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BABY GEMINI-486

MICRONICS COMPUTERS, INC.

BABY GEMINI-486

Processor

80486DX

Processor Speed

50MHz

Chip Set

Micronics

Max. Onboard DRAM

32MB

Cache

64/128/256KB

BIOS

Phoenix

Dimensions

331mm x 218mm

I/O Options

32-bit external memory card slot

NPU Options

4167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J11

Turbo LED

W5

Speaker

J23

Reset switch

W6

Power LED & keylock

J24

Turbo switch

W7

32-bit external memory card

S1

   

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Factory configured - do not alter

SW1/1

On

Factory configured - do not alter

SW1/2

Off

Factory configured - do not alter

SW1/3

Off

Factory configured - do not alter

SW1/4

On

Factory configured - do not alter

SW1/5

Off

Factory configured - do not alter

SW1/6

Off

Factory configured - do not alter

SW1/7

Off

Factory configured - do not alter

SW1/8

Off

Factory configured - do not alter

SW2/6

On

Factory configured - do not alter

W11

pins 2 & 3 closed

Factory configured - do not alter

W12

Closed

Factory configured - do not alter

W13

pins 2 & 3 closed

Factory configured - do not alter

W14

pins 2 & 3 closed

Cache interleave select 64KB

W15

pins 2 & 3 closed

 

Cache interleave select 256KB

W15

pins 1 & 2 closed

Note:Cache can not be interleaved at 128KB. When using 128KB cache, W15 setting is irrelevant.

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

5MB

(4) 256K x 9

(4) 1M x 9

NONE

NONE

6MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

NONE

7MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

9MB

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

NONE

10MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

NONE

13MB

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

NONE

NONE

20MB

(4) 1M x 9

(4) 4M x 9

NONE

NONE

24MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

NONE

28MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

32MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

36MB

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

NONE

40MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

48MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

NONE

52MB

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

64MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

DRAM SWITCH CONFIGURATION

Size

SW2/1

SW2/2

SW2/3

SW2/4

SW2/5

1MB

On

On

On

On

On

2MB

Off

On

On

On

On

3MB

On

Off

On

On

On

4MB

Off

Off

On

On

On

4MB

On

On

Off

On

On

5MB

On

On

Off

Off

On

6MB

On

Off

On

Off

On

7MB

Off

On

On

Off

On

8MB

Off

On

Off

On

On

9MB

On

Off

Off

Off

On

10MB

Off

Off

On

Off

On

12MB

On

Off

Off

On

On

13MB

Off

Off

Off

Off

On

16MB

Off

Off

Off

On

On

16MB

On

On

Off

On

Off

20MB

On

On

Off

Off

Off

24MB

On

Off

On

Off

Off

28MB

Off

On

On

Off

Off

32MB

Off

On

Off

On

Off

36MB

On

Off

Off

Off

Off

40MB

Off

Off

On

Off

Off

48MB

On

Off

Off

On

Off

52MB

Off

Off

Off

Off

Off

64MB

Off

Off

Off

On

Off

CACHE CONFIGURATION

Size

Bank 0

Bank 1

64KB

(4) 8K x 8

(4) 8K x 8

128KB

(4) 32K x 8

NONE

256KB

(4) 32K x 8

(4) 32K x 8

CACHE JUMPER/SWITCH CONFIGURATION

Size

SW2/7

SW2/8

W3

W4

64KB

Off

Off

Open

Open

128KB

On

On

Open

Closed

256KB

Off

On

Closed

Closed