PKM-2500 (VER. 1.20) Motherboard Settings and Configuration

DTK COMPUTER, INC.

PKM-2500 (VER. 1.20)

Processor
80486SX
Processor Speed
25MHz
Chip Set
VLSI
Max. Onboard DRAM
16MB (8MB on external memory card)
Cache
64/256KB
BIOS
DTK/Phoenix
Dimensions
355mm x 305mm
I/O Options
32-bit external memory card (PEI-306)
NPU Options
4167

CONNECTIONS
Purpose
Location
Purpose
Location
Chassis fan power
J1
Speaker
J5
Power LED & keylock
J2
Turbo switch
J6
Turbo LED
J3
32-bit external memory card
SL1
Reset switch
J4

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position

BIOS type select 27256
W3
pins 1 & 2 closed

BIOS type select 27512
W3
pins 2 & 3 closed
»
Factory configured - do not alter
W6
N/A

Monitor type select color
SW1/4
On

Monitor type select monochrome
SW1/4
Off

CACHE CONFIGURATION
Size
Bank 0
TAG 0
TAG 1
64KB
(8) 16K x 4
(1) 16K x 1
(2) 16K x 4
256KB
(8) 64K x 4
(1) 64K x 1
(2) 64K x 4

CACHE JUMPER CONFIGURATION
Size
W1
W2
64KB
pins 1 & 2 closed
pins 1 & 2 closed
256KB
pins 2 & 3 closed
pins 2 & 3 closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 0A
Bank 1A
Bank 2A
1MB
(4) 256K x 9
NONE
NONE
NONE
NONE
2MB
(4) 256K x 9
(4) 256K x 9
NONE
NONE
NONE
3MB
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
NONE
NONE
4MB (A)
(4) 1M x 9
NONE
NONE
NONE
NONE
4MB (B)
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
NONE
5MB
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
6MB
(4) 256K x 9
(4) 256K x 9
(4) 1M x 9
NONE
NONE
8MB
(4) 1M x 9
(4) 1M x 9
NONE
NONE
NONE
9MB
(4) 1M x 9
(4) 1M x 9
(4) 256K x 9
NONE
NONE
10MB (A)
(4) 1M x 9
(4) 1M x 9
(4) 256K x 9
(4) 256K x 9
NONE
10MB (B)
(4) 256K x 9
(4) 256K x 9
(4) 1M x 9
(4) 1M x 9
NONE
11MB
(4) 1M x 9
(4) 1M x 9
(4) 256K x 9
(4) 256K x 9
(4) 256K x 9
12MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
NONE
NONE
14MB
(4) 256K x 9
(4) 256K x 9
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
16MB
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
(4) 1M x 9
NONE
Note: Banks 0A, 1A, and 2A are located on the external memory card

DRAM JUMPER CONFIGURATION
Size
W1
W2
W3
W4
W5
1MB
N/A
N/A
N/A
2 & 3
2 & 3
2MB
N/A
N/A
N/A
2 & 3
2 & 3
3MB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
4MB (A)
N/A
N/A
N/A
1 & 2
1 & 2
4MB (B)
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
5MB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
6MB
1 & 2
1 & 2
1 & 2
2 & 3
2 & 3
8MB
N/A
N/A
N/A
1 & 2
1 & 2
9MB
2 & 3
2 & 3
2 & 3
1 & 2
1 & 2
10MB (A)
2 & 3
2 & 3
2 & 3
1 & 2
1 & 2
10MB (B)
1 & 2
1 & 2
1 & 2
2 & 3
2 & 3
11MB
2 & 3
2 & 3
2 & 3
1 & 2
1 & 2
12MB
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
14MB
1 & 2
1 & 2
1 & 2
2 & 3
2 & 3
16MB
1 & 2
1 & 2
1 & 2
1 & 2
1 & 2
Note: W4, W5 are located on the mainboard.

DRAM SWITCH CONFIGURATION (CON’T)
Size
SW1/1
SW1/2
SW1/3
1MB
On
On
On
2MB
On
On
On
3MB
On
On
On
4MB (A)
On
On
Off
4MB (B)
On
On
On
5MB
On
Off
On
6MB
On
Off
On
8MB
On
Off
Off
9MB
Off
On
Off
10MB (A)
Off
On
Off
10MB (B)
Off
On
On
11MB
Off
On
Off
12MB
Off
On
Off
14MB
Off
Off
On
16MB
Off
Off
Off
Note: SW1 is located on the mainboard.

DRAM SWITCH CONFIGURATION (CON’T)
Size
SW2/1
SW2/2
SW2/3
SW2/4
SW2/5
1MB
N/A
N/A
N/A
N/A
N/A
2MB
N/A
N/A
N/A
N/A
N/A
3MB
On
On
Off
Off
On
4MB (A)
N/A
N/A
N/A
N/A
N/A
4MB (B)
On
On
Off
Off
On
5MB
On
On
Off
Off
On
6MB
On
Off
Off
Off
On
8MB
N/A
N/A
N/A
N/A
N/A
9MB
On
On
On
Off
Off
10MB (A)
On
On
On
Off
Off
10MB (B)
On
Off
Off
Off
On
11MB
On
On
On
Off
Off
12MB
On
Off
On
Off
Off
14MB
On
Off
Off
Off
On
16MB
On
Off
On
Off
Off
Note: SW2 is located on the memory card

DRAM SWITCH CONFIGURATION (CON’T)
Size
SW2/6
SW2/7
SW2/8
SW2/9
SW2/10
1MB
N/A
N/A
N/A
N/A
N/A
2MB
N/A
N/A
N/A
N/A
N/A
3MB
Off
Off
On
On
N/A
4MB (A)
N/A
N/A
N/A
N/A
N/A
4MB (B)
Off
Off
On
On
N/A
5MB
Off
Off
On
On
N/A
6MB
Off
Off
On
On
N/A
8MB
N/A
N/A
N/A
N/A
N/A
9MB
Off
Off
On
On
N/A
10MB (A)
Off
Off
On
On
N/A
10MB (B)
Off
Off
On
On
N/A
11MB
Off
Off
On
On
N/A
12MB
Off
Off
On
On
N/A
14MB
Off
Off
On
On
N/A
16MB
Off
Off
On
On
N/A
Note: SW2 is located on the memory card.

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PKM-2500 (VER. 1.20) Motherboard Settings and Configuration

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Processor	80486SX
Processor Speed	25MHz
Chip Set	VLSI
Max. Onboard DRAM	16MB (8MB on external memory card)
Cache	64/256KB
BIOS	DTK/Phoenix
Dimensions	355mm x 305mm
I/O Options	32-bit external memory card (PEI-306)
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
Chassis fan power	J1	Speaker	J5
Power LED & keylock	J2	Turbo switch	J6
Turbo LED	J3	32-bit external memory card	SL1
Reset switch	J4

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
	BIOS type select 27256	W3	pins 1 & 2 closed
	BIOS type select 27512	W3	pins 2 & 3 closed
»	Factory configured - do not alter	W6	N/A
	Monitor type select color	SW1/4	On
	Monitor type select monochrome	SW1/4	Off

CACHE CONFIGURATION
Size	Bank 0	TAG 0	TAG 1
64KB	(8) 16K x 4	(1) 16K x 1	(2) 16K x 4
256KB	(8) 64K x 4	(1) 64K x 1	(2) 64K x 4

CACHE JUMPER CONFIGURATION
Size	W1	W2
64KB	pins 1 & 2 closed	pins 1 & 2 closed
256KB	pins 2 & 3 closed	pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 0A	Bank 1A	Bank 2A
1MB	(4) 256K x 9	NONE	NONE	NONE	NONE
2MB	(4) 256K x 9	(4) 256K x 9	NONE	NONE	NONE
3MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	NONE	NONE
4MB (A)	(4) 1M x 9	NONE	NONE	NONE	NONE
4MB (B)	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	NONE
5MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9
6MB	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9	NONE	NONE
8MB	(4) 1M x 9	(4) 1M x 9	NONE	NONE	NONE
9MB	(4) 1M x 9	(4) 1M x 9	(4) 256K x 9	NONE	NONE
10MB (A)	(4) 1M x 9	(4) 1M x 9	(4) 256K x 9	(4) 256K x 9	NONE
10MB (B)	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9	(4) 1M x 9	NONE
11MB	(4) 1M x 9	(4) 1M x 9	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9
12MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	NONE	NONE
14MB	(4) 256K x 9	(4) 256K x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9
16MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	NONE
Note: Banks 0A, 1A, and 2A are located on the external memory card

DRAM JUMPER CONFIGURATION
Size	W1	W2	W3	W4	W5
1MB	N/A	N/A	N/A	2 & 3	2 & 3
2MB	N/A	N/A	N/A	2 & 3	2 & 3
3MB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
4MB (A)	N/A	N/A	N/A	1 & 2	1 & 2
4MB (B)	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
5MB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
6MB	1 & 2	1 & 2	1 & 2	2 & 3	2 & 3
8MB	N/A	N/A	N/A	1 & 2	1 & 2
9MB	2 & 3	2 & 3	2 & 3	1 & 2	1 & 2
10MB (A)	2 & 3	2 & 3	2 & 3	1 & 2	1 & 2
10MB (B)	1 & 2	1 & 2	1 & 2	2 & 3	2 & 3
11MB	2 & 3	2 & 3	2 & 3	1 & 2	1 & 2
12MB	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
14MB	1 & 2	1 & 2	1 & 2	2 & 3	2 & 3
16MB	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
Note: W4, W5 are located on the mainboard.

DRAM SWITCH CONFIGURATION (CON’T)
Size	SW1/1	SW1/2	SW1/3
1MB	On	On	On
2MB	On	On	On
3MB	On	On	On
4MB (A)	On	On	Off
4MB (B)	On	On	On
5MB	On	Off	On
6MB	On	Off	On
8MB	On	Off	Off
9MB	Off	On	Off
10MB (A)	Off	On	Off
10MB (B)	Off	On	On
11MB	Off	On	Off
12MB	Off	On	Off
14MB	Off	Off	On
16MB	Off	Off	Off
Note: SW1 is located on the mainboard.

DRAM SWITCH CONFIGURATION (CON’T)
Size	SW2/1	SW2/2	SW2/3	SW2/4	SW2/5
1MB	N/A	N/A	N/A	N/A	N/A
2MB	N/A	N/A	N/A	N/A	N/A
3MB	On	On	Off	Off	On
4MB (A)	N/A	N/A	N/A	N/A	N/A
4MB (B)	On	On	Off	Off	On
5MB	On	On	Off	Off	On
6MB	On	Off	Off	Off	On
8MB	N/A	N/A	N/A	N/A	N/A
9MB	On	On	On	Off	Off
10MB (A)	On	On	On	Off	Off
10MB (B)	On	Off	Off	Off	On
11MB	On	On	On	Off	Off
12MB	On	Off	On	Off	Off
14MB	On	Off	Off	Off	On
16MB	On	Off	On	Off	Off
Note: SW2 is located on the memory card

DRAM SWITCH CONFIGURATION (CON’T)
Size	SW2/6	SW2/7	SW2/8	SW2/9	SW2/10
1MB	N/A	N/A	N/A	N/A	N/A
2MB	N/A	N/A	N/A	N/A	N/A
3MB	Off	Off	On	On	N/A
4MB (A)	N/A	N/A	N/A	N/A	N/A
4MB (B)	Off	Off	On	On	N/A
5MB	Off	Off	On	On	N/A
6MB	Off	Off	On	On	N/A
8MB	N/A	N/A	N/A	N/A	N/A
9MB	Off	Off	On	On	N/A
10MB (A)	Off	Off	On	On	N/A
10MB (B)	Off	Off	On	On	N/A
11MB	Off	Off	On	On	N/A
12MB	Off	Off	On	On	N/A
14MB	Off	Off	On	On	N/A
16MB	Off	Off	On	On	N/A
Note: SW2 is located on the memory card.