AMPRO COMPUTERS, INC. LITTLE BOARD/386SX Processor 80386SX Processor Speed 25MHz Chip Set Ampro Max. onboard DRAM 16MB Cache None BIOS Award Dimensions 330mm x 218mm I/O Options Floppy drive interface, IDE interface, parallel port, SCSI connector, serial ports (2) NPU Options 80387SX [Image] CONNECTIONS Purpose Location Purpose Location Power connector J1 SCSI interface J7 Serial port (COM2) J2 Floppy drive interface J8 Serial port (COM1) J3 IDE interface J11 Keyboard J5 Power J1-1 to +12V BUS W7 Parallel port J6 USER CONFIGURABLE SETTINGS Function Jumper/Switch Position » SCSI controller enabled W1 Closed SCSI controller disabled W1 Open » SCSI controller select IRQ3 W2 & W3 Closed SCSI controller select none W2 & W3 Open » Factory configured - do not W4 Open alter » Factory configured - do not W5 Open alter » SCSI termination power W6 Closed enabled SCSI termination power none W6 Open » Floppy clock select 16MHz W10 Closed Floppy clock select none W10 Open » Flash EPROM programming power W16 Open +12V to Byte-wide Flash EPROm programming power W16 Closed disabled » Watchdog timer output W17 Open selection Watchdog timer output none W17 Closed » Factory configured - do not W18 Open alter » Floppy PCVAL selection W19 Open Floppy PCVAL none W19 Closed » Factory configured - do not W21 N/A alter » Factory configured - do not W22 N/A alter » Power fail NMI enabled W23 Open Power fail NMI none W23 Closed » Parallel port interrrupt W24 Open option select via setup Parallel port interrrupt W24 Closed option none DRAM CONFIGURATION Size Bank 0 Bank 1 512KB (2) 256K x 9 NONE 1MB (2) 256K x 9 (2) 256K x 9 2MB (2) 1M x 9 (2) 256K x 9 4MB (2) 1M x 9 (2) 1M x 9 8MB (2) 4M x 9 NONE 10MB (2) 1M x 9 (2) 4M x 9 16MB (2) 4M x 9 (2) 4M x 9 EPROM CONFIGURATION (S0) EPROM W8 W9 W25 27C256 Open pins 7 & 8, 10 & 11 pins 1 & 2 27C512 Open pins 1 & 4, 7 & 8, 10 pins 1 & 2 & 11 27C010 Open pins 1 & 4, 2 & 5, 6 & pins 1 & 2 9, 7 & 8 27C020 Open pins 1 & 4, 2 & 5, 6 & pins 1 & 2 9, 7 & 8, 11 & 12 27C040 Open pins 1 & 4, 2 & 3, 6 & pins 1 & 2 9, 7 & 8, 11 & 12 27C080 Closed pins 1 & 4, 2 & 3, 7 & pins 1 & 2 8, 11 & 12 62256 Open pins 4 & 7, 5 & 8, 10 pins 1 & 2 & 11 or 2 & 3 628128 Open pins 1 & 2, 4 & 7, 5 & pins 1 & 2 8, 10 & 11 or 2 & 3 uPD434000 Open pins 1 & 2, 3 & 6, 4 & pins 1 & 2 7, 5 & 8, 11 & 12 or 2 & 3 28F256 Open pins 2 & 5, 6 & 9, 7 & pins 1 & 2 8 28F512 Open pins 1 & 4, 2 & 5, 6 & pins 1 & 2 9, 7 & 8 28F010 Open pins 1 & 4, 2 & 5, 6 & pins 1 & 2 9, 7 & 8 28F020 Open pins 1 & 4, 2 & 5, 6 & pins 1 & 2 9, 7 & 8, 11 & 12 Note:Pins designated should be in the closed position. EPROM/FLASH EPROM CONFIGURATION (S1 & S2) EPROM W12 W13 W14 W15 128KB pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed closed 256KB pins 2 & 3 pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed closed