CHEERFUL INTERNATIONAL CORPORATION ================================== S680 Processor 80386SX Processor Speed 16MHz Chip Set Intel Max. Onboard DRAM 2MB Cache None BIOS AMI Dimensions 330.2mm x 218.4mm I/O Options None NPU Options 80387SX +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |----------------+----------+---------------------+----------| | Reset switch | CN1 | Speaker | CN4 | |----------------+----------+---------------------+----------| | Turbo switch | CN2 | Power LED & keylock | CN7 | |----------------+----------+---------------------+----------| | Turbo LED | CN3 | External battery | CN8 | |------------------------------------------------------------| | Note:CN2 can be connected to a turbo switch, however the | | manufacturer recommends that the computer be turned off | | before changing the CPU speed. | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |--------------------------------------+--------+------------| |>> | CPU speed select fast | CN2 | closed | |---+----------------------------------+--------+------------| | | CPU speed select slow | CN2 | open | |---+----------------------------------+--------+------------| |>> | Battery select internal | CN9 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| | | Battery select external | CN9 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Monitor type select monochrome | JP2 | open | |---+----------------------------------+--------+------------| | | Monitor type select color | JP2 | closed | |---+----------------------------------+--------+------------| |>> | BIOS type select 2764 | JP4 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | BIOS type select 27128 | JP4 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP10 | unknown | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP11 | unknown | | | alter | | | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP12 | unknown | | | alter | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | E1 - E8 | |-------+---------+---------+---------+---------+------------| | 512KB | (18) | NONE | NONE | NONE | pins 1 & 2 | | | 41256 | | | | closed | |-------+---------+---------+---------+---------+------------| | 512KB | NONE | NONE | (2) | NONE | pins 2 & 3 | | | | | 256K x | | closed | | | | | 9 | | | |-------+---------+---------+---------+---------+------------| | 1MB | (18) | (18) | NONE | NONE | pins 1 & 2 | | | 41256 | 41256 | | | closed | |-------+---------+---------+---------+---------+------------| | 1MB | NONE | NONE | (2) | (2) | pins 2 & 3 | | | | | 256K x | 256K x | closed | | | | | 9 | 9 | | |-------+---------+---------+---------+---------+------------| | 1.5MB | (18) | (18) | (2) | NONE | pins 1 & 2 | | | 41256 | 41256 | 256K x | | closed | | | | | 9 | | | |-------+---------+---------+---------+---------+------------| | 2MB | (18) | (18) | (2) | (2) | pins 1 & 2 | | | 41256 | 41256 | 256K x | 256K x | closed | | | | | 9 | 9 | | |-------+---------+---------+---------+---------+------------| | 2MB | (18) | NONE | NONE | NONE | pins 1 & 2 | | | 411000 | | | | closed | |-------+---------+---------+---------+---------+------------| | 2MB | NONE | NONE | (2) 1M | NONE | pins 2 & 3 | | | | | x 9 | | closed | |-------+---------+---------+---------+---------+------------| | 4MB | (18) | (18) | NONE | NONE | pins 1 & 2 | | | 411000 | 411000 | | | closed | |-------+---------+---------+---------+---------+------------| | 4MB | NONE | NONE | (2) 1M | (2) 1M | pins 2 & 3 | | | | | x 9 | x 9 | closed | |-------+---------+---------+---------+---------+------------| | 6MB | (18) | (18) | (2) 1M | NONE | pins 1 & 2 | | | 411000 | 411000 | x 9 | | closed | |-------+---------+---------+---------+---------+------------| | 8MB | (18) | (18) | (2) 1M | (2) 1M | pins 1 & 2 | | | 411000 | 411000 | x 9 | x 9 | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM MODE CONFIGURATION | |------------------------------------------------------------| | Mode | DRAM type | JP8 | JP9 | |----------------------+-----------+------------+------------| | Page Mode (Four | 100ns | pins 1 & 2 | pins 1 & 2 | | page) | | closed | closed | |----------------------+-----------+------------+------------| | Page Mode (One page) | 100ns | pins 2 & 3 | pins 1 & 2 | | | | closed | closed | |----------------------+-----------+------------+------------| | Fast mode | 100ns | pins 1 & 2 | pins 2 & 3 | | | | closed | closed | |----------------------+-----------+------------+------------| | Slow mode | 120ns | pins 2 & 3 | pins 2 & 3 | | | | closed | closed | +------------------------------------------------------------+