386C MK III Motherboard Settings and Configuration

Processor	80386DX
Processor Speed	33/40MHz
Chip Set	None
Max. Onboard DRAM	16MB
Cache	64/128/256KB
BIOS	Phoenix
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	80387/3167

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	X4	Turbo switch	X11
Status display	X6	Reset switch	X15
Speaker	X7	Turbo LED	X16
Power LED & keylock	X8

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Battery installed < 5VDC	S1	pins 1 & 2 closed
	Battery installed > 5VDC	S1	pins 2 & 3 closed
»	CPU speed select switchable at keyboard	S2	pins 1 & 2 closed
	CPU speed select switchable at turbo switch	S2	pins 2 & 3 closed
»	Monitor type select monochrome	S3	Open
	Monitor type select color	S3	Closed
»	NPU disabled	SW1/1	Off
	NPU enabled	SW1/1	On

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
16MB	(4) 4M x 9	NONE

DRAM SWITCH CONFIGURATION
Size	SW1/2	SW1/3	SW1/4
1MB	On	On	On
2MB	On	On	Off
4MB	On	Off	On
8MB	On	Off	Off
16MB	Off	On	On

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG (D52)	TAG (D56)
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8	(1) 8K x 8
128KB	(4) 32K x 8	NONE	(1) 32K x 8	NONE
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8	(1) 32K x 8
Note: Bank 0 = D17, D27, D35, & D39. Bank 1 = D9, D26, D28, & D44.