STEP 386/20 REV.E (EV-1816A) Motherboard Settings and Configuration

Processor

80386DX

Processor Speed

20MHz

Chip Set

C & T

Max. Onboard DRAM

8MB

Cache

64/128/256KB

BIOS

AMI

Dimensions

330mm x 218mm

I/O Options

32-bit external memory card

NPU Options

80387DX

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

»

Monitor select color

C/M

Closed

Monitor select monochrome

C/M

Open

»

NPU enabled

W3

Closed

NPU disabled

W3

Open

»

External memory card disabled

W14

Closed

External memory card enabled

W14

Open

»

Base memory select 512KB

W16

Closed

Base memory select 640KB

W16

Open

»

Bus speed select 6.7MHz

W17

Closed

Bus speed select 10MHz

W17

Open

»

External memory card parity checking disabled

W20

Closed

External memory card parity checking disabled

W20

Open

DRAM CONFIGURATION

Mainboard mem.

Total memory

Bank 0

Bank 1

Bank 2

Bank 3

1MB

1MB

(4) 256K x 9

NONE

NONE

NONE

2MB

2MB

(4) 256K x 9

(4) 256K x 9

NONE

NONE

2MB

4MB

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

(4) 256K x 9

4MB

4MB

(4) 1M x 9

NONE

NONE

NONE

8MB

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

8MB

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 external memory card.

DRAM JUMPER CONFIGURATION

Size

W1

W15

W21

PAL

1MB

Closed

Closed

Closed

ICX-1816A-107C

2MB

Closed

Closed

Open

ICX-1816-107A

4MB (256K x 9)

Closed

Closed

Closed

ICX-1816A-107C

4MB (1M x 9)

Open

Open

Open

ICX-1816-107A

8MB

Open

Open

Open

ICX-1816-107A

16MB

Open

Open

Open

ICX-1816-107A

CACHE CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

64KB

(8) 16K x 4

NONE

NONE

NONE

128KB

(8) 16K x 4

(8) 16K x 4

NONE

NONE

256KB

(8) 16K x 4

(8) 16K x 4

(8) 16K x 4

(8) 16K x 4

Note: Banks 2 & 3 are located on the external memory card.