ASUS COMPUTER INTERNATIONAL =========================== VL/I-486SV2G, VL/I-486SV2GX4 (REV. 1.1) Processor 80486SX/SL80486SX/80487SX/CX486S/CX486DX/80486DX/SL80486DX/ SLODP486/ODP486SX/CX486DX2/80486DX2/80486DX4/Pentium Overdrive Processor 20/25/33/40/50(internal)/50/66(internal)/75(internal)/82.5(internal)/ Speed 99(internal)/100(internal)MHz Chip Set SIS Max. 64MB Onboard DRAM Cache 128/256/512/1024KB BIOS Award Dimensions 220mm x 220mm I/O 32-bit VESA local bus slots (2), PS/2 mouse port, green PC Options NPU None Options +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | External battery | BCON1 | Green PC 1 | JP2 | |------------------+----------+-------------------+----------| | Turbo switch | CN1 | Green PC 2 | JP3 | |------------------+----------+-------------------+----------| | Turbo LED | CN2 | Green PC 3 | JP4 | |------------------+----------+-------------------+----------| | Reset switch | CN3 | Suspend power | JP28 | | | | management | | |------------------+----------+-------------------+----------| | Speaker | CN4 | 32-bit VESA local | S1 | | | | bus slot | | |------------------+----------+-------------------+----------| | Power LED & | CN5 | 32-bit VESA local | S2 | | keylock | | bus slot | | |------------------+----------+-------------------+----------| | PS/2 mouse | CN6 | | | | connector | | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |--------------------------------------+--------+------------| |>> | Battery type select (Internal) | JP1 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | Battery type select (External) | JP1 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | IRQ12 enabled | JP7 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | IRQ12 disabled | JP7 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| |>> | Factory configured - do not | JP8 | N/A | | | alter | | | |---+----------------------------------+--------+------------| |>> | Monitor type select CGA | JP9 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| | | Monitor type select monochrome | JP9 | pins 1 & 2 | | | or VGA | | closed | |---+----------------------------------+--------+------------| |>> | Hardware SMI switch enabled | JP10 | pins 2 & 3 | | | | | closed | |---+----------------------------------+--------+------------| | | RC control enabled | JP10 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| |>> | CPU manufacturer select type | JP11 | pins 2 & 3 | | | Intel | | closed | |---+----------------------------------+--------+------------| | | CPU manufacturer select type | JP11 | pins 1 & 2 | | | Cyrix | | closed | |---+----------------------------------+--------+------------| |>> | Delay VESA clock | JP24 | pins 1 & 2 | | | | | closed | |---+----------------------------------+--------+------------| | | No Delay VESA clock | JP24 | pins 2 & 3 | | | | | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |------+-------------+-------------+------------+------------| | 1MB | (1) 1M x 36 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 2MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE | |------+-------------+-------------+------------+------------| | 2MB | (1) 2M x 36 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 4MB | (1) 4M x 36 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 5MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 6MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 6MB | (1) 2M x 36 | NONE | (1) 4M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 8MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE | |------+-------------+-------------+------------+------------| | 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 8M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 10MB | (1) 2M x 36 | NONE | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 10MB | (1) 2M x 36 | NONE | (1) 8M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 12MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 12MB | (1) 8M x 36 | NONE | (1) 4M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 16MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 16MB | (1) 4M x 36 | (1) 4M x 36 | (1) 8M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 16MB | (1) 8M x 36 | NONE | (1) 8M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 16MB | (1) 8M x 36 | NONE | (1) 4M x | (1) 4M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 16MB | (1) 16M x | NONE | NONE | NONE | | | 36 | | | | |------+-------------+-------------+------------+------------| | 17MB | (1) 1M x 36 | (1) 16M x | NONE | NONE | | | | 36 | | | |------+-------------+-------------+------------+------------| | 18MB | (1) 1M x 36 | (1) 1M x 36 | (1) 16M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 18MB | (1) 2M x 36 | NONE | (1) 16M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 20MB | (1) 4M x 36 | (1) 16M x | NONE | NONE | | | | 36 | | | |------+-------------+-------------+------------+------------| | 24MB | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 24MB | (1) 8M x 36 | NONE | (1) 16M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 32MB | (1) 16M x | (1) 16M x | NONE | NONE | | | 36 | 36 | | | |------+-------------+-------------+------------+------------| | 32MB | (1) 32M x | NONE | NONE | NONE | | | 36 | | | | |------+-------------+-------------+------------+------------| | 36MB | (1) 4M x 36 | (1) 16M x | (1) 16M x | NONE | | | | 36 | 36 | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CONT.) | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |------+-------------+-------------+------------+------------| | 40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x | (1) 16M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 32M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 40MB | (1) 8M x 36 | NONE | (1) 16M x | (1) 16M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 40MB | (1) 8M x 36 | NONE | (1) 32M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 40MB | (1) 16M x | (1) 16M x | (1) 16M x | NONE | | | 36 | 36 | 36 | | |------+-------------+-------------+------------+------------| | 64MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x | | | 36 | 36 | 36 | 36 | |------+-------------+-------------+------------+------------| | 64MB | (1) 16M x | (1) 16M x | (1) 32M x | NONE | | | 36 | 36 | 36 | | |------+-------------+-------------+------------+------------| | 64MB | (1) 32M x | NONE | (1) 32M x | NONE | | | 36 | | 36 | | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | TAG | |--------+---------------------+--------------+--------------| | 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | |--------+---------------------+--------------+--------------| | 256KB | (4) 32K x 8/(4) 64K | (4) 32K x | (1) 32K x 8 | | | x 8 | 8/NONE | | |--------+---------------------+--------------+--------------| | 512KB | (4) 64K x 8/(4) | (4) 64K x | (1) 32K x 8 | | | 128K x 8 | 8/NONE | | |--------+---------------------+--------------+--------------| | 1024KB | (4) 128K x 8 | (4) 128K x 8 | (1) 128K x 8 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP13 | JP14 | JP25 | |---------------+------------------+------------+------------| | 128KB | Open | pins 2 & 3 | pins 1 & 2 | | | | closed | closed | |---------------+------------------+------------+------------| | 256KB (32K x | Open | pins 1 & 2 | pins 1 & 2 | | 8) | | closed | closed | |---------------+------------------+------------+------------| | 256KB (64K x | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | | 8) | closed | closed | closed | |---------------+------------------+------------+------------| | 512KB (64K x | pins 5 & 6 | pins 1 & 2 | pins 2 & 3 | | 8) | closed | closed | closed | |---------------+------------------+------------+------------| | 512KB (128K x | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 | | 8) | closed | closed | closed | |---------------+------------------+------------+------------| | 1024KB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | | | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | Type | JP16 | JP17 | JP18 | JP19 | JP20 | |-----------+----------+--------+---------+---------+--------| | 80486SX | Open | Open | Open | pins 2 | pins 2 | | | | | | & 3 | & 3 | |-----------+----------+--------+---------+---------+--------| | SL486SX | 3 & 4 | Open | pins 4 | pins 2 | pins 2 | | | and 5 & | | & 5 | & 3 | & 3 | | | 6 | | | | | |-----------+----------+--------+---------+---------+--------| | 80487SX | Open | Open | Open | pins 1 | pins 2 | | | | | | & 2 | & 3 | |-----------+----------+--------+---------+---------+--------| | CX486S | 2 & 3 | pins 1 | 1 & 2 | pins 2 | pins 2 | | | and 4 & | & 2 | and 3 & | & 3 | & 3 | | | 5 | | 4 | | | |-----------+----------+--------+---------+---------+--------| | CX486DX | 2 & 3 | pins 1 | 1 & 2 | pins 1 | pins 2 | | | and 4 & | & 2 | and 3 & | & 2 | & 3 | | | 5 | | 4 | | | |-----------+----------+--------+---------+---------+--------| | 80486DX | Open | Open | Open | pins 1 | pins 2 | | | | | | & 2 | & 3 | |-----------+----------+--------+---------+---------+--------| | SL486DX | 3 & 4 | Open | pins 4 | pins 1 | pins 2 | | | and 5 & | | & 5 | & 2 | & 3 | | | 6 | | | | | |-----------+----------+--------+---------+---------+--------| | SLODP486 | pins 5 & | Open | pins 4 | pins 1 | pins 2 | | | 6 | | & 5 | & 2 | & 3 | |-----------+----------+--------+---------+---------+--------| | ODP486SX | Open | Open | Open | pins 1 | pins 2 | | | | | | & 2 | & 3 | |-----------+----------+--------+---------+---------+--------| | CX486DX2 | 2 & 3 | pins 1 | 1 & 2 | 1 & 2 | pins 2 | | | and 4 & | & 2 | and 3 & | and 4 & | & 3 | | | 5 | | 4 | 5 | | |-----------+----------+--------+---------+---------+--------| | 80486DX2 | Open | Open | Open | pins 1 | pins 2 | | | | | | & 2 | & 3 | |-----------+----------+--------+---------+---------+--------| | SL486DX2 | 3 & 4 | Open | pins 4 | pins 1 | pins 2 | | | and 5 & | | & 5 | & 2 | & 3 | | | 6 | | | | | |-----------+----------+--------+---------+---------+--------| | 80486DX4 | 3 & 4 | pins 5 | pins 4 | pins 1 | pins 2 | | (2 x) | and 5 & | & 6 | & 5 | & 2 | & 3 | | | 6 | | | | | |-----------+----------+--------+---------+---------+--------| | 80486DX4 | 3 & 4 | pins 4 | pins 4 | pins 1 | pins 2 | | (2.5 x) | and 5 & | & 5 | & 5 | & 2 | & 3 | | | 6 | | | | | |-----------+----------+--------+---------+---------+--------| | 80486DX4 | 3 & 4 | Open | pins 4 | pins 1 | pins 2 | | (3 x) | and 5 & | | & 5 | & 2 | & 3 | | | 6 | | | | | |-----------+----------+--------+---------+---------+--------| | Pentium | pins 5 & | Open | pins 4 | pins 1 | pins 1 | | Overdrive | 6 | | & 5 | & 2 | & 2 | |------------------------------------------------------------| | Note:Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | HARDWARE TRAP CPU TYPE CONFIGURATION | |------------------------------------------------------------| | Type | JP5 | JP6 | |--------------------+-------------------+-------------------| | 80486SX | pins 1 & 2 closed | pins 2 & 3 closed | |--------------------+-------------------+-------------------| | CX486S | pins 2 & 3 closed | pins 1 & 2 closed | |--------------------+-------------------+-------------------| | CX486DX | pins 2 & 3 closed | pins 1 & 2 closed | |--------------------+-------------------+-------------------| | 80486DX | pins 1 & 2 closed | pins 2 & 3 closed | |--------------------+-------------------+-------------------| | SL486SX | pins 1 & 2 closed | pins 2 & 3 closed | |--------------------+-------------------+-------------------| | SL486DX | pins 1 & 2 closed | pins 2 & 3 closed | |--------------------+-------------------+-------------------| | 80486DX2 | pins 1 & 2 closed | pins 2 & 3 closed | |--------------------+-------------------+-------------------| | SL486DX2 | pins 1 & 2 closed | pins 2 & 3 closed | |--------------------+-------------------+-------------------| | SL486DX4 | pins 1 & 2 closed | pins 2 & 3 closed | |--------------------+-------------------+-------------------| | Pentium Overdrive | pins 1 & 2 closed | pins 1 & 2 closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION | |------------------------------------------------------------| | Speed | JP21 | JP22 | JP23 | |---------------+------------------+------------+------------| | 20MHz | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |---------------+------------------+------------+------------| | 25MHz | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |---------------+------------------+------------+------------| | 33MHz | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | |---------------+------------------+------------+------------| | 40MHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | | | closed | closed | closed | |---------------+------------------+------------+------------| | 50i MHz | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |---------------+------------------+------------+------------| | 50MHz | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | | | closed | closed | closed | |---------------+------------------+------------+------------| | 66i MHz | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | |---------------+------------------+------------+------------| | 75i MHz (3x) | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |---------------+------------------+------------+------------| | 82.5i MHz | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | | (2.5x) | closed | closed | closed | |---------------+------------------+------------+------------| | 99i MHz (3x) | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | |---------------+------------------+------------+------------| | 100i MHz (2x) | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | | | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VESA WAIT STATE/BUS SPEED CONFIGURATION | |------------------------------------------------------------| | CPU speed | Wait states | JP26 | JP27 | |-----------+---------------+-------------------+------------| | <=33MHz | 0 wait states | pins 1 & 2 closed | pins 1 & 2 | | | | | closed | |-----------+---------------+-------------------+------------| | >33MHz | 1 wait state | pins 2 & 3 closed | pins 2 & 3 | | | | | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE SELECTION | |------------------------------------------------------------| | Function | JP12 | JP15 | |------------------+--------------------+--------------------| | 3.3V (DX4) | pins 2 & 3 closed | pins 2 & 3 closed | |------------------+--------------------+--------------------| | 5V | pins 1 & 2 closed | pins 1 & 2 closed | +------------------------------------------------------------+