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386-I CACHE

MICRONICS COMPUTERS, INC.

386-I CACHE

Processor

80386DX

Processor Speed

20/25/33MHz

Chip Set

Micronics

Max. Onboard DRAM

None

Cache

32/64KB

BIOS

Phoenix

Dimensions

355mm x 305mm

I/O Options

32-bit external memory card slot

NPU Options

80387/3167

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J2

Auxiliary keyboard

J25

32-bit external memory card

J20

Reset switch

W1

Power LED & keylock

J21

Turbo LED

W9

Speaker

J22

Turbo switch

W15

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Factory configured - do not alter

SW1/1

On

NPU select 3167 or none

SW1/2

Off

 

NPU select 80387

SW1/2

On

Factory configured - do not alter

SW1/3

Off

Video BIOS shadowing enabled

SW1/4

On

 

Video BIOS shadowing disabled

SW1/4

Off

Factory configured - do not alter

SW1/5

Off

Monitor type select color

SW1/6

On

 

Monitor type select monochrome

SW1/6

Off

Cache enabled

SW1/7

On

 

Cache disabled

SW1/7

Off

Factory configured - do not alter

SW1/8

Off

Non-cacheable region select E00000 to EFFFFF

W22

pins 1 & 2 closed

 

Non-cacheable region select D00000 to DFFFFF

W22

Open

Factory configured - do not alter

W23

Open

Factory configured - do not alter

W30

pins 2 & 3 closed

Note:The location of W23 & W30 are unidentified.

CACHE CONFIGURATION

Size

Organization

Bank 0

Bank 1

32KB

directly mapped

(4) 8K x 8

NONE

64KB

2 way set-associative

(4) 8K x 8

(4) 8K x 8

CACHE JUMPER CONFIGURATION

Size

W12

W13

32KB

pins 1 & 2 closed

pins 1 & 2 closed

64KB

Open

pins 2 & 3 closed

NPU CONFIGURATION

Setting

W7

W8

NPU synchronous with oscillator at U109

pins 1 & 2 closed

Closed

NPU synchronous with CPU

Open

Open

DRAM CONFIGURATION

Size

Bank 0

Bank 1

1MB

(36) 41256

NONE

2MB

(36) 41256

(36) 41256

4MB

(36) 411000

NONE

5MB

(36) 41256

(36) 411000

8MB

(36) 411000

(36) 411000

DRAM JUMPER CONFIGURATION

Size

SW1/1

SW1/2

SW1/3

SW1/4

SW1/5

SW1/6

SW1/7

SW1/8

1MB

On

Off

On

On

On

Off

Off

Off

2MB

Off

On

On

On

On

Off

Off

Off

4MB

On

On

Off

Off

On

Off

Off

Off

5MB

Off

Off

Off

On

On

Off

Off

Off

8MB

Off

On

Off

Off

On

Off

Off

Off