COMPAQ COMPUTER CORPORATION DESKPRO 386 (TYPE 'B') Processor 80386DX Processor Speed 16MHz Chip Set ETEQ Max. Onboard DRAM 2MB (on system memory card) Cache None BIOS Compaq Dimensions 330mm x 218mm I/O Options Proprietary system memory card slot, proprietary external memory card slot (on system memory card) NPU Options 80287/80387 [Image] CONNECTIONS Purpose Location Purpose Location Fixed drive power J109 Proprietary keyboard J116 plug Tape backup power J110 Main power J117 Floppy drive power J111 External battery J118 Floppy drive power J112 Keylock J119 Monitor power J113 Proprietary system S1 memory card Speaker J115 USER CONFIGURABLE SETTINGS Function Switch Position » Fail-safe timer enabled SW1/1 On Fail-safe timer disabled SW1/1 Off » NPU enabled SW1/2 On NPU disabled SW1/2 Off » 80287 type select 4MHz SW1/3 On 80287 type select 8MHz SW1/3 Off » CPU speed at boot automatic SW1/4 On » CPU speed at boot high SW1/4 Off » Factory configured - do not alter SW1/5 Off » Monitor type select SW1/6 On dual-mode/color Monitor type select monochrome SW1/6 Off other than Compaq » NPU type select 80287 SW1/7 On NPU type select 80387 SW1/7 Off » Factory configured - do not alter SW1/8 On Note:SW1/3 has no effect if SW1/7 is configured for an 80387 NPU. [Image] CONNECTIONS Purpose Location Proprietary external memory card S1 & S2 DRAM CONFIGURATION Size Bank 0 Bank 1 1MB (36) 41256 NONE 2MB (36) 41256 (36) 41256 DRAM JUMPER CONFIGURATION Size Base Memory Exp. Memory 1MBExt. J1 Memory 1MB 256KB 768KB disabled pins 1 & 2, 4 & 5, 7 & 8 closed 1MB 512KB 512KB disabled pins 2 & 3, 4 & 5, 7 & 8 closed 1MB 640KB 384KB disabled pins 2 & 3, 5 & 6, 7 & 8 closed 2MB 256KB 768KB enabled pins 1 & 2, 4 & 5, 8 & 9 closed 2MB 512KB 512KB enabled pins 2 & 3, 4 & 5, 8 & 9 closed 2MB 640KB 384KB enabled pins 2 & 3, 5 & 6, 8 & 9 closed Note:Jumpers 3 & 4 and 6 & 7 should never be closed as serious damage to the system may result.