ACER, INC. ========== V55LA Device Type Mainboard Processor Pentium/CX 6X86/AM K5 Processor Speed 75/90/100/120/133/150/166/200MHz Chip Set Unidentified Video Chip Set Unidentified Maximum Onboard 128MB (EDO & SDRAM supported) Memory Maximum Video 2MB Memory Cache 256/512KB BIOS Unidentified Dimensions 254mm x 218mm I/O Options Bus mouse port, Ethernet 10BaseT connector, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA port, riser slot, IR connector, line in, wavetable connector, audio in - CD-ROM +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |----------------------+-----------+-------------+-----------| | Multimedia/ethernet | CN1 | Turbo LED | CN19/pins | | connector | | | 12 & 13 | |----------------------+-----------+-------------+-----------| | Audio in - CD-ROM | CN2 | Turbo | CN19/pins | | | | | 15 - 17 | |----------------------+-----------+-------------+-----------| | LAN connector | CN5 | Reset | CN19/pins | | | | | 19 & 20 | |----------------------+-----------+-------------+-----------| | Wavetable | CN6 | Video port | CN21 | |----------------------+-----------+-------------+-----------| | PS/2 mouse port | CN8 | Fax/modem | CN22 | | | | connector | | |----------------------+-----------+-------------+-----------| | Audio I/O board | CN9 | Reset | CN30 | | connector | | switch | | | | | connector | | |----------------------+-----------+-------------+-----------| | Floppy drive | CN10 | Line in | CN31 | | interface | | | | |----------------------+-----------+-------------+-----------| | IDE interface 2 | CN11 | Power LED & | JP9 | | | | hard disk | | |----------------------+-----------+-------------+-----------| | IDE interface 1 | CN12 | Disk LED | JP10 | |----------------------+-----------+-------------+-----------| | Serial port 1 | CN13 | SMM switch | JP11/pins | | | | | 1 & 2 | |----------------------+-----------+-------------+-----------| | Serial port 2 | CN14 | Reset | JP11/pins | | | | switch | 2 & 3 | |----------------------+-----------+-------------+-----------| | Parallel port | CN17 | Additional | JP11/pins | | | | reset | 3 & 4 | | | | switch | | |----------------------+-----------+-------------+-----------| | CPU fan connector | CN18 | Power | JP14 | | | | switch | | | | | connector | | |----------------------+-----------+-------------+-----------| | Power LED & keylock | CN19/pins | Standby | JP15 | | | 1 - 5 | power | | | | | connector | | |----------------------+-----------+-------------+-----------| | Speaker | CN19/pins | External | JP30 | | | 7 - 10 | battery | | | | | connector | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Label | Position | |--------------------------------+-------+-------------------| | | BIOS type select Acer | JP1 | Pins 1 & 2 closed | |---+----------------------------+-------+-------------------| | | BIOS type select OEM | JP1 | Pins 2 & 3 closed | |---+----------------------------+-------+-------------------| | | LED for IDE/FDD | JP2 | Pins 1 & 2 closed | |---+----------------------------+-------+-------------------| | | LED for IDE only | JP2 | Pins 2 & 3 closed | |---+----------------------------+-------+-------------------| | | Allow boot block | JP5 | Pins 1 & 2 closed | | | programming | | | |---+----------------------------+-------+-------------------| | | Normal flash BIOS | JP5 | Pins 2 & 3 closed | | | operation | | | |---+----------------------------+-------+-------------------| | | Regulator 1 voltage | JP7 | Closed | |---+----------------------------+-------+-------------------| | | Regulator 2 voltages | JP7 | Open | |---+----------------------------+-------+-------------------| | | UPS enabled | JP16 | Pins 1 & 2 closed | |---+----------------------------+-------+-------------------| | | UPS disabled | JP16 | Pins 2 & 3 closed | |---+----------------------------+-------+-------------------| |>> | Factory configured - do | JP19 | Reserved | | | not alter | | | |---+----------------------------+-------+-------------------| | | Intel or CX 6X86 "1+4" | JP42 | Pins 1 & 2 closed | | | mode | | | |---+----------------------------+-------+-------------------| | | CX 6X86 linear burst mode | JP42 | Pins 2 & 3 closed | |---+----------------------------+-------+-------------------| | | Onboard sound chip | SW1/5 | On | | | disabled | | | |---+----------------------------+-------+-------------------| | | Onboard sound chip enabled | SW1/5 | Off | |---+----------------------------+-------+-------------------| | | Password bypass | SW1/6 | On | |---+----------------------------+-------+-------------------| | | Password check | SW1/6 | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | SIMM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |-----------------+-------------------+----------------------| | 8MB | (2) 1M x 36 | None | |-----------------+-------------------+----------------------| | 16MB | (2) 2M x 36 | None | |-----------------+-------------------+----------------------| | 16MB | (2) 1M x 36 | (2) 1M x 36 | |-----------------+-------------------+----------------------| | 24MB | (2) 2M x 36 | (2) 1M x 36 | |-----------------+-------------------+----------------------| | 32MB | (2) 4M x 36 | None | |-----------------+-------------------+----------------------| | 32MB | (2) 2M x 36 | (2) 2M x 36 | |-----------------+-------------------+----------------------| | 40MB | (2) 4M x 36 | (2) 1M x 36 | |-----------------+-------------------+----------------------| | 48MB | (2) 4M x 36 | (2) 2M x 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | SIMM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |-----------------+-------------------+----------------------| | 64MB | (2) 8M x 36 | None | |-----------------+-------------------+----------------------| | 64MB | (2) 4M x 36 | (2) 4M x 36 | |-----------------+-------------------+----------------------| | 72MB | (2) 8M x 36 | (2) 1M x 36 | |-----------------+-------------------+----------------------| | 80MB | (2) 8M x 36 | (2) 2M x 36 | |-----------------+-------------------+----------------------| | 96MB | (2) 8M x 36 | (2) 4M x 36 | |-----------------+-------------------+----------------------| | 128MB | (2) 8M x 36 | (2) 8M x 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Tag SRAM | Bank 0 | Bank 1 | |------------+---------------+----------------+--------------| | 256KB | (2) 32K x 32 | (2) 32K x 32 | None | |------------+---------------+----------------+--------------| | 512KB | (2) 32K x 32 | (2) 32K x 32 | (2) 32K x 32 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP3 | JP4 | |-----------------+---------------------+--------------------| | 256KB | Pins 1 & 2 closed | Pins 1 & 2 closed | |-----------------+---------------------+--------------------| | 512KB | Pins 1 & 2 closed | Pins 2 & 3 closed | |-----------------+---------------------+--------------------| | 1 MB | Pins 2 & 3 closed | Pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VIDEO MEMORY CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | |-----------------+---------------------+--------------------| | 1MB | (2) 256K x 16 | None | |-----------------+---------------------+--------------------| | 2MB | (2) 256K x 16 | (2) 256K x 16 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED SELECTION | |------------------------------------------------------------| | CPU speed | Clock speed | SW1/1 | SW1/2 | |----------------+---------------+-------------+-------------| | 75MHz | 50MHz | On | On | |----------------+---------------+-------------+-------------| | 90MHz | 60MHz | On | Off | |----------------+---------------+-------------+-------------| | 100MHz | 66MHz | Off | On | |----------------+---------------+-------------+-------------| | 120MHz | 60MHz | On | Off | |----------------+---------------+-------------+-------------| | 133MHz | 66MHz | Off | On | |----------------+---------------+-------------+-------------| | 150MHz | 60MHz | On | Off | |----------------+---------------+-------------+-------------| | 166MHz | 66MHz | Off | On | |----------------+---------------+-------------+-------------| | 200MHz | 66MHz | Off | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU FREQUENCY RATIO SELECTION (INTEL) | |------------------------------------------------------------| | Ratio | SW1/3 | SW1/4 | |-------------------+--------------------+-------------------| | 1.5x | Off | On | |-------------------+--------------------+-------------------| | 1.5x | Off | Off | |-------------------+--------------------+-------------------| | 2x | On | Off | |-------------------+--------------------+-------------------| | 2.5x | On | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU FREQUENCY RATIO SELECTION (CX 6X86) | |------------------------------------------------------------| | Ratio | SW1/3 | SW1/4 | |--------------------+-------------------+-------------------| | 4x | Off | On | |--------------------+-------------------+-------------------| | 3x | Off | Off | |--------------------+-------------------+-------------------| | 2x | On | Off | |--------------------+-------------------+-------------------| | 1x | On | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU FREQUENCY RATIO SELECTION (AM K5) | |------------------------------------------------------------| | K5 | SW1/3 | SW1/4 | |--------------------+-------------------+-------------------| | 1.5x | Off | Off | |--------------------+-------------------+-------------------| | 2x | On | On | +------------------------------------------------------------+ +------------------------------------------------------------+ | BIOS ROM TYPE SELECTION | |------------------------------------------------------------| | Type | JP6 | |------------------------------+-----------------------------| | Flash ROM | Pins 1 & 2 closed | |------------------------------+-----------------------------| | EPROM | Pins 2 & 3 closed | |------------------------------+-----------------------------| | Block flash EEPROM | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU I/O VOLTAGE SELECTION | |------------------------------------------------------------| | Voltage | JP43 | |------------------------------+-----------------------------| | 3.5v | Pins 1 & 2 closed | |------------------------------+-----------------------------| | 3.3v | Pins 2 & 3 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU CORE VOLTAGE SELECTION | |------------------------------------------------------------| | Voltage | JP44 | |------------------------------+-----------------------------| | 2.5v | Pins 1 & 2 closed | |------------------------------+-----------------------------| | 2.8v | Pins 2 & 3 closed | +------------------------------------------------------------+