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CORPORATE SERIES 386/486 (VER. E & LATER)

HYUNDAI ELECTRONICS, INC.

CORPORATE SERIES 386/486 (VER. E & LATER)

Processor

80386DX/80486SX/80486DX

Processor Speed

20/25/33/40/50MHz

Chip Set

Northport/VLSI

Max. Onboard DRAM

64MB

Cache

64/256KB (on CPU card)

BIOS

AMI

Dimensions

355.6mm x 304.8mm

I/O Options

Serial ports (2), parallel port, floppy drive interface, IDE interface, proprietary CPU card slot

NPU Options

80387/3167/4167

CONNECTIONS

Purpose

Location

Purpose

Location

Proprietary CPU card

CPU1

Serial port 1

J9

External battery

J2

Serial port 2

J10

Turbo LED

J4

Parallel port

J15

Power LED & keylock

J5

Floppy drive interface

J16

Reset switch

J6

IDE interface

J17

IDE interface LED

J8

Speaker

J19

Note: Although the CPU card supports a 50MHz processor, only a 40MHz 386DX, a 20MHz 486SX, and a 33MHz 486DX version are sold by Hyundai.

USER CONFIGURABLE SETTINGS

Function

Jumper/Switch

Position

Factory configured - do not alter

SW1 pins 1 & 2

Open

Factory configured - do not alter

SW1 pins 3 & 4

Closed

Factory configured - do not alter

SW1 pins 5 & 6

Closed

Video BIOS shadowing enabled

SW1 pins 7 & 8

Closed

 

Video BIOS shadowing disabled

SW1 pins 7 & 8

Open

SCSI BIOS shadowing disabled

SW1 pins 9 & 10

Open

 

SCSI BIOS shadowing enabled

SW1 pins 9 & 10

Closed

ROM BIOS shadowing enabled

SW1 pins 11 & 12

Closed

 

ROM BIOS shadowing disabled

SW1 pins 11 & 12

Open

Serial port 2 interrupt select IRQ3

SW2 pins 1 & 2

Closed

 

Serial port 2 interrupt select none

SW2 pins 1 & 2

Open

Serial port 1 interrupt select IRQ4

SW2 pins 3 & 4

Closed

 

Serial port 1 interrupt select none

SW2 pins 3 & 4

Open

Floppy drive interface enabled

SW3 pins 1 & 2

Open

 

Floppy drive interface enabled

SW3 pins 1 & 2

Closed

Serial port 2 select COM2/2F8h

SW3 pins 3 & 4

Open

 

Serial port 2 disabled

SW3 pins 3 & 4

Closed

Serial port 1 select COM1/3F8h

SW3 pins 5 & 6

Open

 

Serial port 1 disabled

SW3 pins 5 & 6

Closed

BIOS cache location select 486DX internal cache

SW4/3

On

 

BIOS cache location select external cache

SW4/3

Off

BIOS (E000-EFFFh) shadowing enabled

SW4/4

On

 

BIOS (E000-EFFFh) shadowing disabled

SW4/4

Off

DRAM transparent refresh enabled

SW4/5

On

 

DRAM transparent refresh disabled

SW4/5

Off

Factory configured - do not alter

SW5/1

Off

Factory configured - do not alter

SW5/2

On

IDE interface interrupt select IRQ14

SW21

On

 

IDE interface interrupt select none

SW21

Off

Floppy drive precompensation select standard

W2

pins 2 & 3 closed

 

Floppy drive precompensation select alternate

W2

pins 1 & 2 closed

CPU speed select fast/switchable from keyboard

W3

pins 2 & 3 closed

 

CPU speed select fast

W3

Open

 

CPU speed select slow

W3

pins 1 & 2 closed

Monitor type select color

W4

pins 2 & 3 closed

 

Monitor type select monochrome

W4

pins 1 & 2 closed

CMOS memory normal operation

W7

Open

 

CMOS memory clear

W7

Closed

Parallel port mode select bi-directional

W13

pins 2 & 3 closed

 

Parallel port mode select input only

W13

pins 1 & 2 closed

Floppy drive type select single-speed

W18

pins 1 & 2 closed

 

Floppy drive type select dual-speed

W18

pins 2 & 3 closed

USER CONFIGURABLE SETTINGS (CON'T)

Function

Jumper/Switch

Position

BIOS type select 27256

W19

pins 2 & 3 closed

 

BIOS type select 27512

W19

pins 1 & 2 closed

IDE interface enabled

W20

Open

 

IDE interface disabled

W20

Closed

Note: The locations of SW4 & SW5 are unidentified.

DRAM CONFIGURATION

Size

Bank 0

Bank 1

Bank 2

Bank 3

1MB

(4) 256K x 9

NONE

NONE

NONE

2MB

(4) 256K x 9

(4) 256K x 9

NONE

NONE

4MB

(4) 1M x 9

NONE

NONE

NONE

6MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

NONE

8MB

(4) 1M x 9

(4) 1M x 9

NONE

NONE

10MB

(4) 256K x 9

(4) 256K x 9

(4) 1M x 9

(4) 1M x 9

12MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

NONE

16MB

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

NONE

NONE

NONE

24MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

NONE

32MB

(4) 4M x 9

(4) 4M x 9

NONE

NONE

36MB

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

NONE

40MB

(4) 1M x 9

(4) 1M x 9

(4) 4M x 9

(4) 4M x 9

48MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

NONE

64MB

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

(4) 4M x 9

DRAM JUMPER CONFIGURATION

Size

SW1

W5

W6

W28

W29

1MB

13 & 14, 15 & 16, 17 & 18, 19 & 20

2 & 3

2 & 3

Open

Open

2MB

13 & 14, 17 & 18, 19 & 20

2 & 3

2 & 3

Open

Open

4MB

13 & 14, 15 & 16, 17 & 18

1 & 2

2 & 3

Open

Open

6MB

15 & 16, 17 & 18, 19 & 20

2 & 3

2 & 3

1 & 2

2 & 3

8MB

13 & 14, 17 & 18

1 & 2

2 & 3

Open

Open

10MB

17 & 18, 19 & 20

2 & 3

2 & 3

1 & 2

2 & 3

12MB

15 & 16, 17 & 18

1 & 2

2 & 3

1 & 2

2 & 3

16MB

17 & 18

1 & 2

2 & 3

1 & 2

2 & 3

16MB

13 & 14, 15 & 16

1 & 2

2 & 3

Open

Open

24MB

15 & 16, 19 & 20

1 & 2

2 & 3

1 & 2

1 & 2

32MB

13 & 14

1 & 2

1 & 2

Open

Open

36MB

15 & 16

1 & 2

1 & 2

1 & 2

2 & 3

40MB

19 & 20

1 & 2

2 & 3

1 & 2

1 & 2

48MB

15 & 16

1 & 2

1 & 2

1 & 2

1 & 2

64MB

Open

1 & 2

1 & 2

1 & 2

1 & 2

Note: Pins designated should be in the closed position.

PARALLEL PORT IRQ CONFIGURATION

IRQ

SW2

IRQ7

pins 7 & 8 closed

IRQ5

pins 5 & 6 closed

PARALLEL PORT CONFIGURATION

IRQ

SW3

LPT1/378h

Open

LPT1/3BCh

pins 9 & 10 closed

LPT2/278h

pins 7 & 8 closed

Disabled

pins 7 & 8, 9 & 10 closed

NONCACHEABLE CONFIGURATION

Setting

SW4/1

SW4/2

None

Off

Off

256KB (3D80-3E80)

Off

Closed

512KB (3C80-3E80)

Closed

Off

1024KB (3A80-3E80)

Off

Off

Note: The location of SW4 is unidentified.

BUS SPEED CONFIGURATION

Setting

W14

W15

CPU speed/2

pins 2 & 3 closed

Closed

CPU speed/4

pins 1 & 2 closed

Open

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

Factory configured - do not alter

W2

closed

SRAM CONFIGURATION

Size

Cache

TAG

U9

SW5/switch 3

SW5/switch 4

W1

64KB

(8) 16K x 4

(2) 16K x 4

(1) 16K x 4

open

open

pins 1&2 and 3&4

256KB

(8) 64K x 4

(2) 64K x 4

(1) 16K x 4

closed

closed

open

Note: The location of SW5 on the mainboard is unknown.

Pins designated should be in the closed position.

USER CONFIGURABLE SETTINGS

Function

Jumper

Position

 

CPU type select 80486SX

W6

pins 1 & 2 closed

 

CPU type select 80486DX

W6

pins 2 & 3 closed

Factory configured - do not alter

W7

Closed

CACHE CONFIGURATION

Size

Bank 0

U21

64KB

(8) 16K x 4

(1) 16K x 4

256KB

(8) 64K x 4

NONE

CACHE JUMPER CONFIGURATION

Size

SW5/3

SW5/4

W1

W2

W5

64KB

Off

Off

2 & 3

2 & 3

Open

256KB

On

On

1 & 2

1 & 2

3 & 4, 5 & 6

Note: The location of SW5 on the mainboard is unidentified. Pins designated should be in the closed position.

BURST MODE CONFIGURATION

Setting

W3

W4

W5

Enabled

pins 2 & 3 closed

pins 2 & 3 closed

pins 1 & 2 closed

Disabled

pins 1 & 2 closed

pins 1 & 2 closed

Open