AST RESEARCH, INC. ================== PREMIUM/486-25 Processor 80486DX Processor Speed 25MHz Chip Set AST Max. Onboard None (36MB total on 32-bit external cards) DRAM Cache None BIOS AST Dimensions 355mm x 251mm I/O Options Parallel port, serial ports (2), floppy drive interface, IDE interface, 32-bit external CPU/NPU card slot, 32-bit external memory card slots (2), 16-bit external expansion card slot NPU Options 4167 +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | 32-bit external | CN1 | Auxiliary floppy | P4 | | CPU/NPU card | | drive interface | | |------------------+----------+-------------------+----------| | 32-bit external | CN2 | Power LED & reset | P5 | | memory card | | switch | | |------------------+----------+-------------------+----------| | 32-bit external | CN3 | Speaker | P6 | | memory card | | | | |------------------+----------+-------------------+----------| | 16-bit external | CN4 | External battery | P8 | | expansion card | | | | |------------------+----------+-------------------+----------| | Primary floppy | P3 | IDE interface | P11 | | drive interface | | | | |------------------------------------------------------------| | Note:Expansion card slots CN1 through CN4 will accept | | standard 8 or 16-bit ISA cards. | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |--------------------------------------+--------+------------| |>> | Password check enabled | E1 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | Password check disabled | E1 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | E2 | Open | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | E3 | Open | | | alter | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |----------------------------------+-----------+-------------| |>> | Parity check enabled | E1 | Closed | |---+------------------------------+-----------+-------------| | | Parity check disabled | E1 | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |------------------+--------------------+--------------------| | 2MB | (2) 256K x 36 | NONE | |------------------+--------------------+--------------------| | 4MB | (2) 256K x 36 | (2) 256K x 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | SW1 | Position | |-----------------------------------------+-------+----------| |>> | Parity check enabled | SW1/1 | On | |---+-------------------------------------+-------+----------| | | Parity check disabled | SW1/1 | Off | |---+-------------------------------------+-------+----------| |>> | Total system memory is less than | SW1/2 | Off | | | 16MB | | | |---+-------------------------------------+-------+----------| | | Total system memory is 16MB or more | SW1/2 | On | |---+-------------------------------------+-------+----------| |>> | Factory configured - do not alter | SW1/3 | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM SWITCH CONFIGURATION | |------------------------------------------------------------| | Total | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 | | memory | | | | | | |-------------+---------+---------+--------+--------+--------| | | 1MB | On | On | On | On | Off | |----+--------+---------+---------+--------+--------+--------| | | 2MB | On | On | On | Off | On | |----+--------+---------+---------+--------+--------+--------| | | 3MB | On | On | On | Off | Off | |----+--------+---------+---------+--------+--------+--------| |>> | 4MB | On | On | Off | On | On | |----+--------+---------+---------+--------+--------+--------| | | 5MB | On | On | Off | On | Off | |----+--------+---------+---------+--------+--------+--------| | | 6MB | On | On | Off | Off | On | |----+--------+---------+---------+--------+--------+--------| | | 7MB | On | On | Off | Off | Off | |----+--------+---------+---------+--------+--------+--------| | | 8MB | On | Off | On | On | On | |----+--------+---------+---------+--------+--------+--------| | | 9MB | On | Off | On | On | Off | |----+--------+---------+---------+--------+--------+--------| | | 10MB | On | Off | On | Off | On | |----+--------+---------+---------+--------+--------+--------| | | 11MB | On | Off | On | Off | Off | |----+--------+---------+---------+--------+--------+--------| | | 12MB | On | Off | Off | On | On | |----+--------+---------+---------+--------+--------+--------| | | 13MB | On | Off | Off | On | Off | |----+--------+---------+---------+--------+--------+--------| | | 14MB | On | Off | Off | Off | On | |----+--------+---------+---------+--------+--------+--------| | | 15MB | On | Off | Off | Off | Off | |----+--------+---------+---------+--------+--------+--------| | | 16MB | Off | On | On | On | On | |----+--------+---------+---------+--------+--------+--------| | | 17MB | Off | On | On | On | Off | |----+--------+---------+---------+--------+--------+--------| | | 18MB | Off | On | On | Off | On | |----+--------+---------+---------+--------+--------+--------| | | 19MB | Off | On | On | Off | Off | |----+--------+---------+---------+--------+--------+--------| | | 20MB | Off | On | Off | On | On | |------------------------------------------------------------| | Note:Set the switches to the total amount of system memory | | installed not including this card. | | | | A setting of more than 4MB means that this card is the | | second memory card that is installed. | +------------------------------------------------------------+ +----------------------------------------------------------------------------------------------------------------------+ | DRAM CONFIGURATION | |----------------------------------------------------------------------------------------------------------------------| | Size | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 0MB | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 1MB |Filled| None | None | None | None | None | None | None | None | None | None | None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 2MB |Filled|Filled| None | None | None | None | None | None | None | None | None | None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 3MB |Filled|Filled|Filled| None | None | None | None | None | None | None | None | None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 4MB |Filled|Filled|Filled|Filled| None | None | None | None | None | None | None | None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 5MB |Filled|Filled|Filled|Filled|Filled| None | None | None | None | None | None | None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 6MB |Filled|Filled|Filled|Filled|Filled|Filled| None | None | None | None | None | None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 7MB |Filled|Filled|Filled|Filled|Filled|Filled|Filled| None | None | None | None | None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| |Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled| None | None | None | None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 9MB |Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled| None | None | None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 10MB |Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled| None | None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 11MB |Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled| None | None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 12MB |Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled| None | None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 13MB |Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled| None | None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 14MB |Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled| None | None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 15MB |Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled| None | |------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------+------| | 16MB |Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled|Filled| |----------------------------------------------------------------------------------------------------------------------| |Note:Banks (0 through 15) are filled using (1) 256K x 36 SIMMs. This table is for a single card only. | +----------------------------------------------------------------------------------------------------------------------+