AMPRO COMPUTERS, INC. LITTLE BOARD/486I Processor 80486DX2/80486DX4 Processor Speed 50(internal)/100(internal)MHz Chip Set OPTI Video Chip Set Unidentified Maximum Onboard 64MB Memory Maximum Video Memory 1MB Cache None BIOS Award Dimensions 203mm x 146mm I/O Options Ethernet 10BaseT connector, AUI connector, floppy drive interface, IDE interface, SCSI-II interface, parallel port, serial ports (4), VGA interface, flat panel connector, external video overlay, LCD bias supply, PC/104 connectors (2), utility/keyboard connector NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Flat panel J3 Serial port 1 & 2 J11 connector LCD bias supply J4 IDE interface J12 VGA interface J5 Serial port 3 & 4 J13 External video J6 Floppy drive interface J14 overlay Ethernet 10BaseT J7 Parallel port J15 connector AUI connector J8 Utility/keyboard J16 connector SCSI-II interface J9 PC/104 connector P18 DC power J10 PC/104 connector P20 Note: Alternate external LAN media are available by means of AUI interface & optional MAUs. USER CONFIGURABLE SETTINGS Function Label Position Negative vee enabled W1 Pins 1 & 2 closed Negative vee disabled W1 Pins 2 & 3 closed » Factory configured - do not W3 Unidentified alter » Factory configured - do not W8 Unidentified alter » Factory configured - do not W9 Unidentified alter » Factory configured - do not W10 Unidentified alter » Factory configured - do not W11 Unidentified alter » Factory configured - do not W12 Unidentified alter » Factory configured - do not W13 Unidentified alter » Factory configured - do not W16 Unidentified alter Watch dog timer select IOCHK W17 Pins 1 & 2 closed Watch dog timer select RESET W17 Pins 2 & 3 closed » Factory configured - do not W20 Unidentified alter » Factory configured - do not W22 Unidentified alter Low shift clock enabled W23 Pins 1 & 2 closed High shift clock enabled W23 Pins 2 & 3 closed » Factory configured - do not W24 Unidentified alter DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (1) 256K x 32 None 2MB (1) 512K x 32 None 2MB (1) 256K x 32 (1) 256K x 32 4MB (1) 1M x 32 None 4MB (1) 512K x 32 (1) 512K x 32 8MB (1) 2M x 32 None 8MB (1) 1M x 32 (1) 1M x 32 12MB (1) 2M x 32 (1) 1M x 32 16MB (1) 4M x 32 None 17MB (1) 4M x 32 (1) 256K x 32 18MB (1) 4M x 32 (1) 512K x 32 20MB (1) 4M x 32 (1) 1M x 32 24MB (1) 4M x 32 (1) 2M x 32 32MB (1) 8M x 32 None 32MB (1) 8M x 32 (1) 4M x 32 34MB (1) 8M x 32 (1) 512K x 32 36MB (1) 8M x 32 (1) 1M x 32 40MB (1) 8M x 32 (1) 2M x 32 48MB (1) 8M x 32 (1) 4M x 32 64MB (1) 8M x 32 (1) 8M x 32 VIDEO MEMORY CONFIGURATION Note: The location of the 512KB/1MB video memory is unidentified. DMA CHANNEL SELECTION Channel W18 W19 1 Pins 1 & 2 closed Pins 1 & 2 closed 3 Pins 2 & 3 closed Pins 2 & 3 closed SERIAL PORT 1 INTERRUPT SELECTION IRQ W4 W6 IRQ4 shared with Pins 1 & 2 closed Open serial 1 IRQ4 not shared Pins 2 & 3 closed Closed SERIAL PORT 2 INTERRUPT SELECTION IRQ W5 W7 IRQ3 shared with Pins 1 & 2 closed Open serial 2 IRQ3 not shared Pins 2 & 3 closed Closed BIOS SELECTION IN S0 & S1 (EPROM) Type W2 W14 W15 W21 27C64 Open 2 & 5, 7 & 2 & 5, 7 & 2 & 3 8, 9 & 12, 8, 9 & 12, 10 & 11 10 & 11 27C128 Open 2 & 5, 7 & 2 & 5, 7 & 2 & 3 8, 9 & 12, 8, 9 & 12, 10 & 11 10 & 11 27C256 Open 9 & 12, 14 9 & 12, 14 2 & 3 & 15 & 15 27C512 Open 9 & 12, 10 9 & 12, 10 2 & 3 & 11, 14 & & 11, 14 & 15 15 27C010 Open 9 & 12, 10 9 & 12, 10 2 & 3 & 11 & 11 27C020 Open 2 & 5, 7 & 2 & 5, 7 & 2 & 3 8, 9 & 12, 8, 9 & 12, 10 & 11 10 & 11 27C040 Open 2 & 5, 4 & 2 & 5, 4 & 2 & 3 7, 9 & 12, 7, 9 & 12, 10 & 11, 13 10 & 11, 13 & 14 & 14 27C080 Open 4 & 7, 5 & 4 & 7, 5 & 2 & 3 6, 9 & 12, 6, 9 & 12, 10 & 11, 13 10 & 11, 13 & 14 & 14 28C64 Open 2 & 5, 7 & 2 & 5, 7 & 2 & 3 8, 9 & 12, 8, 9 & 12, 10 & 11 10 & 11 Note: Pins designated should be in the closed position. W14 controls S0 & W15 controls S1. BIOS SELECTION IN S0 & S1 (FLASH BIOS) Type W2 W14 W15 W21 29C256 Open 8 & 11, 9 & 8 & 11, 9 & 2 & 3 12, 14 & 15 12, 14 & 15 28C256 Open 8 & 9, 11 & 8 & 9, 11 & 2 & 3 12, 14 & 15 12, 14 & 15 29F512 Open 4 & 5, 7 & 8, 4 & 5, 7 & 8, 2 & 3 9 & 12, 10 & 9 & 12, 10 & 11, 13 & 14 11, 13 & 14 29F010 Open 4 & 5, 7 & 8, 4 & 5, 7 & 8, 2 & 3 9 & 12, 10 & 9 & 12, 10 & 11, 13 & 14 11, 13 & 14 29F020 Open 4 & 5, 7 & 8, 4 & 5, 7 & 8, 2 & 3 9 & 12, 10 & 9 & 12, 10 & 11, 13 & 14 11, 13 & 14 29F040 Open 4 & 5, 7 & 8, 4 & 5, 7 & 8, 2 & 3 9 & 12, 10 & 9 & 12, 10 & 11, 13 & 14 11, 13 & 14 28F512 Open 2 & 5, 7 & 8, 2 & 5, 7 & 8, 2 & 3 9 & 12, 10 & 9 & 12, 10 & 11, 13 & 14 11, 13 & 14 28F010 Open 2 & 5, 7 & 8, 2 & 5, 7 & 8, 2 & 3 9 & 12, 10 & 9 & 12, 10 & 11, 13 & 14 11, 13 & 14 28F020 Open 2 & 5, 7 & 8, 2 & 5, 7 & 8, 2 & 3 9 & 12, 10 & 9 & 12, 10 & 11, 13 & 14 11, 13 & 14 Note: Pins designated should be in the closed position. W14 controls S0 & W15 controls S1. BIOS SELECTION IN S0 & S1 (SRAM & NOVRAM) Type W2 W14 W15 W21 BQ4013Y Open 7 & 10, 8 & 7 & 10, 8 & 2 & 3 9, 11 & 12, 9, 11 & 12, 14 & 15 14 & 15 BQ4015Y Open 4 & 5, 7 & 4 & 5, 7 & 2 & 3 10, 8 & 9, 10, 8 & 9, 11 & 12, 13 11 & 12, 13 & 14 & 14 42356 Open 7 & 10, 8 & 7 & 10, 8 & 2 & 3 9, 11 & 12, 9, 11 & 12, 14 & 15 14 & 15 DS1235Y Open 7 & 10, 8 & 7 & 10, 8 & 2 & 3 9, 11 & 12, 9, 11 & 12, 14 & 15 14 & 15 DS1650Y Open 4 & 5, 7 & 4 & 5, 7 & 2 & 3 10, 8 & 9, 10, 8 & 9, 11 & 12, 13 11 & 12, 13 & 14 & 14 628128 Open 7 & 10, 8 & 7 & 10, 8 & 2 & 3 9, 11 & 12, 9, 11 & 12, 14 & 15 14 & 15 628512 Open 4 & 5, 7 & 4 & 5, 7 & 2 & 3 10, 8 & 9, 10, 8 & 9, 11 & 12, 13 11 & 12, 13 & 14 & 14 Note: Pins designated should be in the closed position. W14 controls S0 & W15 controls S1.