INTEL CORPORATION ================= CLASSIC E EXPANDABLE DESKTOP Processor 80486SX/ODP486/80487SX/80486DX/80486DX2 Processor Speed 16/20/25/33/50(internal)/66(internal)MHz Chip Set OPTI Video Chip Set None Maximum Onboard 64MB Memory Maximum Video None Memory Cache 64/128/256KB BIOS Phoenix Dimensions 426mm x 416mm I/O Options 32-bit VESA local bus slot, floppy drive interface, IDE interface, parallel port, serial ports (2) NPU Options None +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Function | Label | Function | Label | |--------------------+-------+-----------------------+-------| | Chassis fan power | CN1 | Serial port 2 | J18 | |--------------------+-------+-----------------------+-------| | External battery | CN2 | Parallel port | J19 | |--------------------+-------+-----------------------+-------| | Floppy drive | J13 | Front panel connector | J25 | | interface | | | | |--------------------+-------+-----------------------+-------| | IDE interface | J14 | 32-bit VESA local bus | SL1 | | | | slot | | |--------------------+-------+-----------------------+-------| | Serial port 1 | J16 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Setting | Label | Position | |------------------------------------+----------+------------| |>> | Flash BIOS normal boot | J3 | Pins 2 & 3 | | | | | closed | |---+--------------------------------+----------+------------| | | Flash BIOS recovery mode boot | J3 | Pins 1 & 2 | | | | | closed | |---+--------------------------------+----------+------------| |>> | On board I/O enabled | J4 | Pins 1 & 2 | | | | | closed | |---+--------------------------------+----------+------------| | | On board I/O disabled | J4 | Pins 2 & 3 | | | | | closed | |---+--------------------------------+----------+------------| |>> | Password normal operation | J7 | Pins 2 & 3 | | | | | closed | |---+--------------------------------+----------+------------| | | Password clear | J7 | Pins 1 & 2 | | | | | closed | |---+--------------------------------+----------+------------| |>> | Parallel port direction select | J9 | Pins 1 & 2 | | | output | | closed | |---+--------------------------------+----------+------------| | | Parallel port direction select | J9 | Pins 2 & 3 | | | input | | closed | |---+--------------------------------+----------+------------| |>> | Parallel port direction select | J11 | Pins 2 & 3 | | | hardware for redirection | | closed | |---+--------------------------------+----------+------------| | | Parallel port direction select | J11 | Pins 1 & 2 | | | software hardware for | | closed | | | redirection | | | |---+--------------------------------+----------+------------| |>> | Battery type select 3.6v/4.5v | J17 | Pins 2 & 3 | | | | | closed | |---+--------------------------------+----------+------------| | | Battery type select 6v | J17 | Pins 1 & 2 | | | | | closed | |---+--------------------------------+----------+------------| |>> | CMOS memory normal operation | J25 pins | Closed | | | | 17 & 18 | | |---+--------------------------------+----------+------------| | | CMOS memory clear | J25 pins | Open | | | | 17 & 18 | | |---+--------------------------------+----------+------------| |>> | Fan enabled | J29 | Pins 2 & 3 | | | | | closed | |---+--------------------------------+----------+------------| | | Fan disabled | J29 | Pins 1 & 2 | | | | | closed | |---+--------------------------------+----------+------------| |>> | 12v flash BIOS enabled | J30 | Pins 1 & 2 | | | | | closed | |---+--------------------------------+----------+------------| | | 12v flash BIOS disabled | J30 | Pins 2 & 3 | | | | | closed | |---+--------------------------------+----------+------------| |>> | Local bus ready select delayed | J31 | Pins 1 & 2 | | | | | closed | |---+--------------------------------+----------+------------| | | Local bus ready select normal | J31 | Pins 2 & 3 | | | operation | | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |------+-------------+-------------+------------+------------| | 1MB | (1) 256K x | None | None | None | | | 36 | | | | |------+-------------+-------------+------------+------------| | 2MB | (1) 256K x | (1) 256K x | None | None | | | 36 | 36 | | | |------+-------------+-------------+------------+------------| | 3MB | (1) 256K x | (1) 256K x | (1) 256K x | None | | | 36 | 36 | 36 | | |------+-------------+-------------+------------+------------| | 4MB | (1) 1M x 36 | None | None | None | |------+-------------+-------------+------------+------------| | 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 | | | |------+-------------+-------------+------------+------------| | 5MB | (1) 256K x | (1) 1M x 36 | 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) 1M x 36 | (1) 1M x 36 | None | None | |------+-------------+-------------+------------+------------| | 9MB | (1) 256K x | (1) 1M x 36 | (1) 1M x | None | | | 36 | | 36 | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CON'T) | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |------+-------------+-------------+------------+------------| | 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | None | | | | | 36 | | |------+-------------+-------------+------------+------------| | 13MB | (1) 256K x | (1) 1M x 36 | (1) 1M x | (1) 1M x | | | 36 | | 36 | 36 | |------+-------------+-------------+------------+------------| | 16MB | (1) 4M x 36 | None | None | None | |------+-------------+-------------+------------+------------| | 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 17MB | (1) 4M x 36 | (1) 256K x | None | None | | | | 36 | | | |------+-------------+-------------+------------+------------| | 17MB | (1) 256K x | (1) 4M x 36 | None | None | | | 36 | | | | |------+-------------+-------------+------------+------------| | 18MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | None | | | | 36 | 36 | | |------+-------------+-------------+------------+------------| | 19MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | (1) 256K x | | | | 36 | 36 | 36 | |------+-------------+-------------+------------+------------| | 20MB | (1) 4M x 36 | (1) 1M x 36 | None | None | |------+-------------+-------------+------------+------------| | 20MB | (1) 1M x 36 | (1) 4M x 36 | None | None | |------+-------------+-------------+------------+------------| | 24MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | None | | | | | 36 | | |------+-------------+-------------+------------+------------| | 28MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 32MB | (1) 4M x 36 | (1) 4M x 36 | None | None | |------+-------------+-------------+------------+------------| | 33MB | (1) 256K x | (1) 4M x 36 | (1) 4M x | None | | | 36 | | 36 | | |------+-------------+-------------+------------+------------| | 36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | None | | | | | 36 | | |------+-------------+-------------+------------+------------| | 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | None | | | | | 36 | | |------+-------------+-------------+------------+------------| | 49MB | (1) 256K x | (1) 4M x 36 | (1) 4M x | (1) 4M x | | | 36 | | 36 | 36 | |------+-------------+-------------+------------+------------| | 52MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------------------------------------------------------------| | Note: The orientation of the banks is unidentified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |-----------------+---------------------+--------------------| | 64KB | (4) 8K x 8 | (4) 8K x 8 | |-----------------+---------------------+--------------------| | 128KB | (4) 32K x 8 | None | |-----------------+---------------------+--------------------| | 256KB | (4) 32K x 8 | (4) 32K x 8 | |------------------------------------------------------------| | Note: The chip sizes of the TAG and DIRTY bit are | | unidentified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | J34 | |--------------------------+---------------------------------| | None | Open | |--------------------------+---------------------------------| | 64KB | Open | |--------------------------+---------------------------------| | 128KB | Pins 1 & 2, 5 & 6 closed | |--------------------------+---------------------------------| | 256KB | Pins 1 & 2, 3 & 4, 7 & 8 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED SELECTION | |------------------------------------------------------------| | Speed | J5 | J6 | |------------------+--------------------+--------------------| | 16MHz | Pins 1 & 2 closed | Pins 1 & 2 closed | |------------------+--------------------+--------------------| | 20MHz | Pins 2 & 3 closed | Pins 1 & 2 closed | |------------------+--------------------+--------------------| | 25MHz | Pins 1 & 2 closed | Pins 2 & 3 closed | |------------------+--------------------+--------------------| | 33MHz | Pins 2 & 3 closed | Pins 2 & 3 closed | |------------------+--------------------+--------------------| | 50iMHz | Pins 1 & 2 closed | Pins 2 & 3 closed | |------------------+--------------------+--------------------| | 66iMHz | Pins 2 & 3 closed | Pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE SELECTION | |------------------------------------------------------------| | Type | J32 | J33 | |----------+------------------------+------------------------| | 80486SX | Pins 3 & 4 closed | Pins 4 & 6 closed | |----------+------------------------+------------------------| | 80487SX | Pins 1 & 2, 5 & 6 | Pins 1 & 3, 2 & 4 | | | closed | closed | |----------+------------------------+------------------------| | ODP486 | Pins 1 & 2, 5 & 6 | Pins 1 & 3, 2 & 4 | | | closed | closed | |----------+------------------------+------------------------| | 80486DX | Pins 1 & 2, 5 & 6 | Pins 3 & 5, 4 & 6 | | | closed | closed | |----------+------------------------+------------------------| | 80486DX2 | Pins 1 & 2, 5 & 6 | Pins 3 & 5, 4 & 6 | | | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | MISCELLANEOUS TECHNICAL NOTE | |------------------------------------------------------------| | The location of pin 1 on all jumpers is unidentified. | +------------------------------------------------------------+