STEP 386/20 Motherboard Settings and Configuration

Processor	80386
Processor Speed	20MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	16MB (8MB located on memory card)
Maximum Video Memory	None
Cache	Unidentified
BIOS	Unidentified
Dimensions	355mm x 304mm
I/O Options	External memory card
NPU Options	80387

CONNECTIONS
Purpose	Location
External memory card	SL1

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Color/mono switch	S1	Unidentified
	NPU not installed	W3	Open
	NPU installed	W3	Closed
	Step Up not installed	W14	Closed
	Step Up installed	W14	Open
	Bus speed select 6.7MHz	W17	Closed
	Bus speed select 10MHz	W17	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
1MB	(4) 256K x 9	None	None	None
2MB	(4) 256K x 9	(4) 256K x 9	None	None
3MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	None
4MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9
4MB	(4) 1M x 9	None	None	None
8MB	(4) 1M x 9	(4) 1M x 9	None	None
12MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	None
16MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9
Note: Banks 2 & 3 are located on the memory card. The size of the parity chips is unidentified.

DRAM BANK CONFIGURATION
Banks used	RN27	RN28	RN29	RN30	RN31	RN32
1	Installed	Not installed	Not installed	Installed	Not installed	Not installed
2	Not installed	Installed	Not installed	Not installed	Installed	Not installed
4	Not installed	Not installed	Installed	Not installed	Not installed	Installed

DRAM BANK CONFIGURATION (CON’T)
Banks used	RN58	RN59	RN60	RN61	RN62	RN63
1	Installed	Not installed	Not installed	Installed	Not installed	Not installed
2	Not installed	Installed	Not installed	Not installed	Installed	Not installed
4	Not installed	Not installed	Installed	Not installed	Not installed	Installed

SIMM SIZE CONFIGURATION
Size	W15
256K x 9	Closed
1M x 9	Open

BASE MEMORY CONFIGURATION
Size	W16
512KB	Closed
640KB	Open

CACHE CONFIGURATION

Note: The size of the cache is unidentified.