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GEMINI (REV. 2.0)

MICROMODULE SYSTEMS, INC.

GEMINI (REV. 2.0)

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