DELL COMPUTER CORPORATION ========================= System 4XXDE Processor 80486SX/80487SX/80486DX Processor Speed 20/25/33/50MHz Chip Set VLSI Max. Onboard 48MB (96MB on revision 1.1 or higher) DRAM Cache None (128KB on 450DE and 433DE) BIOS AMI Dimensions 329mm x 334mm I/O Options 32-bit external CPU card slot, bus mouse, floppy drive interface, IDE interface, status LCD, parallel port, serial ports (2), VGA port NPU Options None (4167 on 433DE) +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |-----------------+----------+--------------------+----------| | VGA port | CN1 | External battery | JBAT | |-----------------+----------+--------------------+----------| | Parallel port | CN2 | Cooling fan | JFAN | |-----------------+----------+--------------------+----------| | Serial port 2 | CN3 | VGA pass-through | JFEAT | |-----------------+----------+--------------------+----------| | Serial port 1 | CN4 | Primary floppy | JFLOP | | | | drive interface | | |-----------------+----------+--------------------+----------| | Bus mouse port | CN5 | IDE interface | JIDE | |-----------------+----------+--------------------+----------| | Board ground | GND | Front panel status | JVIEW | | points | | LCD | | |-----------------+----------+--------------------+----------| | IDE interface | JLED | Reset switch | RSET | | LED | | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper/Switch | Position | |---------------------------------+---------------+----------| |>> | Boot EEPROM write/clear | BOOT | Closed | | | enabled | | | |---+-----------------------------+---------------+----------| | | Boot EEPROM write/clear | BOOT | Open | | | disabled | | | |---+-----------------------------+---------------+----------| |>> | Factory test disabled | MNT | Open | |---+-----------------------------+---------------+----------| | | Factory test enabled | MNT | Closed | |---+-----------------------------+---------------+----------| |>> | VGA interface enabled | SW1/1 | Off | |---+-----------------------------+---------------+----------| | | VGA interface disabled | SW1/1 | On | |---+-----------------------------+---------------+----------| |>> | Monitor type select fixed | SW1/2 | Off | | | frequency | | | |---+-----------------------------+---------------+----------| | | Monitor type select multi | SW1/2 | On | | | frequency | | | |---+-----------------------------+---------------+----------| |>> | Password check enabled | SW1/3 | On | |---+-----------------------------+---------------+----------| | | Password check disabled | SW1/3 | Off | |---+-----------------------------+---------------+----------| |>> | BIOS chip select flash | SW1/4 | Off | | | EEPROM | | | |---+-----------------------------+---------------+----------| | | BIOS chip select auxiliary | SW1/4 | On | | | ROM | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| |Size| Bank 0 | Bank 1 | Bank 2 | Bank 3 |Bank 4 |Bank 5 | |----+-----------+---------+--------+--------+-------+-------| |4MB | (1)512K x |(1)512K x| NONE | NONE | NONE | NONE | | | 36 | 36 | | | | | |----+-----------+---------+--------+--------+-------+-------| |6MB | (1)512K x |(1)512K x|(1)256K |(1)256K | NONE | NONE | | | 36 | 36 | x 36 | x 36 | | | |----+-----------+---------+--------+--------+-------+-------| |6MB | (1)256K x |(1)256K x|(1)256K |(1)256K |(1)256K|(1)256K| | | 36 | 36 | x 36 | x 36 | x 36 | x 36 | |----+-----------+---------+--------+--------+-------+-------| |8MB | (1)512K x |(1)512K x|(1)256K |(1)256K |(1)256K|(1)256K| | | 36 | 36 | x 36 | x 36 | x 36 | x 36 | |----+-----------+---------+--------+--------+-------+-------| |8MB | (1)512K x |(1)512K x|(1)512K |(1)512K | NONE | NONE | | | 36 | 36 | x 36 | x 36 | | | |----+-----------+---------+--------+--------+-------+-------| |8MB |(1) 1M x 36|(1) 1M x | NONE | NONE | NONE | NONE | | | | 36 | | | | | |----+-----------+---------+--------+--------+-------+-------| |10MB| (1)512K x |(1)512K x|(1)512K |(1)512K |(1)256K|(1)256K| | | 36 | 36 | x 36 | x 36 | x 36 | x 36 | |----+-----------+---------+--------+--------+-------+-------| |10MB|(1) 1M x 36|(1) 1M x |(1)256K |(1)256K | NONE | NONE | | | | 36 | x 36 | x 36 | | | |----+-----------+---------+--------+--------+-------+-------| |12MB|(1) 1M x 36|(1) 1M x |(1)256K |(1)256K |(1)256K|(1)256K| | | | 36 | x 36 | x 36 | x 36 | x 36 | |----+-----------+---------+--------+--------+-------+-------| |12MB|(1) 1M x 36|(1) 1M x |(1)512K |(1)512K | NONE | NONE | | | | 36 | x 36 | x 36 | | | |----+-----------+---------+--------+--------+-------+-------| |12MB| (1)512K x |(1)512K x|(1)512K |(1)512K |(1)512K|(1)512K| | | 36 | 36 | x 36 | x 36 | x 36 | x 36 | |----+-----------+---------+--------+--------+-------+-------| |14MB|(1) 1M x 36|(1) 1M x |(1)512K |(1)512K |(1)256K|(1)256K| | | | 36 | x 36 | x 36 | x 36 | x 36 | |----+-----------+---------+--------+--------+-------+-------| |16MB|(1) 1M x 36|(1) 1M x |(1)512K |(1)512K |(1)512K|(1)512K| | | | 36 | x 36 | x 36 | x 36 | x 36 | |----+-----------+---------+--------+--------+-------+-------| |16MB|(1) 1M x 36|(1) 1M x |(1) 1M x|(1) 1M x| NONE | NONE | | | | 36 | 36 | 36 | | | |----+-----------+---------+--------+--------+-------+-------| |16MB|(1) 2M x 36|(1) 2M x | NONE | NONE | NONE | NONE | | | | 36 | | | | | |----+-----------+---------+--------+--------+-------+-------| |18MB|(1) 1M x 36|(1) 1M x |(1) 1M x|(1) 1M x|(1)256K|(1)256K| | | | 36 | 36 | 36 | x 36 | x 36 | |----+-----------+---------+--------+--------+-------+-------| |18MB|(1) 2M x 36|(1) 2M x |(1)256K |(1)256K | NONE | NONE | | | | 36 | x 36 | x 36 | | | |----+-----------+---------+--------+--------+-------+-------| |20MB|(1) 2M x 36|(1) 2M x |(1)256K |(1)256K |(1)256K|(1)256K| | | | 36 | x 36 | x 36 | x 36 | x 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CON'T) | |------------------------------------------------------------| | Size | Bank | Bank | Bank 2 | Bank 3 | Bank 4 | Bank 5 | | | 0 | 1 | | | | | |------+------+------+---------+---------+---------+---------| | 20MB | (1) | (1) | (1) 1M | (1) 1M | (1)512K | (1)512K | | | 1M x | 1M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 20MB | (1) | (1) | (1)512K | (1)512K | NONE | NONE | | | 2M x | 2M x | x 36 | x 36 | | | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 22MB | (1) | (1) | (1)512K | (1)512K | (1)256K | (1)256K | | | 2M x | 2M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 24MB | (1) | (1) | (1) 1M | (1) 1M | NONE | NONE | | | 2M x | 2M x | x 36 | x 36 | | | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 24MB | (1) | (1) | (1)512K | (1)512K | (1)512K | (1)512K | | | 2M x | 2M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 26MB | (1) | (1) | (1) 1M | (1) 1M | (1)256K | (1)256K | | | 2M x | 2M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 28MB | (1) | (1) | (1) 1M | (1) 1M | (1)512K | (1)512K | | | 2M x | 2M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 32MB | (1) | (1) | (1) 2M | (1) 2M | NONE | NONE | | | 2M x | 2M x | x 36 | x 36 | | | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 32MB | (1) | (1) | (1) 1M | (1) 1M | (1) 1M | (1) 1M | | | 2M x | 2M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 32MB | (1) | (1) | NONE | NONE | NONE | NONE | | | 4M x | 4M x | | | | | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 34MB | (1) | (1) | (1) 2M | (1) 2M | (1)256K | (1)256K | | | 2M x | 2M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 34MB | (1) | (1) | (1)256K | (1)256K | NONE | NONE | | | 4M x | 4M x | x 36 | x 36 | | | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 36MB | (1) | (1) | (1) 2M | (1) 2M | (1)512K | (1)512K | | | 2M x | 2M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 38MB | (1) | (1) | (1)512K | (1)512K | (1)256K | (1)256K | | | 4M x | 4M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 40MB | (1) | (1) | (1) 2M | (1) 2M | (1) 1M | (1) 1M | | | 2M x | 2M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 40MB | (1) | (1) | (1) 1M | (1) 1M | NONE | NONE | | | 4M x | 4M x | x 36 | x 36 | | | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 42MB | (1) | (1) | (1) 1M | (1) 1M | (1)256K | (1)256K | | | 4M x | 4M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 48MB | (1) | (1) | (1) 2M | (1) 2M | (1) 2M | (1) 2M | | | 2M x | 2M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 48MB | (1) | (1) | (1) 2M | (1) 2M | NONE | NONE | | | 4M x | 4M x | x 36 | x 36 | | | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 50MB | (1) | (1) | (1) 2M | (1) 2M | (1)256K | (1)256K | | | 4M x | 4M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 52MB | (1) | (1) | (1) 2M | (1) 2M | (1)512K | (1)512K | | | 4M x | 4M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 56MB | (1) | (1) | (1) 2M | (1) 2M | (1) 1M | (1) 1M | | | 4M x | 4M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 64MB | (1) | (1) | (1) 2M | (1) 2M | (1) 2M | (1) 2M | | | 4M x | 4M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 64MB | (1) | (1) | (1) 4M | (1) 4M | NONE | NONE | | | 4M x | 4M x | x 36 | x 36 | | | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 66MB | (1) | (1) | (1) 4M | (1) 4M | (1)256K | (1)256K | | | 4M x | 4M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 68MB | (1) | (1) | (1) 4M | (1) 4M | (1)512K | (1)512K | | | 4M x | 4M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 72MB | (1) | (1) | (1) 4M | (1) 4M | (1) 1M | (1) 1M | | | 4M x | 4M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 80MB | (1) | (1) | (1) 4M | (1) 4M | (1) 2M | (1) 2M | | | 4M x | 4M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | |------+------+------+---------+---------+---------+---------| | 96MB | (1) | (1) | (1) 4M | (1) 4M | (1) 4M | (1) 4M | | | 4M x | 4M x | x 36 | x 36 | x 36 | x 36 | | | 36 | 36 | | | | | +------------------------------------------------------------+