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PREMIUM/286

AST RESEARCH, INC.

PREMIUM/286

(MODELS 202143-001 & 202143-002)

Processor

80286DX

Processor Speed

10MHz

Chip Set

AST

Max. Onboard DRAM

None (2/4 or 8/16MB on external memory card(s))

Cache

None

BIOS

AST

Dimensions

330mm x 218mm

I/O Options

32-bit external memory/CPU card slot (2), parallel port, serial port

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

32-bit external memory/CPU card

CN1

Front panel switches & LEDs

J25

32-bit external memory/CPU card

CN2

Optional ROM (odd)

U11

External battery

J22

Optional ROM (even)

U13

Speaker

J24

   

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 1

COM1

Keyboard

KYBD

Parallel port

LPT1

   

SERIAL PORT CONFIGURATION

Serial Port (COM1)

Jumper E24-E25

Jumper E31

Jumper E32

COM1: using IRQ4

pins 1 & 2 closed

closed

open

COM2: using IRQ3

pins 2 & 3 closed

open

closed

PARALLEL PORT CONFIGURATION

Parallel Port (LPT)

Jumper E27

Jumper E28

Jumper E29

Jumper E30

LPT1: using IRQ7

closed

open

closed

open

LPT2: using IRQ7

open

closed

open

closed

BIOS TYPE CONFIGURATION

BIOS Type

Jumper E4

Jumper E5

Jumper E6

27128

open

open

closed

27256

closed

closed

open

OPTIONAL ROM TYPE CONFIGURATION

ROM Type

Address

Jumper E10

Jumper E11

Jumper E12

Jumper E13

27128

F000-F7FFh

open

open

closed

open

27128

E800-EFFFh

open

open

open

closed

27256

E000-EFFFh

closed

closed

open

open

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

E2

open

BIOS wait state select one

E3

open

 

BIOS wait states select zero

E3

closed

Latched PROM BIOS disabled

E7

open

 

Latched PROM BIOS enabled

E7

closed

Latched PROM BIOS (for optional ROMs) disabled

E8, E14 & E15

open

 

Latched PROM BIOS (for optional ROMs) enabled

E8, E14 & E15

closed

Optional ROM wait state select one

E9

open

 

Optional ROM wait states select zero

E9

closed

I/O bus wait states select two (at 10MHz operation)

E20

closed

 

I/O bus wait state select one (at 10MHz operation)

E20

open

Factory configured - do not alter

E21

open

USER CONFIGURABLE SETTINGS FOR FASTRAM MEMORY BOARD

Function

Jumper/Switch

Position

Parity check enabled

E1

closed

 

Parity check disabled

E1

open

Wait states select zero

E2

closed

 

Wait state select one

E2

open

Page mode disabled

SW1/switch 5

closed

 

Page mode enabled

SW1/switch 5

open

Board installed select first FASTram board installed

SW1/switch 6

closed

 

Board installed select second FASTram board installed

SW1/switch 6

open

DRAM CONFIGURATION FOR FASTRAM MEMORY BOARD

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

(18) 41256

NONE

NONE

NONE

1MB

(18) 41256

(18) 41256

NONE

NONE

1.5MB

(18) 41256

(18) 41256

(18) 41256

NONE

2MB

(18) 41256

(18) 41256

(18) 41256

(18) 41256

DRAM SWITCH CONFIGURATION FOR FASTRAM MEMORY BOARD

Recognized by System

SW1/switch 1

SW1/switch 2

SW1/switch 3

SW1/switch 4

128KB

closed

closed

closed

closed

256KB

open

closed

closed

closed

384KB

closed

open

closed

closed

512KB

open

open

closed

closed

640KB

closed

closed

open

closed

768KB

open

closed

open

closed

896KB

closed

open

open

closed

1024KB

open

open

open

closed

1152KB

closed

closed

closed

open

1280KB

open

closed

closed

open

1408KB

closed

open

closed

open

1536KB

open

open

closed

open

1664KB

closed

closed

open

open

1792KB

open

closed

open

open

1920KB

closed

open

open

open

2048KB

open

open

open

open

BASE I/O ADDRESS CONFIGURATION FOR FASTRAM MEMORY BOARD

Base I/O Address

SW1/switch 7

SW1/switch 8

SW1/switch 9

SW1/switch 10

0208h

closed

closed

closed

closed

0218h 1

open

closed

closed

closed

0258h 2

open

closed

open

closed

0268h

closed

open

open

closed

02A8h

closed

open

closed

open

02B8h

open

open

closed

open

02E8h

closed

open

open

open

Note 1 :This setting is recommended when this is the first FASTram Memory Board installed.

Note 2 :This setting is recommended when this is the second FASTram Memory Board installed.

USER CONFIGURABLE SETTINGS FOR ADVANCED FASTRAM MEMORY BOARD

Function

Jumper

Position

Factory configured - do not alter

E0-E1

pins 2 & 3 closed

Board installed select first FASTram board installed

E2

E4

open

closed

 

Board installed select second FASTram board installed

E2

E4

closed

open

Memory installed select as expanded

E3

closed

 

Memory installed select as paged

E3

open

Note:Parity, wait states, size, and base I/O address are set using the software configuration utility.

DRAM CONFIGURATION FOR ADVANCED FASTRAM MEMORY BOARD

Size

Bank 0

Bank 1

Bank 2

Bank 3

512KB

(2) 256K x 9

NONE

NONE

NONE

1MB

(2) 256K x 9

(2) 256K x 9

NONE

NONE

1.5MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

NONE

2MB

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

(2) 256K x 9

2MB

(2) 1M x 9

NONE

NONE

NONE

3MB

(2) 256K x 9

(2) 256K x 9

(2) 1M x 9

NONE

4MB

(2) 1M x 9

(2) 1M x 9

NONE

NONE

5MB

(2) 256K x 9

(2) 256K x 9

(2) 1M x 9

(2) 1M x 9

6MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

NONE

8MB

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9

(2) 1M x 9