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DES-RIS/TB

UNIDENTIFIED

DES-RIS/TB

Processor

8088 (exact location unknown)

Processor Speed

10MHz

Chip Set

Unidentified

Max. Onboard DRAM

640KB

Cache

None

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

None

NPU Options

8087 (exact location unknown)

CONNECTIONS

Purpose

Location

Purpose

Location

Speaker

JP1

Power LED

JP5 pins 1 & 2

Keylock

JP3

Turbo LED

JP5 pins 3 & 4

Reset switch

JP4

Turbo switch

JP6

USER CONFIGURABLE SETTINGS

Function

Switch

Position

CMOS memory normal operation

SW1/1

Off

 

CMOS memory clear

SW1/1

On

NPU disabled

SW1/2

On

 

NPU enabled

SW1/2

Off

Factory configured - do not alter

SW1/3

Off

Factory configured - do not alter

SW1/4

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 2A

Bank 3

Bank 3A

256KB

(9) 41256

NONE

NONE

NONE

NONE

NONE

512KB

(9) 41256

(9) 41256

NONE

NONE

NONE

NONE

576KB

(9) 41256

(9) 41256

(2) 4464

(1) 4164

NONE

NONE

640KB

(9) 41256

(9) 41256

(2) 4464

(1) 4164

(2) 4464

(1) 4164

VIDEO CONFIGURATION

Size

SW1/5

SW1/6

Monochrome

Off

Off

EGA

On

On

CGA (40 x 20)

Off

On

CGA (80 x 25)

On

Off

FLOPPY DRIVE CONFIGURATION

Drives installed

SW1/7

SW1/8

1

On

On

2

Off

On

3

On

Off

4

Off

Off