IBM CORPORATION APTIVA 2144 Processor 80486SX/80486SX2/80487SX/80486DX/80486DX2/P24T Processor Speed 25/33/50(internal)/66(internal)MHz Chip Set Unidentified Video Chip Set Unidentified Maximum Onboard 64MB Memory Maximum Video Unidentified Memory Cache 128/256KB BIOS Unidentified Dimensions 254mm x 218mm I/O Options Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VESA feature connector, VGA port, riser slot, NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location VGA port CN1 Floppy drive interface CN8 Parallel port CN2 IDE interface LED J26 Serial port CN3 Speaker J27 Serial port CN4 Auxiliary power J29 connector PS/2 mouse port CN5 Auxiliary power J30 connector VESA feature connector CN6 Chassis fan power J38 IDE interface CN7 Riser slot SL1 USER CONFIGURABLE SETTINGS Function Label Position On board video enabled J15 Pins 1 & 2 closed On board video disabled J15 Pins 2 & 3 closed Parity enabled J50 Pins 1 & 2 closed Parity disabled J50 Pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 1MB (1) 256K x None None None 36 2MB (1) 512K x None None None 36 4MB (1) 1M x 36 None None None 4MB (1) 512K x (1) 512K x None None 36 36 4MB (1) 256K x (1) 256K x (1) 256K x (1) 256K x 36 36 36 36 5MB (1) 1M x 36 (1) 256K x None None 36 6MB (1) 1M x 36 (1) 256K x (1) 256K x None 36 36 7MB (1) 1M x 36 (1) 256K x (1) 256K x (1) 256K x 36 36 36 8MB (1) 2M x 36 None None None 8MB (1) 1M x 36 (1) 1M x 36 None None 10MB (1) 2M x 36 (1) 256K x (1) 256K x None 36 36 12MB (1) 2M x 36 (1) 1M x 36 None None 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 None 14MB (1) 2M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 16MB (1) 4M x 36 None None None 16MB (1) 2M x 36 (1) 2M x 36 None None 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 17MB (1) 4M x 36 (1) 256K x None None 36 18MB (1) 4M x 36 (1) 256K x (1) 256K x None 36 36 20MB (1) 4M x 36 (1) 1M x 36 None None 22MB (1) 4M x 36 (1) 512K x (1) 512K x (1) 512K x 36 36 36 24MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 None 28MB (1) 4M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 32MB (1) 8M x 36 None None None 32MB (1) 4M x 36 (1) 4M x 36 None None DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 32MB (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 (1) 2M x 36 34MB (1) 8M x 36 (1) 512K x None None 36 36MB (1) 8M x 36 (1) 1M x 36 None None 40MB (1) 2M x 36 (1) 8M x 36 None None 44MB (1) 8M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 48MB (1) 8M x 36 (1) 2M x 36 (1) 2M x 36 None 64MB (1) 8M x 36 (1) 8M x 36 None None 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 CACHE CONFIGURATION Size Bank 0 Bank 1 TAG 128KB (4) 32K x 8 None (1) 8K x 8 256KB (4) 32K x 8 (4) 32K x 8 (1) 32K x 8 CACHE JUMPER CONFIGURATION Size J12 J13 J16 J17 J51 128KB 2 & 3 1 & 2 2 & 3 1 & 2 1 & 2 256KB 1 & 2 2 & 3 1 & 2 2 & 3 2 & 3 Note: Pins designated should be in the closed position. VIDEO MEMORY CONFIGURATION Note: The size of the video memory chip is unidentified. CPU SPEED SELECTION Speed J37 25MHz Closed 33MHz Open 50iMHz Closed 66iMHz Open CPU TYPE SELECTION Processor Processor J24 J25 J31 installed upgrade 80486SX 80486SX2 Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 closed closed closed 80486SX 80487SX Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 closed closed closed 80486SX 80486DX Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 closed closed closed 80486SX 80486DX2 Pins 1 & 2 Pins 2 & 3 Pins 1 & 2 closed closed closed 80486SX P24T Pins 2 & 3 Pins 2 & 3 Pins 1 & 2 closed closed closed 80486SX2 P24T Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed 80486DX 80486SX2 Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed 80486DX 80486DX2 Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed 80486DX P24T Pins 1 & 2 Pins 1 & 2 Pins 2 & 3 closed closed closed 80486DX2 P24T Pins 2 & 3 Pins 1 & 2 Pins 2 & 3 closed closed closed