GEMINI (REV. 2.0) Motherboard Settings and Configuration

Processor	Pentium
Processor Speed	120/133/150MHz
Chip Set	Pico
Video Chip Set	None
Maximum Onboard Memory	256MB
Maximum Video Memory	None
Cache	256KB
BIOS	IBM/SystemSoft/Phoenix
Dimensions	330mm x 218mm
I/O Options	32-bit PCI slots (3)
NPU Options	None

CONNECTIONS
Purpose	Location
32-bit PCI slots	PC1 – PC3

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Test/monitor header	JP1	Unidentified
	Test/monitor header	JP2	Unidentified
	Test/monitor header	JP3	Unidentified
	Test/monitor header	JP4	Unidentified
	Test/monitor header	JP5	Unidentified
	Test/monitor header	JP6	Unidentified
»	PCI voltage select 5v	JP7	Pins 1 & 2 closed
	PCI voltage select 3v	JP7	Pins 2 & 3 closed
	Test/monitor header	JP9	Unidentified
	Test/monitor header	JP13	Unidentified
»	Factory configured - do not alter	JP17	Unidentified
»	Factory configured - do not alter	JP18	Unidentified
»	Speaker enabled	JP21	Closed
	Speaker disabled	JP21	Open
»	CMOS memory normal operation	JP22	Open
	CMOS memory clear	JP22	Closed
»	VPP power disabled	JP23	Open
	VPP power enabled	JP23	Closed
»	ROM write disabled	JP24	Open
	ROM write enabled	JP24	Closed
»	Data rate select pin 6	JP27	Open
	Data rate select pin 6 & 27	JP27	Closed
	Test/monitor header	JP28	Unidentified
»	H8 clock select PLL clock generator	JP29	Pins 1 & 2 closed
	H8 clock select crystal oscillator	JP29	Pins 2 & 3 closed
	Test/monitor header	JP501	Unidentified
	Test/monitor header	JP502	Unidentified
Note: The location of the test/monitor headers is unidentified.

SIMM CONFIGURATION
Size	Bank 0	Bank 1
8MB	(2) 1M x 36	None
16MB	(2) 2M x 36	None
16MB	(2) 1M x 36	(2) 1M x 36
24MB	(2) 2M x 36	(2) 1M x 36
32MB	(2) 4M x 36	None
32MB	(2) 2M x 36	(2) 2M x 36
40MB	(2) 4M x 36	(2) 1M x 36
48MB	(2) 4M x 36	(2) 2M x 36
64MB	(2) 8M x 36	None
64MB	(2) 4M x 36	(2) 4M x 36
72MB	(2) 8M x 36	(2) 1M x 36

SIMM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1
80MB	(2) 8M x 36	(2) 2M x 36
96MB	(2) 8M x 36	(2) 4M x 36
128MB	(2) 8M x 36	(2) 8M x 36
128MB	(2) 16M x 36	None
136MB	(2) 16M x 36	(2) 1M x 36
144MB	(2) 16M x 36	(2) 2M x 36
160MB	(2) 16M x 36	(2) 4M x 36
192MB	(2) 16M x 36	(2) 8M x 36
256MB	(2) 16M x 36	(2) 16M x 36

SIMM MODULE POWER SELECTION
Setting		JP19
»	Enabled	Pins 1 & 2, 3 & 4, 5 & 6 closed
	Disabled	Open

SIMM POWER SUPPLY SELECTION
Setting		JP20
»	Enabled	Pins 1 & 2, 3 & 4, 5 & 6 closed
	Disabled	Open

CACHE CONFIGURATION

Note: The location of the cache is unidentified.

CPU SPEED SELECTION
Speed	JP10	JP11	JP12
32MHz	Open	Closed	Closed
40MHz	Open	Open	Closed
50MHz	Closed	Closed	Open
60MHz	Closed	Open	Closed
66MHz	Open	Closed	Open
75MHz	Closed	Closed	Closed
80MHz	Closed	Open	Open

CPU TYPE SELECTION
Type	JP8
P54C	Pins 1 & 2 closed
P55C	Pins 2 & 3 closed

SERIAL PORT 2 SELECTION
Setting		JP36/pins 1 & 2	JP36/pins 3 & 4	JP36/pins 5 & 6
	Used as H8	Closed	Closed	Open
»	Used as IR connector	Open	Open	Closed

PCI REQ/INT SELECTION
Setting		JP34	JP35
»	Normal operation	Open	Open
	Test mode	Closed	Closed

CLOCK SKEW SELECTION
Skew	JP14	JP15	JP16
0	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
.55	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
1.10	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
1.65	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
-2.20	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
-1.65	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 2 & 3 closed
-1.10	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
-.55	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed