ASUS COMPUTER INTERNATIONAL PCI/I-486SP3 Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2/Pentium Overdrive Processor 25/33/50(internal)/66(internal)MHz Speed Chip Set Intel Max. Onboard 128MB DRAM Cache 128/256/512KB BIOS Award Dimensions 330mm x 218mm I/O Options 32-bit PCI local bus slots (3), floppy drive interface, IDE interface, parallel port, SCSI interface, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Power LED & keylock CON1 IDE interface LED J22 Speaker CON2 32-bit PCI bus slot PCI1 Turbo LED CON3 32-bit PCI bus slot PCI2 Reset switch CON4 32-bit PCI bus slot PCI3 Turbo switch CON5 Serial port 1 S1 Floppy drive interface FDD Serial port 2 S2 IDE interface IDE Parallel port S3 SCSI interface LED J7 SCSI interface SCSI USER CONFIGURABLE SETTINGS Function Jumper Position » BIOS ROM select (2) 27512 J6 pins 2 & 3 closed BIOS ROM select (1) 271000 J6 pins 1 & 2 closed » IDE I/O Channel Ready disabled J16 Open IDE I/O Channel Ready enabled J16 Closed » Factory configured - do not J23 Closed alter » Factory configured - do not J24 Closed alter » Secondary cache speed 0 wait J33 pins 1 & 2 states closed Secondary cache speed 1 wait J33 pins 2 & 3 state closed » Factory configured - do not J34 pins 2 & 3 alter closed » Factory configured - do not J35 pins 1 & 2 alter closed » Secondary cache enabled J36 pins 1 & 2 closed Secondary cache disabled J36 pins 2 & 3 closed » Factory configured - do not J47 pins 2 & 3 alter closed » BIOS type select EPROM J48 pins 2 & 3 closed BIOS type select Flash BIOS J48 pins 1 & 2 closed » Onboard SCSI interface enabled J51 Open Onboard SCSI interface disabled J51 Closed » Floppy, IDE, Parallel, and JSMC pins 1 & 2 Serial ports enabled closed Floppy, IDE, Parallel, and JSMC pins 2 & 3 Serial ports disabled closed ONBOARD SCSI INTERFACE CONFIGURATION Onboard SCSI J17 J18 Present (PCI2 is slave) Open Open Absent (PCI2 is master) Closed Closed INTERRUPT IRQ5 CONFIGURATION Bus J3 ISA pins 1 & 2 closed PCI (INT A) pins 2 & 3 closed INTERRUPT IRQ9 CONFIGURATION Bus/Device J1 & J2 ISA J1/pin 1 & J2/pin 1 closed PCI (INT D) J1/pin 3 & J2/pin 3 closed SCSI J1/pin 2 & J2/pin 2 closed INTERRUPT IRQ11 CONFIGURATION Bus J4 ISA pins 1 & 2 closed PCI (INT B) pins 2 & 3 closed Note: The PCI bus can have only one IRQ on INT B (i.e. you can use IRQ11 or IRQ14 but not both). INTERRUPT IRQ14 CONFIGURATION Bus J49 J50 ISA pins 2 & 3 closed open PCI (INT A) pins 1 & 2 closed open PCI (INT B) open closed Note: The PCI bus can have only one IRQ on INT B (i.e. you can use IRQ11 or IRQ14 but not both). The PCI bus can have only one IRQ on INT A (i.e. you can use IRQ5 or IRQ14 but not both). The PCI bus can have only one IRQ on INT B (i.e. you can use IRQ11 or IRQ14 but not both). INTERRUPT IRQ15 CONFIGURATION Bus J5 ISA pins 1 & 2 closed PCI (INT C) pins 2 & 3 closed CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 NONE (1) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 512KB (4) 128K x 8 NONE (1) 32K x 8 CACHE JUMPER CONFIGURATION Size J25 J26 J37 J38 128KB pins 2 & 3 pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed closed 256KB pins 2 & 3 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed closed 512KB pins 1 & 2 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed closed Note:Pins designated should be in the closed position. CPU TYPE CONFIGURATION CPU Socket CP1 CP2 CP3 J43 80486SX PGA pins 2 & pins 1 Open Closed 3 & 2 80486SX PQFP 1 & 2 pins 2 pins 2 Closed and 3 & & 3 & 3 4 80487SX PGA 1 & 2 pins 2 pins 2 Closed and 3 & & 3 & 3 4 80486DX PGA 1 & 2 pins 1 pins 1 Closed and 3 & & 2 & 2 4 ODP486SX PGA 1 & 2 pins 2 pins 2 Closed and 3 & & 3 & 3 4 80486DX2 PGA 1 & 2 pins 1 pins 1 Closed and 3 & & 2 & 2 4 Pentium PGA 1 & 2 pins 2 pins 2 Open Overdrive and 3 & & 3 & 3 4 Note:Pins designated should be in the closed position. CPU SPEED CONFIGURATION Speed CS1 J31 J32 25MHz pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed 33MHz pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed 50i MHz pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed 66i MHz pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 2MB (1) 256K x (1) 256K x NONE NONE 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 4MB (1) 512K x (1) 512K x NONE NONE 36 36 6MB (1) 256K x (1) 256K x (1) 512K x (1) 512K x 36 36 36 36 6MB (1) 512K x (1) 512K x (1) 256K x (1) 256K x 36 36 36 36 8MB (1) 512K x (1) 512K x (1) 512K x (1) 512K x 36 36 36 36 8MB (1) 1M x 36 (1) 1M x 36 NONE NONE 10MB (1) 256K x (1) 256K x (1) 1M x 36 (1) 1M x 36 36 36 10MB (1) 1M x 36 (1) 1M x 36 (1) 256K x (1) 256K x 36 36 12MB (1) 512K x (1) 512K x (1) 1M x 36 (1) 1M x 36 36 36 12MB (1) 1M x 36 (1) 1M x 36 (1) 512K x (1) 512K x 36 36 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 2M x 36 (1) 2M x 36 NONE NONE 18MB (1) 256K x (1) 256K x (1) 2M x 36 (1) 2M x 36 36 36 18MB (1) 2M x 36 (1) 2M x 36 (1) 256K x (1) 256K x 36 36 20MB (1) 512K x (1) 512K x (1) 2M x 36 (1) 2M x 36 36 36 20MB (1) 2M x 36 (1) 2M x 36 (1) 512K x (1) 512K x 36 36 24MB (1) 1M x 36 (1) 1M x 36 (1) 2M x 36 (1) 2M x 36 24MB (1) 2M x 36 (1) 2M x 36 (1) 1M x 36 (1) 1M x 36 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 32MB (1) 4M x 36 (1) 4M x 36 NONE NONE 34MB (1) 256K x (1) 256K x (1) 4M x 36 (1) 4M x 36 36 36 34MB (1) 4M x 36 (1) 4M x 36 (1) 256K x (1) 256K x 36 36 36MB (1) 512K x (1) 512K x (1) 4M x 36 (1) 4M x 36 36 36 36MB (1) 4M x 36 (1) 4M x 36 (1) 512K x (1) 512K x 36 36 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 40MB (1) 4M x 36 (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 48MB (1) 2M x 36 (1) 2M x 36 (1) 4M x 36 (1) 4M x 36 48MB (1) 4M x 36 (1) 4M x 36 (1) 2M x 36 (1) 2M x 36 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 64MB (1) 8M x 36 (1) 8M x 36 NONE NONE 66MB (1) 256K x (1) 256K x (1) 8M x 36 (1) 8M x 36 36 36 66MB (1) 8M x 36 (1) 8M x 36 (1) 256K x (1) 256K x 36 36 68MB (1) 512K x (1) 512K x (1) 8M x 36 (1) 8M x 36 36 36 68MB (1) 8M x 36 (1) 8M x 36 (1) 512K x (1) 512K x 36 36 72MB (1) 1M x 36 (1) 1M x 36 (1) 8M x 36 (1) 8M x 36 72MB (1) 8M x 36 (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 80MB (1) 2M x 36 (1) 2M x 36 (1) 8M x 36 (1) 8M x 36 80MB (1) 8M x 36 (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 96MB (1) 4M x 36 (1) 4M x 36 (1) 8M x 36 (1) 8M x 36 96MB (1) 8M x 36 (1) 8M x 36 (1) 4M x 36 (1) 4M x 36 128MB (1) 8M x 36 (1) 8M x 36 (1) 8M x 36 (1) 8M x 36