ATOMIZER 386/20 Motherboard Settings and Configuration

Processor	80386DX
Processor Speed	20MHz
Chip Set	NEC
Max. Onboard DRAM	8MB
Cache	Unidentified
BIOS	Award/Phoenix
Dimensions	330mm x 218mm
I/O Options	32-bit external memory card slot
NPU Options	80387

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	J20	Turbo LED	J23
Power LED & keylock	J21	32-bit external memory card	S1
Speaker	J22

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	BIOS type select 27256	J19	pins 1 & 2 closed
	BIOS type select 27128	J19	pins 2 & 3 closed
»	Conventional memory size select 512KB	SW1/1	On
	Conventional memory size select 640KB	SW1/1	Off
»	Onboard EGA BIOS enabled	SW1/5	On
	Onboard EGA BIOS disabled	SW1/5	Off
»	Factory configured - do not alter	SW1/6	Off
»	CPU speed at boot select 20MHz	SW1/7	On
	CPU speed at boot select 8MHz	SW1/7	Off
»	Monitor type select monochrome	SW1/8	Off
	Monitor type select color	SW1/8	On
Note:The location of J19 is unidentified.

DRAM CONFIGURATION
Size	Bank 0	Bank 1
1MB	(4) 256K x 9	NONE
2MB	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1M x 9	NONE
8MB	(4) 1M x 9	(4) 1M x 9

DRAM SWITCH CONFIGURATION
Size	SW1/2	SW1/3	SW1/4
1MB	Off	On	On
2MB	Off	Off	On
4MB	Off	On	Off
8MB	On	Off	Off

CACHE CONFIGURATION

Note:Although cache chips are diagrammed in the users manual, no information concerning cache sizes or configurations are listed in the users manual nor are they available from the manufacturer.