MBVLSI-168 (V.2) Motherboard Settings and Configuration

DTK COMPUTER, INC.

MBVLSI-168 (V.2)

Processor
80286
Processor Speed
8/12MHz
Chip Set
Unidentified
Video Chip Set
None
Maximum Onboard Memory
4MB
Maximum Video Memory
None
Cache
None
BIOS
Unidentified
Dimensions
330mm x 218mm
I/O Options
None
NPU Options
80287

CONNECTIONS
Purpose
Location
Purpose
Location
Reset switch
JP1
Turbo switch
JP4
Power LED & keylock
JP2
Turbo LED
JP5
Speaker
JP3
External battery
JP17

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
Factory configured - do not alter (100ns memory)
JP6
Pins 1 & 2 closed

Wait state select 0 wait states
JP10
Closed

Wait state select 1 wait state
JP10
Open

BIOS type select 27256
JP11
Closed

BIOS type select 27128
JP11
Open

Monitor type select color
JP12
Closed

Monitor type select monochrome
JP12
Open
»
Power good signal detect from board
JP16
Pins 1 & 2 closed

Power good signal detect from power supply
JP16
Pins 2 & 3 closed

DRAM CONFIGURATION 1
Size
Bank 0A
Parity 0
Bank 0B
Parity 1
512KB
(4) 44256
(2) 41256
None
None
1MB
(4) 44256
(2) 41256
(4) 44256
(2) 41256

DRAM JUMPER CONFIGURATION 1
Size
JP7
JP8
JP9
512KB
Closed
Closed
Closed
1MB
Closed
Open
Closed

DRAM CONFIGURATION 2
Size
Bank 0
Parity 0
Bank 1
Parity 1
512KB
(16) 41256
(2) 41256
None
None
640KB
(16) 41256
(2) 41256
(16) 4164
(2) 4164
1MB
(16) 41256
(2) 41256
(16) 41256
(2) 41256
2MB
(16) 411000
(2) 411000
None
None
4MB
(16) 411000
(2) 411000
(16) 411000
(2) 411000

DRAM JUMPER CONFIGURATION 2
Size
JP7
JP8
JP9
512KB
Closed
Closed
Closed
640KB
Closed
Closed
Open
1MB
Closed
Open
Closed
2MB
Closed
Open
Open
4MB
Open
Closed
Closed

DRAM CONFIGURATION 3
Size
Bank 2
Bank 3
512KB
(2) 256K x 9
None
1MB
(2) 256K x 9
(2) 256K x 9
2MB
(2) 1M x 9
None
4MB
(2) 1M x 9
(2) 1M x 9

DRAM JUMPER CONFIGURATION 3
Size
JP7
JP8
JP9
512KB
Closed
Closed
Closed
1MB
Closed
Open
Closed
2MB
Closed
Open
Open
4MB
Open
Closed
Closed

KEYBOARD BIOS PIN SELECTION
Setting
JP13
JP14
JP15
JP18
Pin 23
Open
Closed
Open
Open
Pin 27
Open
Open
Closed
Open
Pin 30
Closed
Open
Open
Open
Pin 32
Open
Open
Open
Closed

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MBVLSI-168 (V.2) Motherboard Settings and Configuration

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Processor	80286
Processor Speed	8/12MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	4MB
Maximum Video Memory	None
Cache	None
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80287

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	JP1	Turbo switch	JP4
Power LED & keylock	JP2	Turbo LED	JP5
Speaker	JP3	External battery	JP17

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Factory configured - do not alter (100ns memory)	JP6	Pins 1 & 2 closed
	Wait state select 0 wait states	JP10	Closed
	Wait state select 1 wait state	JP10	Open
	BIOS type select 27256	JP11	Closed
	BIOS type select 27128	JP11	Open
	Monitor type select color	JP12	Closed
	Monitor type select monochrome	JP12	Open
»	Power good signal detect from board	JP16	Pins 1 & 2 closed
	Power good signal detect from power supply	JP16	Pins 2 & 3 closed

DRAM CONFIGURATION 1
Size	Bank 0A	Parity 0	Bank 0B	Parity 1
512KB	(4) 44256	(2) 41256	None	None
1MB	(4) 44256	(2) 41256	(4) 44256	(2) 41256

DRAM JUMPER CONFIGURATION 1
Size	JP7	JP8	JP9
512KB	Closed	Closed	Closed
1MB	Closed	Open	Closed

DRAM CONFIGURATION 2
Size	Bank 0	Parity 0	Bank 1	Parity 1
512KB	(16) 41256	(2) 41256	None	None
640KB	(16) 41256	(2) 41256	(16) 4164	(2) 4164
1MB	(16) 41256	(2) 41256	(16) 41256	(2) 41256
2MB	(16) 411000	(2) 411000	None	None
4MB	(16) 411000	(2) 411000	(16) 411000	(2) 411000

DRAM JUMPER CONFIGURATION 2
Size	JP7	JP8	JP9
512KB	Closed	Closed	Closed
640KB	Closed	Closed	Open
1MB	Closed	Open	Closed
2MB	Closed	Open	Open
4MB	Open	Closed	Closed

DRAM CONFIGURATION 3
Size	Bank 2	Bank 3
512KB	(2) 256K x 9	None
1MB	(2) 256K x 9	(2) 256K x 9
2MB	(2) 1M x 9	None
4MB	(2) 1M x 9	(2) 1M x 9

DRAM JUMPER CONFIGURATION 3
Size	JP7	JP8	JP9
512KB	Closed	Closed	Closed
1MB	Closed	Open	Closed
2MB	Closed	Open	Open
4MB	Open	Closed	Closed

KEYBOARD BIOS PIN SELECTION
Setting	JP13	JP14	JP15	JP18
Pin 23	Open	Closed	Open	Open
Pin 27	Open	Open	Closed	Open
Pin 30	Closed	Open	Open	Open
Pin 32	Open	Open	Open	Closed