NORTHGATE COMPUTER SYSTEMS, INC. SLIMLINE CACHE 25/33 Processor 80386DX Processor Speed 25/33MHz Chip Set OPTI Max. Onboard DRAM 16MB Cache 64/256KB BIOS AMI Dimensions 350mm x 304mm I/O Options Floppy drive interface, IDE interface, parallel port, serial ports (2), VGA port NPU Options 80387/3167 [Image] CONNECTIONS Purpose Location Purpose Location VGA port J1 Serial port 2 J10 Turbo LED J3 Parallel port J15 Power LED & keylock J4 Floppy drive interface J16 Speaker J5 IDE interface J17 Reset switch J6 Riser card R1 IDE interface LED J8 Turbo switch W6 Serial port 1 J9 USER CONFIGURABLE SETTINGS Function Jumper Position » Floppy drive interface interrupt SW2/pins 11 & Closed (IRQ6) enabled 12 Floppy drive interface interrupt SW2/pins 11 & Open (IRQ6) disabled 12 » Floppy drive interface DMARQ2 SW2/pins 13 & Closed enabled 14 Floppy drive interface DMARQ2 SW2/pins 13 & Open disabled 14 » Floppy drive interface DACK2 SW2/pins 15 & Closed enabled 16 Floppy drive interface DACK2 SW2/pins 15 & Open disabled 16 » Floppy drive interface enabled SW3/pins 1 & Closed 2 Floppy drive interface disabled SW3/pins 1 & Open 2 » Factory configured - do not alter W1 Open » Cache enabled W4 Closed Cache disabled W4 Open » BIOS type select 27512 W5 pins 2 & 3 closed BIOS type select 27256 W5 pins 1 & 2 closed » Monitor type select monochrome W7 pins 1 & 2 closed Monitor type select color W7 pins 2 & 3 closed » Parallel port mode select input W13 pins 2 & 3 only closed Parallel port mode select W13 pins 1 & 2 bi-directional closed » Floppy drive precompensation W17 pins 2 & 3 select standard closed Floppy drive precompensation W17 pins 1 & 2 select alternate closed » Floppy drive mode select single W18 pins 1 & 2 speed closed Floppy drive mode select dual W18 pins 2 & 3 speed closed DRAM CONFIGURATION (PAL CHIP "A" INSTALLED AT U44) 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 DRAM JUMPER CONFIGURATION (PAL CHIP "A" INSTALLED AT U44) Size W8 W9 W10 W11 SW1 1MB 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2, 5 & 6, 7 & 8, 9 & 10 2MB 2 & 3 2 & 3 2 & 3 2 & 3 1 & 2, 5 & 6, 7 & 8 4MB 1 & 2 2 & 3 1 & 2 2 & 3 7 & 8, 9 & 10 8MB 1 & 2 2 & 3 1 & 2 2 & 3 7 & 8 Note: Pins designated should be in the closed position. DRAM CONFIGURATION (PAL CHIP "B" INSTALLED AT U44) Size Bank 0 Bank 1 4MB (4) 1M x 9 NONE 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE DRAM JUMPER CONFIGURATION (PAL CHIP "B" INSTALLED AT U44) Size W8 W9 W10 W11 SW1 4MB 1 & 2 2 & 3 1 & 2 2 & 3 7 & 8, 9 & 10 8MB 1 & 2 2 & 3 1 & 2 2 & 3 7 & 8 16MB 1 & 2 1 & 2 1 & 2 1 & 2 5 & 6, 7 & 8, 9 & 10 Note: Pins designated should be in the closed position. CACHE CONFIGURATION Size Bank 0 64KB (10) 8K x 8 256KB (10) 32K x 8 CACHE CONFIGURATION Size W2 W3 64KB pins 1 & 2 closed pins 1 & 2 closed 256KB pins 2 & 3 closed pins 2 & 3 closed IDE CONFIGURATION Setting W20 W21 Enabled Open Closed Disabled Closed Open PARALLEL PORT ADDRESS CONFIGURATION Address SW3 378h Open 3BCh pins 11 & 12 closed 278h pins 9 & 10 closed Disabled pins 9 & 10, 11 & 12 closed PARALLEL PORT IRQ CONFIGURATION IRQ SW2 IRQ7 pins 9 & 10 closed IRQ5 pins 7 & 8 closed SERIAL PORT 1 CONFIGURATION Setting SW2 SW3 Enabled pins 5 & 6 closed Open Disabled Open pins 7 & 8 closed SERIAL PORT 2 CONFIGURATION Setting SW2 SW3 Enabled pins 3 & 4 closed Open Disabled Open pins 3 & 4 closed VIDEO CONFIGURATION Setting SW5 Enabled pins 1 & 2, 3 & 4, 5 & 6 closed Disabled pins 7 & 8 closed