AMPRO COMPUTERS, INC. LITTLE BOARD/PC Processor 8088 Processor Speed 7MHz Chip Set Unidentified Video Chip Set None Maximum Onboard Memory 640KB Maximum Video Memory None Cache None BIOS Ampro Dimensions 203mm x 146mm I/O Options Floppy drive interface, SCSI connector, parallel port, serial ports (2), PC bus interface NPU Options NEC uPD72191 [Image] CONNECTIONS Purpose Location Purpose Location Serial port (V40) J2 Keyboard connector J5 Serial port J3 Parallel port J6 Speaker J4 pins 1 & SCSI interface J7 2 Reset switch J4 pins 3 & Floppy drive J8 4 interface Power LED J4 pins 5 & PC bus interface J9 6 Auxiliary power for J4 pins 7 - PC bus connector 10 USER CONFIGURABLE SETTINGS Function Label Position » DMA END (TC) signal disabled W1 Open DMA END (TC) signal enabled W1 Closed » 5v termination power to pin 26 W4 Open of SCSI disabled 5v termination power to pin 26 W4 Closed of SCSI enabled » PC bus IRQ5 disabled W6 Open PC bus IRQ5 enabled W6 Closed » Factory configured - do not W9 Open alter » Floppy drive IRQ6 enabled W10 Closed Floppy drive IRQ6 disabled W10 Open » Parallel port LPT select LPT1 W11 Open Parallel port LPT select LPT2 W11 Closed » Factory configured - do not W21 Unidentified alter » Factory configured - do not W22 Unidentified alter » Factory configured - do not W26 Unidentified alter » Factory configured - do not W27 Unidentified alter » Factory configured - do not W28 Unidentified alter » NPU not installed W30 Open NPU installed W30 Closed » Monitor type select CGA W31 Closed Monitor type select monochrome W31 Open » Factory configured - do not W34 Unidentified alter » Write precomp speed select W39 Open 125ns Write precomp speed select W39 Closed 187ns » Drive speed select single speed W40 Open Drive speed select dual speed W40 Closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 256KB SIMM installed None None 512KB SIMM installed SIMM installed None 640KB SIMM installed SIMM installed SIMM installed Note: The size of the DRAM chips are unidentified. DRAM JUMPER CONFIGURATION Size W19 W20 256KB Closed Closed 512KB Open Closed 640KB Closed Open PROM SOCKET SELECTION (U26) Type Address W35 W36 W37 W38 » Empty N/A Open Open Open N/A 2764 E0000h Open Open Closed Open 2764 E4000h Closed Closed Open Open 2764 E8000h Open Closed Open Open 2764 EC000h Closed Open Open Open 27256 E0000h Open Closed Closed Closed 27256 E8000h Closed Open Closed Closed 27512 E0000h Closed Closed Closed Closed MEMORY OPTION SELECTION Type W8 W12 W13 W14 W15 W16 W41 » None Open Open Open Open Open Open Open 2764 Closed Closed Open Open Open Open 2 & 3 27256 Open Closed Open Closed Closed Open 2 & 3 6264 Closed Closed Open Open Open Closed Open 62256 Open Closed Open Closed Open Closed 1 & 2 Note: Pins designated should be in the closed position. FLOPPY DMA CHANNEL SELECTION Channel W5 W7 1 Pins 1 & 2 closed Pins 1 & 2 closed » 2 Pins 2 & 3 closed Pins 2 & 3 closed SCSI DMA CHANNEL SELECTION Channel W2 W3 1 Pins 2 & 3 closed Pins 2 & 3 closed » 3 Pins 1 & 2 closed Pins 1 & 2 closed SERIAL PORT ADDRESS SELECTION Setting Address IRQ W17 W18 W29 » COM1 3F8h - IRQ4 Closed Open Open (3F8h) 3FF COM2 2F8h - IRQ3 Open Closed Closed (2F8h) 2FF FLOPPY DRIVE SELECTION Drives installed W32 W33 1 Closed Closed 2 Closed Open 3 (not supported) Open Closed 4 (not supported) Open Open SCSI BUS ID SELECTION ID W23 W24 W25 0 Closed Closed Closed 1 Open Closed Closed 2 Closed Open Closed 3 Open Open Closed 4 Closed Closed Open 5 Open Closed Open 6 Closed Open Open » 7 Open Open Open