M-321 (VER. 2) Motherboard Settings and Configuration

Processor	80386DX
Processor Speed	25/33/40MHz
Chip Set	PC Chips
Video Chip Set	None
Maximum Onboard Memory	32MB
Maximum Video Memory	None
Cache	32/64/128/256KB
BIOS	AMI
Dimensions	250mm x 196mm
I/O Options	None
NPU Options	80387DX/3167

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J1	Turbo switch	J12
Reset switch	J10	Power LED & keylock	J13
Turbo LED	J11	Speaker	J14

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Monitor type select monochrome	J2	Open
	Monitor type select color	J2	Closed

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
5MB	(4) 256K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	None
20MB	(4) 4M x 9	(4) 1M x 9
32MB	(4) 4M x 9	(4) 4M x 9

CACHE CONFIGURATION
Size	Bank 0	Bank 1	U17	U32
32KB	(4) 8K x 8	None	(1) 8K x 8	(1) 16K x 4
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8	(1) 16K x 4
128KB	(4) 32K x 8	None	(1) 8K x 8	(1) 16K x 4
256KB	(4) 32K x 8	(4) 32K x 8	(1) 8K x 8	(1) 16K x 4
Note: If a chip is installed at U32, cache functions as write back cache. If empty, cache functions as write through.

CACHE JUMPER CONFIGURATION
Size	J3	J5	J6	J7	J8	J9
32KB	Open	1 & 2	1 & 2	1 & 2	2 & 3	2 & 3
64KB	Open	1 & 2	1 & 2	2 & 3	2 & 3	1 & 2
128KB	Closed	1 & 2	2 & 3	2 & 3	2 & 3	1 & 2
256KB	Closed	2 & 3	2 & 3	2 & 3	1 & 2	1 & 2
Note: Pins designated should be in the closed position.