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# 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 64MB
DRAM
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
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Proprietary CPU | CPU1 | Serial port 1 | J9 |
| card | | | |
|-------------------+----------+------------------+----------|
| External battery | J2 | Serial port 2 | J10 |
|-------------------+----------+------------------+----------|
| Turbo LED | J4 | Parallel port | J15 |
|-------------------+----------+------------------+----------|
| Power LED & | J5 | Floppy drive | J16 |
| keylock | | interface | |
|-------------------+----------+------------------+----------|
| 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 | SW1 pins 1 & | Open |
| | not alter | 2 | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1 pins 3 & | Closed |
| | not alter | 4 | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW1 pins 5 & | Closed |
| | not alter | 6 | |
|---+---------------------------+---------------+------------|
| » | Video BIOS shadowing | SW1 pins 7 & | Closed |
| | enabled | 8 | |
|---+---------------------------+---------------+------------|
| | Video BIOS shadowing | SW1 pins 7 & | Open |
| | disabled | 8 | |
|---+---------------------------+---------------+------------|
| » | SCSI BIOS shadowing | SW1 pins 9 & | Open |
| | disabled | 10 | |
|---+---------------------------+---------------+------------|
| | SCSI BIOS shadowing | SW1 pins 9 & | Closed |
| | enabled | 10 | |
|---+---------------------------+---------------+------------|
| » | ROM BIOS shadowing | SW1 pins 11 & | Closed |
| | enabled | 12 | |
|---+---------------------------+---------------+------------|
| | ROM BIOS shadowing | SW1 pins 11 & | Open |
| | disabled | 12 | |
|---+---------------------------+---------------+------------|
| » | Serial port 2 interrupt | SW2 pins 1 & | Closed |
| | select IRQ3 | 2 | |
|---+---------------------------+---------------+------------|
| | Serial port 2 interrupt | SW2 pins 1 & | Open |
| | select none | 2 | |
|---+---------------------------+---------------+------------|
| » | Serial port 1 interrupt | SW2 pins 3 & | Closed |
| | select IRQ4 | 4 | |
|---+---------------------------+---------------+------------|
| | Serial port 1 interrupt | SW2 pins 3 & | Open |
| | select none | 4 | |
|---+---------------------------+---------------+------------|
| » | Floppy drive interface | SW3 pins 1 & | Open |
| | enabled | 2 | |
|---+---------------------------+---------------+------------|
| | Floppy drive interface | SW3 pins 1 & | Closed |
| | enabled | 2 | |
|---+---------------------------+---------------+------------|
| » | Serial port 2 select | SW3 pins 3 & | Open |
| | COM2/2F8h | 4 | |
|---+---------------------------+---------------+------------|
| | Serial port 2 disabled | SW3 pins 3 & | Closed |
| | | 4 | |
|---+---------------------------+---------------+------------|
| » | Serial port 1 select | SW3 pins 5 & | Open |
| | COM1/3F8h | 6 | |
|---+---------------------------+---------------+------------|
| | Serial port 1 disabled | SW3 pins 5 & | Closed |
| | | 6 | |
|---+---------------------------+---------------+------------|
| » | BIOS cache location | SW4/3 | On |
| | select 486DX internal | | |
| | cache | | |
|---+---------------------------+---------------+------------|
| | BIOS cache location | SW4/3 | Off |
| | select external cache | | |
|---+---------------------------+---------------+------------|
| » | BIOS (E000-EFFFh) | SW4/4 | On |
| | shadowing enabled | | |
|---+---------------------------+---------------+------------|
| | BIOS (E000-EFFFh) | SW4/4 | Off |
| | shadowing disabled | | |
|---+---------------------------+---------------+------------|
| » | DRAM transparent refresh | SW4/5 | On |
| | enabled | | |
|---+---------------------------+---------------+------------|
| | DRAM transparent refresh | SW4/5 | Off |
| | disabled | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW5/1 | Off |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | Factory configured - do | SW5/2 | On |
| | not alter | | |
|---+---------------------------+---------------+------------|
| » | IDE interface interrupt | SW21 | On |
| | select IRQ14 | | |
|---+---------------------------+---------------+------------|
| | IDE interface interrupt | SW21 | Off |
| | select none | | |
|---+---------------------------+---------------+------------|
| » | Floppy drive | W2 | pins 2 & 3 |
| | precompensation select | | closed |
| | standard | | |
|---+---------------------------+---------------+------------|
| | Floppy drive | W2 | pins 1 & 2 |
| | precompensation select | | closed |
| | alternate | | |
|---+---------------------------+---------------+------------|
| » | CPU speed select | W3 | pins 2 & 3 |
| | fast/switchable from | | closed |
| | keyboard | | |
|---+---------------------------+---------------+------------|
| | 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 | W4 | pins 1 & 2 |
| | monochrome | | closed |
|---+---------------------------+---------------+------------|
| » | CMOS memory normal | W7 | Open |
| | operation | | |
|---+---------------------------+---------------+------------|
| | CMOS memory clear | W7 | Closed |
|---+---------------------------+---------------+------------|
| » | Parallel port mode select | W13 | pins 2 & 3 |
| | bi-directional | | closed |
|---+---------------------------+---------------+------------|
| | Parallel port mode select | W13 | pins 1 & 2 |
| | input only | | closed |
|---+---------------------------+---------------+------------|
| » | Floppy drive type select | W18 | pins 1 & 2 |
| | single-speed | | closed |
|---+---------------------------+---------------+------------|
| | Floppy drive type select | W18 | pins 2 & 3 |
| | dual-speed | | 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 | NONE | NONE |
| | | 9 | | |
|------+--------------+------------+------------+------------|
| 4MB | (4) 1M x 9 | NONE | NONE | NONE |
|------+--------------+------------+------------+------------|
| 6MB | (4) 256K x 9 | (4) 256K x | (4) 1M x 9 | NONE |
| | | 9 | | |
|------+--------------+------------+------------+------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
|------+--------------+------------+------------+------------|
| 10MB | (4) 256K x 9 | (4) 256K x | (4) 1M x 9 | (4) 1M x 9 |
| | | 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, | 2 & 3 | 2 & 3 | Open | Open |
| | 17 & 18, 19 & 20 | | | | |
|------+---------------------+-------+-------+-------+-------|
| 2MB | 13 & 14, 17 & 18, | 2 & 3 | 2 & 3 | Open | Open |
| | 19 & 20 | | | | |
|------+---------------------+-------+-------+-------+-------|
| 4MB | 13 & 14, 15 & 16, | 1 & 2 | 2 & 3 | Open | Open |
| | 17 & 18 | | | | |
|------+---------------------+-------+-------+-------+-------|
| 6MB | 15 & 16, 17 & 18, | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 |
| | 19 & 20 | | | | |
|------+---------------------+-------+-------+-------+-------|
| 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 |
+------------------------------------------------------------+
(IMG) IMG 2
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------------+--------+----------|
| » | Factory configured - do not alter | W2 | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache | TAG | U9 | SW5/switch | SW5/switch | W1 |
| | | | | 3 | 4 | |
|-------+-------+-----+-----+------------+------------+------|
| 64KB | (8) | (2) | (1) | open | open | pins |
| | 16K x | 16K | 16K | | | 1&2 |
| | 4 | x 4 | x 4 | | | and |
| | | | | | | 3&4 |
|-------+-------+-----+-----+------------+------------+------|
| 256KB | (8) | (2) | (1) | closed | closed | open |
| | 64K x | 64K | 16K | | | |
| | 4 | x 4 | x 4 | | | |
|------------------------------------------------------------|
| Note: The location of SW5 on the mainboard is unknown. |
| |
| Pins designated should be in the closed position. |
+------------------------------------------------------------+
(IMG) IMG 3
+------------------------------------------------------------+
| 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 | W7 | Closed |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|----------+----------------+----------------+---------------|
| Disabled | pins 1 & 2 | pins 1 & 2 | Open |
| | closed | closed | |
+------------------------------------------------------------+