AMERICAN MEGATRENDS, INC. AMI 386SX-II Processor 80386SX Processor Speed 20/25MHz Chip Set AMI Max. Onboard DRAM 16MB Cache 32KB BIOS AMI Dimensions 330mm x 218mm I/O Options Floppy interface, IDE interface, parallel port, serial ports (2) NPU Options 80387SX [Image] CONNECTIONS Purpose Location Purpose Location IDE interface LED J1 Turbo switch J16 External battery J7 Parallel port P4 Reset switch J10 Serial port 1 P5 Turbo LED J11 Serial port 2 P6 Power LED & keylock J12 Floppy interface P7 Speaker J15 IDE interface P8 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » DRAM address sequence J2 pins 1 & 2, 3 & select bank 1, then bank 2 4 closed DRAM address sequence J2 pins 2 & 3, 4 & select bank 2, then bank 1 5 closed » Serial port 2 select IRQ3 J3 pins 2 & 3 closed Serial port 2 select IRQ4 J3 pins 1 & 2 closed » Serial port 1 select IRQ3 J4 pins 2 & 3 closed Serial port 1) select IRQ4 J4 pins 1 & 2 closed » Factory configured - do not J5 pins 1 & 2 alter closed » On board battery enabled J6 Closed On board battery disabled J6 Open » Parallel port select IRQ7 J8 pins 2 & 3 closed Parallel port select IRQ5 J8 pins 1 & 2 closed » Power good signal detect J9 pins 2 & 3 from power supply closed Power good signal detect J9 pins 1 & 2 from board closed » Factory configured - do not J13 pins 2 & 3 alter closed » Factory configured - do not J14 pins 1 & 2 alter closed » CMOS memory normal J17 Open operation CMOS memory clear J17 Closed » Factory configured - do not J18 Open alter » Factory configured - do not SW1/1 Off alter Monitor type select color SW1/2 On Monitor type select SW1/2 Off monochrome Note : Cache is factory installed and is not configurable. The size of the cache & tag chips are unidentified. DRAM CONFIGURATION Size Bank 1 Bank 2 1MB (4) 256K x 9 NONE 2MB (4) 256K x 9 (4) 256K x 9 4MB (4) 1M x 9 NONE 5MB (4) 1M x 9 (4) 256K x 9 8MB (4) 1M x 9 (4) 1M x 9 16MB (4) 4M x 9 NONE