DATAEXPERT CORPORATION AIO8554 Device Type Mainboard Processor Pentium Processor Speed 75/90/100/120/133MHz Chip Set Unidentified Video Chip Set Unidentified Maximum Onboard Memory 128MB Maximum Video Memory 2MB Cache 256/512KB BIOS AMI Dimensions 330mm x 210mm I/O Options Floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot, wavetable connector, audio in – CD-ROMs (3), MIDI connector [Image] CONNECTIONS Purpose Location Purpose Location Serial port 1 J1 Audio in – CD-ROM J14 (Panasonic) Serial port 2 J2 Audio in – CD-ROM J15 (Sony) Parallel port J3 Audio in – J16 CD-ROM(Mitsumi) VGA port J4 Reset switch J17 External battery J6 Turbo LED J18 VGA feature J7 Turbo switch J19 connector IDE interface 1 J8 Speaker J20 IDE interface 2 J9 Power LED & keylock J21 IDE interface LED J10 Green PC connector JP18 IDE interface LED J11 MIDI connector JP38 Floppy drive J12 PS/2 mouse port M1 interface Wavetable J13 Riser slot SL1 connector USER CONFIGURABLE SETTINGS Function Label Position » CMOS memory normal operation JP11 Pins 2 & 3 closed CMOS memory clear JP11 Pins 1 & 2 closed » CMOS memory normal operation JP12 Open (12887A clock only) CMOS memory clear (12887A clock JP12 Closed only) Printer mode select standard JP15 Closed Printer mode select EPP/ECP JP15 Open Feature function disabled JP40 Open Feature function enabled JP40 Closed SIMM CONFIGURATION Size Bank 0 Bank 1 2MB (2) 256K x 36 None 4MB (2) 512K x 36 None 4MB (2) 256K x 36 (2) 256K x 36 6MB (2) 512K x 36 (2) 256K x 36 8MB (2) 1M x 36 None 8MB (2) 512K x 36 (2) 512K x 36 10MB (2) 1M x 36 (2) 256K x 36 12MB (2) 512K x 36 (2) 1M x 36 SIMM CONFIGURATION (CON’T) Size Bank 0 Bank 1 16MB (2) 2M x 36 None 16MB (2) 1M x 36 (2) 1M x 36 18MB (2) 2M x 36 (2) 256K x 36 20MB (2) 512K x 36 (2) 2M x 36 24MB (2) 2M x 36 (2) 1M x 36 32MB (2) 4M x 36 None 32MB (2) 2M x 36 (2) 2M x 36 34MB (2) 4M x 36 (2) 256K x 36 36MB (2) 512K x 36 (2) 4M x 36 40MB (2) 4M x 36 (2) 1M x 36 48MB (2) 2M x 36 (2) 4M x 36 64MB (2) 8M x 36 None 64MB (2) 4M x 36 (2) 4M x 36 66MB (2) 8M x 36 (2) 256K x 36 68MB (2) 512K x 36 (2) 8M x 36 72MB (2) 8M x 36 (2) 1M x 36 80MB (2) 2M x 36 (2) 8M x 36 96MB (2) 8M x 36 (2) 4M x 36 128MB (2) 8M x 36 (2) 8M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 Bank 2 TAG 256KB (A) None None (2) 32K x Unidentified 36 256KB (B) (2) 32K x None None (1) 8K/16K/32K x 8 32 512KB (2) 32K x (2) 32K x None (1) 16K/32K x 8 32 32 CACHE JUMPER CONFIGURATION Size JP22 JP31 256KB (B) Open Pins 1 & 2 closed 512KB Closed Pins 2 & 3 closed VIDEO MEMORY CONFIGURATION Note: The video chips sizes are unidentified. CPU SPEED SELECTION CPU Clock Multiplier JP24 JP27 JP29 JP30 speed speed 75MHz 50MHz 1.5x Open Open Open Open 90MHz 60MHz 1.5x Closed Open Open Open 100MHz 66MHz 1.5x Closed Closed Open Open 120MHz 60MHz 2x Closed Open Closed Open 133MHz 66MHz 2x Closed Closed Closed Open DMA CHANNEL SELECTION Channel JP13 JP14 1 Pins 1 & 2 closed Pins 1 & 2 closed 3 Pins 2 & 3 closed Pins 2 & 3 closed