ITT CORPORATION XTRA/PROFESSIONAL SERIES 400 Processor 80286 Processor Speed 6/10MHz Chip Set Unidentified Max. Onboard DRAM 1MB (exact location unidentified) Cache None BIOS Unidentified Dimensions 355mm x 305mm I/O Options Floppy drive interface NPU Options 80287 [Image] CONNECTIONS Purpose Location Floppy drive interface CN1 USER CONFIGURABLE SETTINGS Function Jumper Position » Factory configured - do not JP6 pins 2 & 3 alter closed » Floppy drive interface enabled JP7 pins 1 & 2 closed Floppy drive interface disabled JP7 pins 2 & 3 closed » Floppy drive address select 37X JP8 pins 1 & 2 closed Floppy drive address select 3FX JP8 pins 2 & 3 closed » Hard drive controller installed JP9 pins 1 & 2 closed Hard drive controller not JP9 pins 2 & 3 installed closed » Power on wait state select 1 JP10 pins 1 & 2 wait states closed Power on wait state select 0 JP10 pins 2 & 3 wait state closed DRAM CONFIGURATION Size 256KB 512KB 640KB 1MB Note:The chip size and location of the memory is unidentified. DRAM JUMPER CONFIGURATION Size JP4 JP5 256KB pins 2 & 3 closed pins 1 & 2 closed 512KB pins 1 & 2 closed pins 1 & 2 closed 640KB pins 2 & 3 closed pins 2 & 3 closed 1MB pins 1 & 2 closed pins 2 & 3 closed CPU POWER UP SPEED CONFIGURATION Speed JP3 6MHz pins 2 & 3 closed 10MHz pins 1 & 2 closed BIOS CONFIGURATION Type JP1 JP2 EPROM pins 1 & 2 closed pins 1 & 2 closed Masked ROM pins 2 & 3 closed pins 2 & 3 closed