 256K x 9
NONE
NONE
6MB
(4) 256K x 9
(4) 256K x 9
(4) 1M x 9
NONE
7MB
(4) 256K x 9
(4) 256K x 9
(4) 1M x 9
(4) 256K x 9
8MB
(4) 1M x 9
(4) 1M x 9
NONE
NONE
9MB
(4) 1M x 9
(4) 1M x 9
(4) 256K x 9
NONE
10MB
(4) 1M x 9
(4) 1M x 9
(4) 256K x 9
(4) 256K x 9
12MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
NONE
13MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
(4) 256K x 9
16MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
Note: Banks 2 & 3 are located on the external memory card.

DRAM SWITCH CONFIGURATION
Size
SW1/1
SW1/2
SW1/3
SW1/4
Size
Off
On
On
On
1MB
On
Off
On
On
2MB
Off
Off
Off
Off
3MB
Off
On
Off
On
4MB (A)
On
On
On
Off
4MB (B)
Off
Off
Off
Off
5MB
Off
On
Off
On
6MB
On
Off
Off
On
7MB
Off
Off
Off
On
8MB
On
On
On
Off
9MB
Off
On
On
Off
10MB
On
Off
On
Off
12MB
On
On
Off
Off
13MB
Off
On
Off
Off
16MB
On
On
On
On

DRAM WAIT STATE CONFIGURATION
Write wait state
Read wait state
SW1/5
SW1/6
»
1
2
On
Off
»
1
3
Off
On
»
2
3
On
On

CPU SPEED CONFIGURATION
Speed
J4
12.5MHz
pins 1 & 2 closed
Controlled by keyboard
pins 2 & 3 closed
25MHz
Open

DRAM JUMPER CONFIGURATION
Size
W1
W2
W3
W4
W5
W6
W7
1MB
N/A
N/A
Open
N/A
N/A
N/A
N/A
2MB
N/A
N/A
Open
N/A
N/A
N/A
N/A
3MB
2 & 3
N/A
Closed
2 & 3
N/A
2 & 3
N/A
4MB (A)
2 & 3
2 & 3
Open
2 & 3
2 & 3
2 & 3
2 & 3
4MB (B)
N/A
N/A
Closed
N/A
N/A
N/A
N/A
5MB
N/A
N/A
Open
N/A
N/A
N/A
N/A
6MB
2 & 3
N/A
Closed
2 & 3
N/A
2 & 3
N/A
7MB
2 & 3
2 & 3
Closed
2 & 3
2 & 3
2 & 3
2 & 3
8MB
N/A
N/A
Open
N/A
N/A
N/A
N/A
9MB
2 & 3
N/A
Closed
2 & 3
N/A
2 & 3
N/A
10MB
2 & 3
2 & 3
Closed
2 & 3
2 & 3
2 & 3
2 & 3
12MB
1 & 2
N/A
Closed
1 & 2
N/A
1 & 2
N/A
13MB
1 & 2
2 & 3
Closed
1 & 2
2 & 3
1 & 2
2 & 3
16MB
1 & 2
1 & 2
Closed
1 & 2
1 & 2
1 & 2
1 & 2
Note: Pins designated should be in the closed position. Banks 0 & 1 are located on the mainboard.

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GRAFIKA 3B/KEEN-2531 Motherboard Settings and Configuration

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Processor	80386SX
Processor Speed	25MHz
Chip Set	Unidentified
Max. Onboard DRAM	16MB (8MB on external memory card)
Cache	None
BIOS	DTK
Dimensions	330mm x 218mm
I/O Options	32-bit external memory card (PEI-307)
NPU Options	80387SX/3167

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	J1	Turbo switch	J4
Speaker	J2	Reset switch	J5
Turbo LED	J3	32-bit system memory card	SL1

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Factory configured - do not alter	SW1/7	Off
»	Page interleave mode enabled	SW1/8	On
	Page mode enabled	SW1/8	Off
»	NPU disabled	W1	pins 2 & 3 closed
	NPU enabled	W1	pins 1 & 2 closed
	Monitor type select monochrome	W2	pins 1 & 2 closed
	Monitor type select color	W2	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
1MB	(4) 256K x 9	NONE	NONE	NONE
2MB	(4) 256K x 9	(4) 256K x 9	NONE	NONE
3MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	NONE
4MB (A)	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9
4MB (B)	(4) 1M x 9	NONE	NONE	NONE
5MB	(4) 1M x 9	(4) 256K x 9	NONE	NONE
6MB	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9	NONE
7MB	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9	(4) 256K x 9
8MB	(4) 1M x 9	(4) 1M x 9	NONE	NONE
9MB	(4) 1M x 9	(4) 1M x 9	(4) 256K x 9	NONE
10MB	(4) 1M x 9	(4) 1M x 9	(4) 256K x 9	(4) 256K x 9
12MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	NONE
13MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 256K x 9
16MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9
Note: Banks 2 & 3 are located on the external memory card.

DRAM SWITCH CONFIGURATION
Size	SW1/1	SW1/2	SW1/3	SW1/4
Size	Off	On	On	On
1MB	On	Off	On	On
2MB	Off	Off	Off	Off
3MB	Off	On	Off	On
4MB (A)	On	On	On	Off
4MB (B)	Off	Off	Off	Off
5MB	Off	On	Off	On
6MB	On	Off	Off	On
7MB	Off	Off	Off	On
8MB	On	On	On	Off
9MB	Off	On	On	Off
10MB	On	Off	On	Off
12MB	On	On	Off	Off
13MB	Off	On	Off	Off
16MB	On	On	On	On

DRAM WAIT STATE CONFIGURATION
Write wait state		Read wait state	SW1/5	SW1/6
»	1	2	On	Off
»	1	3	Off	On
»	2	3	On	On

CPU SPEED CONFIGURATION
Speed	J4
12.5MHz	pins 1 & 2 closed
Controlled by keyboard	pins 2 & 3 closed
25MHz	Open

DRAM JUMPER CONFIGURATION
Size	W1	W2	W3	W4	W5	W6	W7
1MB	N/A	N/A	Open	N/A	N/A	N/A	N/A
2MB	N/A	N/A	Open	N/A	N/A	N/A	N/A
3MB	2 & 3	N/A	Closed	2 & 3	N/A	2 & 3	N/A
4MB (A)	2 & 3	2 & 3	Open	2 & 3	2 & 3	2 & 3	2 & 3
4MB (B)	N/A	N/A	Closed	N/A	N/A	N/A	N/A
5MB	N/A	N/A	Open	N/A	N/A	N/A	N/A
6MB	2 & 3	N/A	Closed	2 & 3	N/A	2 & 3	N/A
7MB	2 & 3	2 & 3	Closed	2 & 3	2 & 3	2 & 3	2 & 3
8MB	N/A	N/A	Open	N/A	N/A	N/A	N/A
9MB	2 & 3	N/A	Closed	2 & 3	N/A	2 & 3	N/A
10MB	2 & 3	2 & 3	Closed	2 & 3	2 & 3	2 & 3	2 & 3
12MB	1 & 2	N/A	Closed	1 & 2	N/A	1 & 2	N/A
13MB	1 & 2	2 & 3	Closed	1 & 2	2 & 3	1 & 2	2 & 3
16MB	1 & 2	1 & 2	Closed	1 & 2	1 & 2	1 & 2	1 & 2
Note: Pins designated should be in the closed position. Banks 0 & 1 are located on the mainboard.