HAUPPAUGE COMPUTER WORKS, INC. 4860 MOTHERBOARD Processor 80486DX/i860 Processor Speed 25/33MHz Chip Set Intel Max. onboard DRAM 32MB Cache None BIOS Unidentified Dimensions 330mm x 218mm I/O Options Parallel port, serial ports (2) NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Reset switch J9 Speaker J19 Turbo LED/switch J11 Keylock & power LED J20 Serial port 1 J13 External battery J21 Serial port 2 J14 PS/2 mouse interface J23 Parallel port J15 USER CONFIGURABLE SETTINGS Function Jumper Position » I860 interrupt select 61.7911msec JP1 Pins 2 & 3 closed I860 timer interrupt select JP1 Pins 1 & 2 30.8955msec closed » Turbocache not installed JP2 Closed Turbocache installed JP2 Open » IRQ12 disabled JP3 Pins 1 & 2 closed IRQ12 enabled JP3 Pins 2 & 3 closed » Serial port 1 address COM1 select JP4 Pins 1 & 2 closed Serial port 1 address COM3 select JP4 Pins 2 & 3 closed » IRQ4 enabled JP5 Closed IRQ4 disabled JP5 Open » Serial port 2 address COM2 select JP6 Pins 1 & 2 closed Serial port 2 address COM4 select JP6 Pins 2 & 3 closed » IRQ3 enabled JP7 Closed IRQ3 disabled JP7 Open » Parallel port address LPT2 select JP8 Pins 2 & 3 closed Parallel port address LPT1 select JP8 Pins 1 & 2 closed » IRQ7 enabled JP9 Closed IRQ7 disabled JP9 Open » Factory configured-do not alter JP12 Closed » Factory configured-do not alter JP13 Pins 2 & 3 closed » 25MHz CPU speed select JP14 Closed 33MHZ CPU speed select JP14 Open » Write-protected caching by 486 & JP15 Open Turbocache Write protected caching by JP15 Closed Turbocache only » Factory configured-do not alter JP17 Open » 64-bit slot write select CPUWR# JP18 Pins 2 & 3 closed 64-bit slot write select BCPUWR# JP18 Pins 1 & 2 closed » Monitor type select monochrome SW1 Open Monitor type select color SW1 Pins 2 & 3 closed Burn-in test enable SW1 Pins 1 & 2 closed MOUSE/KEYBOARD BIOS CONFIGURATION Setting JP11A JP11B JP11C JP11D JP11E XT keyboard Open Open Closed Closed Closed Mouse, AT Closed Closed Open Open Open keyboard No mouse Open Open Closed Closed Closed installed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 4MB (2) 512K x (2) 512K x (2) 512K x (2) 512K x 36 36 36 36 4MB (2) 1MB x 36 (2) 1MB x 36 NONE NONE 4MB (2) 2MB x 36 NONE NONE NONE 6MB (2) 1MB x 36 (2) 1MB x 36 (2) 1MB x 36 NONE 8MB (2) 1MB x 36 (2) 1MB x 36 (2) 1MB x 36 (2) 1MB x 36 8MB (2) 2MB x 36 (2) 2MB x 36 NONE NONE 8MB (2) 4MB x 36 NONE NONE NONE 12MB (2) 2MB x 36 (2) 2MB x 36 (2) 2MB x 36 NONE 16MB (2) 4MB x 36 (2) 4MB x 36 NONE NONE 16MB (2) 2MB x 36 (2) 2MB x 36 (2) 2MB x 36 (2) 2MB x 36 16MB (2) 8M x 36 NONE NONE NONE 32MB (2) 8M x 36 (2) 8M x 36 NONE NONE