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S 500

SAMSUNG ELECTRONICS, INC.

S 500

Processor

80286

Processor Speed

16/20MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

1MB

Maximum Video Memory

None

Cache

None

BIOS

Unidentified

Dimensions

355mm x 304mm

I/O Options

Floppy drive interface, parallel port, serial ports (2)

NPU Options

80287

CONNECTIONS

Purpose

Location

Purpose

Location

Parallel port

CN1

External battery

JP2

Serial port 1

CN2

Keyboard connector

JP17

Serial port 2

CN3

Power LED & keylock

JP18

Floppy drive interface

CN4

Speaker

JP20

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Parallel port enabled

JP1

Closed

 

Parallel port disabled

JP1

Open

 

Serial port 1 enabled

JP3

Closed

 

Serial port 1 disabled

JP3

Open

 

Serial port 2 enabled

JP4

Closed

 

Serial port 2 disabled

JP4

Open

 

Floppy drive secondary address enabled

JP5

Closed

 

Floppy drive primary address enabled

JP5

Open

 

Floppy drive speed select dual speed

JP7

Closed

 

Floppy drive speed select single speed

JP7

Open

 

Precompensation value select 187ns

JP8

Closed

 

Precompensation value select 125ns

JP8

Open

 

DMA CLOCK = DMA CLOCK

JP13

Pins 1 & 2 closed

 

DMA CLOCK = SYS CLOCK

JP13

Pins 2 & 3 closed

 

BIOS type select 27256

JP14

Pins 1 & 2 closed

 

BIOS type select 27128

JP14

Pins 2 & 3 closed

 

ROM enable signal select XMER signal

JP15

Pins 1 & 2 closed

 

ROM enable signal select LCSROM signal

JP15

Pins 2 & 3 closed

Factory configured - do not alter

JP19

Unidentified

 

Monitor type select color

SW1

Up

 

Monitor type select monochrome

SW1

Down

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

256KB

(9) 41256

None

None

None

512KB

(9) 41256

(9) 41256

None

None

640KB

(9) 41256

(9) 41256

(9) 4164

None

1MB

(9) 41256

(9) 41256

(9) 41256

(9) 41256

Note: The location of banks 0, 1, 2 & 3 are unidentified.

DRAM JUMPER CONFIGURATION

Size

JP10

JP11

256KB

Pins 2 & 3 closed

Pins 2 & 3 closed

512KB

Pins 2 & 3 closed

Pins 1 & 2 closed

640KB

Pins 1 & 2 closed

Pins 2 & 3 closed

1MB

Pins 1 & 2 closed

Pins 1 & 2 closed

CPU SPEED SELECTION

Speed

JP16

16MHz

Open

20MHz

Pins 1 & 2 closed

16/20MHz (through keyboard)

Pins 2 & 3 closed

ON BOARD FLOPPY DRIVE SELECTION

Setting

JP6

JP9

Enabled

Closed

Closed

Disabled

Open

Open