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 [Image] 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 J16 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 not SW1 pins 1 & 2 Open alter » Factory configured - do not SW1 pins 3 & 4 Closed alter » Factory configured - do not SW1 pins 5 & 6 Closed alter » 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 SW2 pins 1 & 2 Closed IRQ3 Serial port 2 interrupt select SW2 pins 1 & 2 Open none » Serial port 1 interrupt select SW2 pins 3 & 4 Closed IRQ4 Serial port 1 interrupt select SW2 pins 3 & 4 Open none » 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 SW4/3 On 486DX internal cache BIOS cache location select SW4/3 Off external cache » BIOS (E000-EFFFh) shadowing SW4/4 On enabled BIOS (E000-EFFFh) shadowing SW4/4 Off disabled » DRAM transparent refresh SW4/5 On enabled DRAM transparent refresh SW4/5 Off disabled » Factory configured - do not SW5/1 Off alter » Factory configured - do not SW5/2 On alter » IDE interface interrupt select SW21 On IRQ14 IDE interface interrupt select SW21 Off none » Floppy drive precompensation W2 pins 2 & 3 select standard closed Floppy drive precompensation W2 pins 1 & 2 select alternate closed » CPU speed select W3 pins 2 & 3 fast/switchable from keyboard 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 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 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, 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 [Image] 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) (2) (1) open open pins 16K x 16K x 16K x 1&2 4 4 4 and 3&4 256KB (8) (2) (1) closed closed open 64K x 64K x 16K x 4 4 4 Note: The location of SW5 on the mainboard is unknown. Pins designated should be in the closed position. [Image] 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 pins 2 & 3 pins 1 & 2 closed closed closed Disabled pins 1 & 2 pins 1 & 2 Open closed closed