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SUPER TURBO-XT

UNIDENTIFIED

SUPER TURBO-XT

Processor

8088 (exact location is unknown)

Processor Speed

4.77/12MHz

Chip Set

Unidentified

Max. Onboard DRAM

1MB

Cache

None

BIOS

Unidentified

Dimensions

220mm x 220mm

I/O Options

None

NPU Options

8087(exact location is unknown)

CONNECTIONS

Purpose

Location

Purpose

Location

Power LED

CN3

Keylock

CN6

Reset switch

CN4

Turbo LED

CN7

Speaker

CN5

Turbo switch

CN8

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

CPU type select NEC V20

J5

Closed

 

CPU type select 8088

J5

Open

RAM wait state select 0 wait state

J6

Closed

 

RAM wait state select 1 wait state

J6

Open

ROM wait state select 0 wait state

J7

Closed

 

ROM wait state select 1 wait state

J7

Open

Factory configured - do not alter

J8

Closed

Parity check disabled

SW1/1

On

 

Parity check disabled

SW1/1

Off

NPU disabled

SW1/2

On

 

NPU enabled

SW1/2

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

Bank 4

256KB

(2) 414256

NONE

NONE

NONE

NONE

512KB

(2) 414256

(2) 414256

NONE

NONE

NONE

640KB

(2) 414256

(2) 414256

(4) 41464

NONE

NONE

1MB

(2) 414256

(2) 414256

NONE

(2) 414256

(2) 414256

DRAM CONFIGURATION (PARITY)

Size

Parity 0

Parity 1

Parity 2

Parity 3

Parity 4

256KB

(1) 41256

NONE

NONE

NONE

NONE

512KB

(1) 41256

(1) 841256

NONE

NONE

NONE

640KB

(1) 41256

(1) 41256

(2) 4164

NONE

NONE

1MB

(1) 41256

(1) 41256

NONE

(1) 41256

(1) 41256

Note:If SW1 is disabled, parity chips are not needed.

DRAM SWITCH CONFIGURATION

Size

SW1/3

SW1/4

0KB

On

On

256KB

Off

On

512KB

Off

On

640KB

On

Off

1MB

Off

Off

MONITOR CONFIGURATION

Type

SW1/5

SW1/6

None installed

On

On

Monochrome

Off

Off

VGA (40 x 25)

Off

On

VGA (80 x 25)

On

Off

Note: Without ERSO BIOS 3301 installed.

MONITOR CONFIGURATION

Type

SW1/5

SW1/6

Monochrome

On

On

VGA (40 x 25)

Off

On

VGA (80 x 25)

On

Off

Note: With ERSO BIOS 3301 installed.

DISK DRIVE CONFIGURATION

Drives installed

SW1/7

SW1/8

1

On

On

2

Off

On

3

On

Off

4

Off

Off