COMPAQ COMPUTER CORPORATION =========================== DESKPRO 386 (TYPE 'B') Processor 80386DX Processor Speed 16MHz Chip Set ETEQ Max. Onboard 2MB (on system memory card) DRAM 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 +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |----------------+----------+---------------------+----------| | Fixed drive | J109 | Proprietary | J116 | | power | | keyboard plug | | |----------------+----------+---------------------+----------| | Tape backup | J110 | Main power | J117 | | power | | | | |----------------+----------+---------------------+----------| | Floppy drive | J111 | External battery | J118 | | power | | | | |----------------+----------+---------------------+----------| | Floppy drive | J112 | Keylock | J119 | | power | | | | |----------------+----------+---------------------+----------| | 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. | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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 | Exp. | 1MBExt. | J1 | | | Memory | Memory | 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. | +------------------------------------------------------------+