COMMODORE BUSINESS MACHINES, INC. 286 System (Part #368987-01 Rev B) Processor 80286 Processor Speed 8/10MHz Chip Set Unidentified Max. Onboard DRAM 16MB Cache None BIOS Commodore Dimensions 254mm x 218mm I/O Options 16-bit riser card slot, bus mouse port, floppy interface, game port, IDE interface, parallel port, serial ports (2) NPU Options 80287 [Image] CONNECTIONS Purpose Location Purpose Location 16-bit riser card CN1 Drive power DPWR Serial port 1 CN2 Floppy drive interface FDD Serial port 2 CN3 Game port GAM Parallel port CN4 IDE drive interface IDE Bus mouse port CN5 USER CONFIGURABLE SETTINGS Function Jumper Position » Battery type select internal J10 pins 2 & 3 closed Battery type select external J10 pins 1 & 2 closed » Monitor type select monochrome J12 Closed Monitor type select color J12 Open » IDE interface enabled J14 pins 1 & 2 closed IDE interface disabled J14 pins 2 & 3 closed » Floppy drive interface enabled J15 pins 1 & 2 closed Floppy drive interface disabled J15 pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 512KB (4) 44256 NONE NONE NONE 1MB (4) 44256 (4) 44256 NONE NONE 1.5MB (4) 44256 (4) 44256 (2) 256K x NONE 9 2MB (4) 44256 (4) 44256 (2) 256K x (2) 256K x 9 9 2MB (4) 441000 NONE NONE NONE 3MB (4) 44256 (4) 44256 (2) 1M x 9 NONE 4MB NONE NONE (2) 1M x 9 (2) 1M x 9 4MB (4) 441000 (4) 441000 NONE NONE 5MB (4) 44256 (4) 44256 (2) 1M x 9 (2) 1M x 9 8MB (4) 444000 NONE NONE NONE 16MB (4) 444000 (4) 444000 NONE NONE 16MB NONE NONE (2) 4M x 9 (2) 4M x 9 DRAM JUMPER CONFIGURATION Size J6 J7 512KB pins 2 & 3 closed pins 2 & 3 closed 1MB pins 2 & 3 closed pins 2 & 3 closed 1.5MB pins 2 & 3 closed pins 2 & 3 closed 2MB pins 2 & 3 closed pins 2 & 3 closed 2MB pins 2 & 3 closed pins 2 & 3 closed 3MB pins 2 & 3 closed pins 2 & 3 closed 4MB pins 1 & 2 closed pins 1 & 2 closed 4MB pins 2 & 3 closed pins 2 & 3 closed 5MB pins 2 & 3 closed pins 2 & 3 closed 8MB pins 2 & 3 closed pins 2 & 3 closed 16MB pins 2 & 3 closed pins 2 & 3 closed 16MB pins 1 & 2 closed pins 1 & 2 closed SERIAL PORT CONFIGURATION CN1 CN2 J16 J17 J18 COM1 COM2 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed COM1 Disabled pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed Disabled COM1 pins 2 & 3 pins 1 & 2 pins 2 & 3 closed closed closed COM2 COM1 pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed COM2 Disabled pins 2 & 3 pins 2 & 3 pins 1 & 2 closed closed closed Disabled COM2 pins 1 & 2 pins 1 & 2 pins 2 & 3 closed closed closed Disabled Disabled N/A pins 2 & 3 pins 2 & 3 closed closed PARALLEL PORT CONFIGURATION LPT J19 J20 J21 LPT1 pins 1 & 2 pins 2 & 3 pins 1 & 2 closed closed closed LPT2 pins 1 & 2 pins 1 & 2 pins 1 & 2 closed closed closed LPT3 pins 2 & 3 pins 1 & 2 pins 1 & 2 closed closed closed Disabled pins 2 & 3 pins 2 & 3 pins 2 & 3 closed closed closed . [Image] VIDEO BOARD CONFIGURATION Function Jumper Position » VGA board enabled J1 Closed VGA board disabled (VESA enabled) J1 Open » VGA 1024 x 768 mode disabled J2 Open VGA 1024 x 768 mode enabled J2 Closed » Monitor type select color J3 Open Monitor type select monochrome J3 Closed