PACKARD BELL ============ PB450, LEGEND-CD 486SX Processor 80486SX/SL80486SX/80486DX/SL80486DX/80486DX2/SL80486DX2/80486DX4/P24T Processor 25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz Speed Chip Set OPTI Video Chip Cirrus Logic Set Maximum 64MB Onboard Memory Maximum 2MB Video Memory Cache 128/512KB BIOS Unidentified Dimensions 254mm x 218mm I/O Floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse Options port, serial ports (2), VESA feature connector, VGA port, riser slot NPU None Options +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |-------------------+----------+------------------+----------| | PS/2 mouse port | J2 | IDE interface 1 | J24 | |-------------------+----------+------------------+----------| | VGA port | J3 | External battery | J30 | |-------------------+----------+------------------+----------| | Parallel port | J5 | Front panel | J34 | | | | connector | | |-------------------+----------+------------------+----------| | Serial port 1 | J6 | Power LED & | J35 | | | | keylock | | |-------------------+----------+------------------+----------| | VESA feature | J14 | Speaker | J36 | | connector | | | | |-------------------+----------+------------------+----------| | Floppy drive | J21 | Chassis fan | J38 | | interface | | power | | |-------------------+----------+------------------+----------| | Serial port | J22 | Riser slot | SL1 | | 2/modem connector | | | | |-------------------+----------+------------------+----------| | IDE interface 2 | J23 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Label | Position | |-------------------------------------+-------+--------------| |>> | Monitor type select color | J8 | Closed | |---+---------------------------------+-------+--------------| | | Monitor type select monochrome | J8 | Open | |---+---------------------------------+-------+--------------| |>> | Video IRQ9 disabled | J9 | Open | |---+---------------------------------+-------+--------------| | | Video IRQ9 enabled | J9 | Closed | |---+---------------------------------+-------+--------------| |>> | Factory configured - do not | J10 | Unidentified | | | alter | | | |---+---------------------------------+-------+--------------| |>> | Factory configured - do not | J11 | Unidentified | | | alter | | | |---+---------------------------------+-------+--------------| |>> | Flash BIOS normal operation | J17 | Pins 2 & 3 | | | | | closed | |---+---------------------------------+-------+--------------| | | Flash BIOS boot block enabled | J17 | Pins 1 & 2 | | | | | closed | |---+---------------------------------+-------+--------------| |>> | DRAM parity disabled | J18 | Pins 2 & 3 | | | | | closed | |---+---------------------------------+-------+--------------| | | DRAM parity enabled | J18 | Pins 1 & 2 | | | | | closed | |---+---------------------------------+-------+--------------| |>> | On board video enabled | J19 | Pins 2 & 3 | | | | | closed | |---+---------------------------------+-------+--------------| | | On board video disabled | J19 | Pins 1 & 2 | | | | | closed | |---+---------------------------------+-------+--------------| |>> | On board I/O enabled | J20 | Pins 2 & 3 | | | | | closed | |---+---------------------------------+-------+--------------| | | On board I/O disabled | J20 | Pins 1 & 2 | | | | | closed | |---+---------------------------------+-------+--------------| | | Battery type select internal | J30 | Pins 3 & 4 | | | | | closed | |---+---------------------------------+-------+--------------| | | Battery type select external | J30 | Closed | |---+---------------------------------+-------+--------------| |>> | LDEV# bypass enabled | J33 | Closed | |---+---------------------------------+-------+--------------| | | LDEV# bypass disabled (PCI card | J33 | Open | | | present) | | | |---+---------------------------------+-------+--------------| | | Speaker type select internal | J36 | Pins 3 & 4 | | | | | closed | |---+---------------------------------+-------+--------------| | | Speaker type select external | J36 | Closed | |---+---------------------------------+-------+--------------| |>> | On board memory enabled | J37 | Open | |---+---------------------------------+-------+--------------| | | On board memory disabled | J37 | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |-------------+--------------+---------------+---------------| | 4MB | 4MB | None | None | |-------------+--------------+---------------+---------------| | 5MB | 4MB | (1) 256K x 36 | None | |-------------+--------------+---------------+---------------| | 6MB | 4MB | (1) 256K x 36 | (1) 256K x 36 | |-------------+--------------+---------------+---------------| | 6MB | 4MB | (1) 512K x 36 | None | |-------------+--------------+---------------+---------------| | 8MB | 4MB | (1) 512K x 36 | (1) 512K x 36 | |-------------+--------------+---------------+---------------| | 8MB | 4MB | (1) 1M x 36 | None | |-------------+--------------+---------------+---------------| | 12MB | 4MB | (1) 1M x 36 | (1) 1M x 36 | |-------------+--------------+---------------+---------------| | 12MB | 4MB | (1) 2M x 36 | None | |-------------+--------------+---------------+---------------| | 16MB | 4MB | (1) 2M x 36 | (1) 1M x 36 | |-------------+--------------+---------------+---------------| | 20MB | 4MB | (1) 2M x 36 | (1) 2M x 36 | |-------------+--------------+---------------+---------------| | 20MB | 4MB | (1) 4M x 36 | None | |-------------+--------------+---------------+---------------| | 24MB | 4MB | (1) 4M x 36 | (1) 1M x 36 | |-------------+--------------+---------------+---------------| | 24MB | 4MB | (1) 1M x 36 | (1) 4M x 36 | |-------------+--------------+---------------+---------------| | 28MB | 4MB | (1) 2M x 36 | (1) 4M x 36 | |-------------+--------------+---------------+---------------| | 36MB | 4MB | (1) 4M x 36 | (1) 4M x 36 | |-------------+--------------+---------------+---------------| | 36MB | 4MB | (1) 8M x 36 | None | |-------------+--------------+---------------+---------------| | 40MB | 4MB | (1) 8M x 36 | (1) 1M x 36 | |-------------+--------------+---------------+---------------| | 52MB | 4MB | (1) 8M x 36 | (1) 4M x 36 | |-------------+--------------+---------------+---------------| | 64MB | 4MB | (1) 8M x 36 | (1) 8M x 36 | |------------------------------------------------------------| | Note: If 64MB is installed, J37 must be closed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | TAG0 | TAG1 | |------------+---------------+---------------+---------------| | 128KB | (4) 32K x 8 | (1) 32K x 8 | (1) 64K x 1 | |------------+---------------+---------------+---------------| | 512KB | (4) 128K x 8 | (1) 32K x 8 | (1) 64K x 1 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | J26 | |----------------------------+-------------------------------| | 128KB | Open | |----------------------------+-------------------------------| | 512KB | Pins 1 & 2, 3 & 4 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VIDEO MEMORY CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | |----------------------------+-------------------------------| | 2MB | (2) 256K x 16 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED SELECTION | |------------------------------------------------------------| | Speed | J25 | |----------------------------+-------------------------------| | 25MHz | Pins 1 & 2 closed | |----------------------------+-------------------------------| | 33MHz | Pins 2 & 3 closed | |----------------------------+-------------------------------| | 50iMHz | Pins 1 & 2 closed | |----------------------------+-------------------------------| | 66iMHz | Pins 2 & 3 closed | |----------------------------+-------------------------------| | 75iMHz | Pins 1 & 2 closed | |----------------------------+-------------------------------| | 100iMHz | Pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE SELECTION | |------------------------------------------------------------| | Type | J28 | J31 | |-------------+-------------------+--------------------------| | 80486SX | Pins 2 & 3 closed | Pins 5 & 6 closed | |-------------+-------------------+--------------------------| | SL80486SX | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 closed | |-------------+-------------------+--------------------------| | 80486DX | Pins 2 & 3 closed | Pins 1 & 2, 3 & 4 closed | |-------------+-------------------+--------------------------| | SL80486DX | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 closed | |-------------+-------------------+--------------------------| | 80486DX2 | Pins 2 & 3 closed | Pins 1 & 2, 3 & 4 closed | |-------------+-------------------+--------------------------| | SL80486DX2 | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 closed | |-------------+-------------------+--------------------------| | 80486DX4 | Pins 2 & 3 closed | Pins 1 & 2, 3 & 4 closed | |-------------+-------------------+--------------------------| | P24T | Pins 1 & 2 closed | Pins 1 & 2, 3 & 4 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU MULTIPLIER SELECTION (80486DX4 ONLY) | |------------------------------------------------------------| | Multiplier | J29 | |----------------------------+-------------------------------| | 2x | Pins 2 & 3 closed | |----------------------------+-------------------------------| | 3x | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE SELECTION | |------------------------------------------------------------| | Voltage | J32 | |----------------------------+-------------------------------| | 3.3v | Pins 1 & 3, 2 & 4 closed | |----------------------------+-------------------------------| | 5v | Pins 3 & 5, 4 & 5 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DMA CHANNEL SELECTION | |------------------------------------------------------------| | Channel | J15 | J16 | |------------------+--------------------+--------------------| |>> | 1 | Pins 1 & 2 closed | Pins 1 & 2 closed | |----+-------------+--------------------+--------------------| | | 3 | Pins 2 & 3 closed | Pins 2 & 3 closed | +------------------------------------------------------------+