STEP 386 REV. G Motherboard Settings and Configuration

Processor	80386DX
Processor Speed	16/20MHz
Chip Set	C & T
Max. onboard DRAM	8MB
Cache	64/128KB
BIOS	AMI
Dimensions	355mm x 304mm
I/O Options	32-bit external memory card
NPU Options	80387DX

CONNECTIONS
Purpose	Location
32-bit external memory card	S1

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Factory configured - do not alter	SW1	Unknown

SYSTEM DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3	W1
1MB	(4) 256K x 9	NONE	NONE	NONE	Closed
2MB	(4) 256K x 9	(4) 256K x 9	NONE	NONE	Closed
4MB	(4) 1M x 9	NONE	NONE	NONE	Open
4MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	Closed
8MB	(4) 1M x 9	(4) 1M x 9	NONE	NONE	Open
16MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	Open
Note:Banks 2 & 3, and W1 are located on the external memory Board.

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG	Dirty Bit (U38)
64KB	(4) 16K x 4	NONE	(2) 16K x 4	(1) 16K x 4
128KB	(4) 16K x 4	(4) 16K x 4	(2) 16K x 4	(1) 16K x 4
Note:Each Cache bank must be fully populated when its corresponding DRAM bank is populated.

RESISTOR SIP CONFIGURATION
Memory Banks installed	RP28	RP29	RP30	RP31
Bank 0	Installed	Open	Installed	Open
Bank 0 & 1	Open	Installed	Installed	Open
Banks 0, 1, 2, & 3	Open	Installed	Open	Installed
Note:Banks 2 & 3 are on the external memory card

CACHE CONFIGURATION
Size	Cache	Location
64KB	(8) 16K x 4	Bank 2
128KB	(8) 16K x 4	Bank 2 & 3
Note:Each Cache bank must be fully populated when its corresponding DRAM bank is populated.