DIGITAL EQUIPMENT CORPORATION DECPC 400MT Processor 80486DX/80486DX2 Processor Speed 33/50(internal)/66(internal)MHz Chip Set Unidentified Video Chip Set Unidentified Maximum Onboard 64MB Memory Maximum Video Memory 1MB Cache None BIOS Unidentified Dimensions 254mm x 218mm I/O Options CPU slot, parallel port, PS/2 mouse port, serial ports (2), VGA port NPU Options None [Image] CONNECTIONS Purpose Location Purpose Location Parallel port CN1 PS/2 mouse port CN5 VGA port CN2 External battery JP1 Serial port 2 CN3 CPU slot SL1 Serial port 1 CN4 USER CONFIGURABLE SETTINGS Function Label Position » VGA IRQ9 disabled J13 Open VGA IRQ9 enabled J13 Closed » On board video enabled J14 Closed On board video disabled J14 Open » Local enabled J23 Pins 1 & 2 closed Local & ISA enabled J23 Pins 2 & 3 closed » Parallel port unidirectional J25 Pins 1 & 2 closed Parallel port bidirectional J25 Pins 2 & 3 closed » Reset switch enabled J27 Pins 1 & 2 closed Reset switch disabled J27 Pins 2 & 3 closed » Factory configured - do not J28 Unidentified alter Monitor type select color J29 Closed Monitor type select monochrome J29 Open » CMOS memory normal operation J31 Pins 1 & 2 closed CMOS memory clear J31 Pins 2 & 3 closed DRAM CONFIGURATION Size Bank 0 Bank 1 Bank 2 Bank 3 4MB (1) 1M x 36 None None None 8MB (1) 1M x 36 (1) 1M x 36 None None 12MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 None 16MB (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 (1) 1M x 36 16MB (1) 4M x 36 None None None 20MB (1) 1M x 36 (1) 4M x 36 None None 24MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 None 32MB (1) 4M x 36 (1) 4M x 36 None None 40MB (1) 1M x 36 (1) 1M x 36 (1) 4M x 36 (1) 4M x 36 48MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 None 64MB (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 (1) 4M x 36 Note: The location of banks 0, 1, 2 & 3 are unidentified. VIDEO MEMORY CONFIGURATION Size Bank 0 Bank 1 512KB 512KB None 1MB 512KB 512KB Note: The location of banks 0 & 1 are unidentified. VIDEO MEMORY JUMPER CONFIGURATION Size J22 512KB Pins 1 & 2 closed 1MB Pins 2 & 3 closed