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STEP 386/20

EVEREX SYSTEMS, INC.

STEP 386/20

Processor

80386

Processor Speed

20MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

16MB (8MB located on memory card)

Maximum Video Memory

None

Cache

Unidentified

BIOS

Unidentified

Dimensions

355mm x 304mm

I/O Options

External memory card

NPU Options

80387

CONNECTIONS

Purpose

Location

External memory card

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Color/mono switch

S1

Unidentified

NPU not installed

W3

Open

 

NPU installed

W3

Closed

 

Step Up not installed

W14

Closed

 

Step Up installed

W14

Open

 

Bus speed select 6.7MHz

W17

Closed

 

Bus speed select 10MHz

W17

Open

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

8MB

(4) 1M x 9

(4) 1M x 9

None

None

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

None

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

Note: Banks 2 & 3 are located on the memory card. The size of the parity chips is unidentified.

DRAM BANK CONFIGURATION

Banks used

RN27

RN28

RN29

RN30

RN31

RN32

1

Installed

Not installed

Not installed

Installed

Not installed

Not installed

2

Not installed

Installed

Not installed

Not installed

Installed

Not installed

4

Not installed

Not installed

Installed

Not installed

Not installed

Installed

DRAM BANK CONFIGURATION (CONíT)

Banks used

RN58

RN59

RN60

RN61

RN62

RN63

1

Installed

Not installed

Not installed

Installed

Not installed

Not installed

2

Not installed

Installed

Not installed

Not installed

Installed

Not installed

4

Not installed

Not installed

Installed

Not installed

Not installed

Installed

SIMM SIZE CONFIGURATION

Size

W15

256K x 9

Closed

1M x 9

Open

BASE MEMORY CONFIGURATION

Size

W16

512KB

Closed

640KB

Open

CACHE CONFIGURATION

Note: The size of the cache is unidentified.