NORTHGATE COMPUTER SYSTEMS, INC. SLIMLINE SP Processor 80386DX/80486DX Processor Speed 25/33MHz Chip Set VLSI Max. Onboard DRAM 64MB Cache 64/256KB BIOS AMI Dimensions 350mm x 304mm I/O Options Proprietary CPU/NPU module slot, parallel port, serial ports (2), floppy drive interface, IDE interface, VGA port NPU Options 80387/3167/4167 (on external CPU/NPU card) [Image] CONNECTIONS Purpose Location Purpose Location Proprietary CPU module CPU1 Serial port 1 J9 VGA port J1 Serial port 2 J10 External battery J2 Parallel port LPT1 J15 Turbo LED J4 Floppy drive interface J16 Power LED & keylock J5 IDE interface J17 Reset switch J6 Speaker J19 IDE interface LED J8 Riser card R1 USER CONFIGURABLE SETTINGS Function Jumper Position » Floppy drive write precomp select W2 pins 2 & 3 alternate closed Floppy drive write precomp select W2 pins 1 & 2 normal closed » Factory configured - do not alter W3 N/A » Monitor type select monochrome W4 pins 1 & 2 closed Monitor type select color W4 pins 2 & 3 closed » CMOS memory normal operation W8 Open CMOS memory clear W8 Closed » Parallel port mode select W13 pins 2 & 3 bi-directional closed Parallel port mode select input W13 pins 1 & 2 only closed » Floppy drive mode select single W18 pins 1 & 2 speed closed Floppy drive mode select dual W18 pins 2 & 3 speed closed » Factory configured - do not alter W27 N/A » Factory configured - do not alter W29 N/A » Factory configured - do not alter SW1 pins 1 & N/A 2 » Factory configured - do not alter SW1 pins 5 & N/A 6 » VGA BIOS shadowing enabled SW1 pins 11 & Closed 12 VGA BIOS shadowing disabled SW1 pins 11 & Open 12 » BIOS shadowing enabled SW1 pins 11 & Closed 12 BIOS shadowing disabled SW1 pins 11 & Open 12 » IRQ6 enabled SW2 pins 9 & Closed 10 IRQ6 disabled SW2 pins 9 & Open 10 » Floppy drive interface enabled SW3 pins 1 & Open 2 Floppy drive interface disabled SW3 pins 1 & Closed 2 Note:The locations of W8 & W29 are unidentified. DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (4) 256K x 9 NONE 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE 32MB (4) 4M x 9 (4) 4M x 9 DRAM JUMPER/SWITCH CONFIGURATION Size SW1 W5 W6 1MB 3 & 4, 17 & 18, 2 & 3 2 & 3 19 & 20 2MB 17 & 18, 19 & 20 2 & 3 2 & 3 4MB 3 & 4, 17 & 18 1 & 2 2 & 3 8MB 17 & 18 1 & 2 2 & 3 16MB 3 & 4 1 & 2 1 & 2 32MB Open 1 & 2 1 & 2 Note: Pins designated should be in the closed position. IDE CONFIGURATION Setting SW21 W20 Enabled Closed Open Disabled Open Closed PARALLEL PORT IRQ CONFIGURATION IRQ SW2 IRQ5 pins 5 & 6 closed IRQ7 pins 7 & 8 closed PARALLEL PORT CONFIGURATION Setting SW3 LPT1/3BCh pins 9 & 10 closed LPT1/378h Open LPT2/278h pins 7 & 8 closed Disabled pins 7 & 8, 9 & 10 closed SERIAL PORT 1 CONFIGURATION Setting SW2 SW3 Enabled pins 1 & 2 closed Open Disabled Open pins 5 & 6 closed SERIAL PORT 2 CONFIGURATION Setting SW2 SW3 Enabled pins 3 & 4 closed Open Disabled Open pins 3 & 4 closed VIDEO CONFIGURATION Setting SW5 W19 Enabled pins 1 & 2, 3 & 4, 5 pins 1 & 2 closed & 6 closed Disabled Open pins 2 & 3 closed BIOS CONFIGURATION Setting SW1 F000-FFFF (VGA BIOS disabled) pins 7 & 8, 9 & 10 closed F000-FFFF, E000-EFFF (VGA BIOS disabled, pins 7 & 8 closed BIOS shadowing enabled) F000-FFFF VGA BIOS at C000-C7FF pins 9 & 10 closed F000-FFFF VGA BIOS at C000-C7FF, IDE pins 9 & 10 closed interface at C800-CFFF [Image] CACHE CONFIGURATION Size Bank 0 64KB (8) 8K x 8 256KB (8) 32K x 8 CACHE JUMPER CONFIGURATION Size W1 64KB Open 256KB pins 1 & 2, 3 & 4 closed [Image] USER CONFIGURABLE SETTINGS Setting W3 W4 W5 Burst mode pins 2 & 3 pins 2 & 3 pins 1 & 2 enabled closed closed closed Burst mode pins 1 & 2 pins 1 & 2 pins 1 & 2 enabled closed closed closed CACHE CONFIGURATION Size Bank 0 64KB (8) 8K x 8 256KB (8) 32K x 8 CACHE JUMPER CONFIGURATION Size W1 W2 W5 64KB pins 1 & 2 pins 1 & 2 Open closed closed 256KB pins 2 & 3 pins 2 & 3 pins 3 & 4, 5 & 6 closed closed closed