8MHz SYSTEM BOARD Motherboard Settings and Configuration

UNIDENTIFIED

8MHz SYSTEM BOARD

Processor
8088
Processor Speed
4.77/8MHz
Chip Set
Unknown
Max. Onboard DRAM
640KB
Cache
None
BIOS
ATI
Dimensions
330mm x 218mm
I/O Options
None
NPU Options
8087

CONNECTIONS
Purpose
Location
Purpose
Location
Speaker
CN1
Reset switch
JP1

USER CONFIGURABLE SETTINGS
Function
Switch
Position
»
Factory configured - do not alter
SW1/1
Off
»
NPU enabled
SW1/2
On

NPU disabled
SW1/2
Off

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
JP3
SW1/3
SW1/4
256KB
(9) 4164
(9) 4164
(9) 4164
(9) 4164
pins 1 & 2
On
Off
640KB
(9) 41256
(9) 41256
(9) 41256
(9) 41256
pins 2 & 3
Off
On
Note:Pins designated should be in the closed position.
The exact locations of Banks 0 through 4 is unknown.

MONITOR TYPE CONFIGURATION
Type
SW1/5
SW1/6
No display adapter
On
On
Color (40 x 20 mode)
Off
On
Color (80 x 25 mode)
On
Off
Monochrome or both
Off
Off

FLOPPY DRIVES INSTALLED
Drive(s) Installed
SW1/switch 7
SW1/switch 8
1
On
On
2
Off
On
3
On
Off
4
Off
Off

CPU SPEED CONFIGURATION
Speed
JP2
4.77MHz
pins 2 & 3 closed
8MHz
Open
Note:The system runs at 8MHz when the power is switched on but can be changed to 4mhz by pressing <CTRL> <ALT> <-> and closing pins 1 & 2. To return back to high speed, press the three keys once again.

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8MHz SYSTEM BOARD Motherboard Settings and Configuration

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Processor	8088
Processor Speed	4.77/8MHz
Chip Set	Unknown
Max. Onboard DRAM	640KB
Cache	None
BIOS	ATI
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	8087

CONNECTIONS
Purpose	Location	Purpose	Location
Speaker	CN1	Reset switch	JP1

USER CONFIGURABLE SETTINGS
Function		Switch	Position
»	Factory configured - do not alter	SW1/1	Off
»	NPU enabled	SW1/2	On
	NPU disabled	SW1/2	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3	JP3	SW1/3	SW1/4
256KB	(9) 4164	(9) 4164	(9) 4164	(9) 4164	pins 1 & 2	On	Off
640KB	(9) 41256	(9) 41256	(9) 41256	(9) 41256	pins 2 & 3	Off	On
Note:Pins designated should be in the closed position. The exact locations of Banks 0 through 4 is unknown.

MONITOR TYPE CONFIGURATION
Type	SW1/5	SW1/6
No display adapter	On	On
Color (40 x 20 mode)	Off	On
Color (80 x 25 mode)	On	Off
Monochrome or both	Off	Off

FLOPPY DRIVES INSTALLED
Drive(s) Installed	SW1/switch 7	SW1/switch 8
1	On	On
2	Off	On
3	On	Off
4	Off	Off

CPU SPEED CONFIGURATION
Speed	JP2
4.77MHz	pins 2 & 3 closed
8MHz	Open
Note:The system runs at 8MHz when the power is switched on but can be changed to 4mhz by pressing <CTRL> <ALT> <-> and closing pins 1 & 2. To return back to high speed, press the three keys once again.