SOYO TECHNOLOGY CO., LTD. ========================= SY-045A2/A5 Processor 80486SX/80486SX2/CX486DX/U5S/80486DX/CX486DX2/AM486DX2/ 80486DX2/AM486DX4/80486DX4/P24D/Pentium Overdrive Processor 25/33/40/50(internal)/66(internal)/75(internal)/80(internal)/100(internal)MHz Speed Chip Set Unidentified Max. 256MB Onboard DRAM Cache 256/512/1024KB BIOS Award Dimensions 330mm x 218mm I/O 32-bit VESA local bus slot, 32-bit PCI slots (4), IDE interfaces (2), Options parallel port, serial ports (2) NPU None Options +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | Serial port 1 | CN1 | Reset switch | J19 | |------------------+----------+-------------------+----------| | Serial port 2 | CN2 | External battery | J20 | |------------------+----------+-------------------+----------| | Parallel port | CN3 | Turbo switch | J21 | |------------------+----------+-------------------+----------| | Floppy drive | CN4 | Turbo LED | J22 | | interface | | | | |------------------+----------+-------------------+----------| | IDE interface | CN5 | IDE interface LED | JP17 | | (primary) | | (secondary) | | |------------------+----------+-------------------+----------| | IDE interface | CN6 | IDE interface LED | JP18 | | (secondary) | | (primary) | | |------------------+----------+-------------------+----------| | Power LED & | J17 | 32-bit PCI slots | PCI1 - | | keylock | | | PCI4 | |------------------+----------+-------------------+----------| | Speaker | J18 | 32-bit VESA local | SL1 | | | | bus slot | | |------------------------------------------------------------| | Note: The locations of J19, J21, and J22 are unidentified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |------------------------------------+----------+------------| |>> | Factory configured - do not | J7 | Open | | | alter | | | |----+-------------------------------+----------+------------| |>> | Factory configured - do not | JP1 | N/A | | | alter | | | |----+-------------------------------+----------+------------| |>> | Factory configured - do not | JP2 | N/A | | | alter | | | |----+-------------------------------+----------+------------| |>> | Monitor type select color | JP3 | Closed | |----+-------------------------------+----------+------------| | | Monitor type select | JP3 | Open | | | monochrome | | | |----+-------------------------------+----------+------------| |>> | Factory configured - do not | JP4 | N/A | | | alter | | | |----+-------------------------------+----------+------------| |>> | CMOS memory normal operation | JP5 | pins 1 & 2 | | | | | closed | |----+-------------------------------+----------+------------| | | CMOS memory clear | JP5 | pins 2 & 3 | | | | | closed | |----+-------------------------------+----------+------------| |>> | Factory configured - do not | JP6 | Closed | | | alter | | | |----+-------------------------------+----------+------------| |>> | Factory configured - do not | JP7 | Open | | | alter | | | |----+-------------------------------+----------+------------| |>> | Factory configured - do not | JP12 | pins 1 & 2 | | | alter | | closed | |----+-------------------------------+----------+------------| |>> | Factory configured - do not | JP13 | N/A | | | alter | | | |----+-------------------------------+----------+------------| |>> | CPU signal type select SMOUT | JP15 | pins 1 & 2 | | | | | closed | |----+-------------------------------+----------+------------| | | CPU signal type select STPCLK | JP15 | pins 2 & 3 | | | | | closed | |----+-------------------------------+----------+------------| |>> | Factory configured - do not | JP19 | N/A | | | alter | | | |----+-------------------------------+----------+------------| |>> | Factory configured - do not | JP27 | pins 2 & 3 | | | alter | | closed | |----+-------------------------------+----------+------------| |>> | Factory configured - do not | JP28 | pins 2 & 3 | | | alter | | closed | |------------------------------------------------------------| | Note: The locations of JP1, JP2, JP3, JP4, JP13, JP19, and | | JP29 are unidentified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |------+-------------+-------------+------------+------------| | 1MB | (1) 256K x | NONE | NONE | NONE | | | 36 | | | | |------+-------------+-------------+------------+------------| | 2MB | (1) 256K x | (1) 256K x | NONE | NONE | | | 36 | 36 | | | |------+-------------+-------------+------------+------------| | 2MB | (1) 512K x | NONE | NONE | NONE | | | 36 | | | | |------+-------------+-------------+------------+------------| | 3MB | (1) 256K x | (1) 256K x | (1) 256K x | NONE | | | 36 | 36 | 36 | | |------+-------------+-------------+------------+------------| | 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x | | | 36 | 36 | 36 | 36 | |------+-------------+-------------+------------+------------| | 4MB | (1) 512K x | (1) 512K x | NONE | NONE | | | 36 | 36 | | | |------+-------------+-------------+------------+------------| | 4MB | (1) 1M x 36 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 5MB | (1) 256K x | (1) 1M x 36 | NONE | NONE | | | 36 | | | | |------+-------------+-------------+------------+------------| | 6MB | (1) 512K x | (1) 512K x | (1) 512K x | NONE | | | 36 | 36 | 36 | | |------+-------------+-------------+------------+------------| | 8MB | (1) 512K x | (1) 512K x | (1) 512K x | (1) 512K x | | | 36 | 36 | 36 | 36 | |------+-------------+-------------+------------+------------| | 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE | |------+-------------+-------------+------------+------------| | 8MB | (1) 2M x 36 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 12MB | (1) 512K x | (1) 512K x | (1) 1M x | (1) 1M x | | | 36 | 36 | 36 | 36 | |------+-------------+-------------+------------+------------| | 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |------+-------------+-------------+------------+------------| | 16MB | (1) 2M x 36 | (1) 2M x 36 | NONE | NONE | |------+-------------+-------------+------------+------------| | 16MB | (1) 4M x 36 | NONE | NONE | NONE | |------+-------------+-------------+------------+------------| | 17MB | (1) 256K x | (1) 4M x 36 | NONE | NONE | | | 36 | | | | |------+-------------+-------------+------------+------------| | 20MB | (1) 512K x | (1) 512K x | (1) 4M x | NONE | | | 36 | 36 | 36 | | |------+-------------+-------------+------------+------------| | 20MB | (1) 1M x 36 | (1) 4M x 36 | NONE | NONE | |------+-------------+-------------+------------+------------| | 24MB | (1) 512K x | (1) 512K x | (1) 1M x | (1) 4M x | | | 36 | 36 | 36 | 36 | |------+-------------+-------------+------------+------------| | 24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | NONE | | | | | 36 | | |------+-------------+-------------+------------+------------| | 24MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x | NONE | | | | | 36 | | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CON'T) | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |-------+-------------+------------+------------+------------| | 32MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | (1) 2M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 32MB | (1) 8M x 36 | NONE | NONE | NONE | |-------+-------------+------------+------------+------------| | 36MB | (1) 512K x | (1) 512K x | (1) 4M x | (1) 4M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 36MB | (1) 1M x 36 | (1) 4M x | (1) 4M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 36MB | (1) 1M x 36 | (1) 8M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 40MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 4M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 40MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 48MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 48MB | (1) 4M x 36 | (1) 8M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 64MB | (1) 16M x | NONE | NONE | NONE | | | 36 | | | | |-------+-------------+------------+------------+------------| | 64MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 64MB | (1) 8M x 36 | (1) 8M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 65MB | (1) 256K x | (1) 16M x | NONE | NONE | | | 36 | 36 | | | |-------+-------------+------------+------------+------------| | 68MB | (1) 1M x 36 | (1) 16M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 68MB | (1) 1M x 36 | (1) 8M x | (1) 8M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 70MB | (1) 16M x | (1) 512K x | (1) 512K x | (1) 512K x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 72MB | (1) 1M x 36 | (1) 1M x | (1) 16M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 72MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | (1) 8M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 80MB | (1) 4M x 36 | (1) 16M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 80MB | (1) 4M x 36 | (1) 8M x | (1) 8M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 88MB | (1) 16M x | (1) 2M x | (1) 2M x | (1) 2M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 96MB | (1) 4M x 36 | (1) 4M x | (1) 16M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 96MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | (1) 8M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 96MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | NONE | | | | 36 | 36 | | |-------+-------------+------------+------------+------------| | 112MB | (1) 16M x | (1) 4M x | (1) 4M x | (1) 4M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 128MB | (1) 16M x | (1) 16M x | NONE | NONE | | | 36 | 36 | | | |-------+-------------+------------+------------+------------| | 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 132MB | (1) 16M x | (1) 16M x | (1) 512K x | (1) 512K x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 144MB | (1) 16M x | (1) 16M x | (1) 2M x | (1) 2M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 160MB | (1) 16M x | (1) 16M x | (1) 4M x | (1) 4M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 160MB | (1) 16M x | (1) 8M x | (1) 8M x | (1) 8M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 192MB | (1) 16M x | (1) 16M x | (1) 16M x | NONE | | | 36 | 36 | 36 | | |-------+-------------+------------+------------+------------| | 192MB | (1) 16M x | (1) 16M x | (1) 8M x | (1) 8M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 194MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 512K x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 200MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 2M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 208MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 4M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 224MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 8M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 256MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x | | | 36 | 36 | 36 | 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | TAG | |------------+---------------+---------------+---------------| | 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | |------------+---------------+---------------+---------------| | 256KB | (4) 64K x 8 | NONE | (1) 32K x 8 | |------------+---------------+---------------+---------------| | 512KB | (4) 64K x 8 | (4) 32K x 8 | (1) 32K x 8 | |------------+---------------+---------------+---------------| | 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 | |------------+---------------+---------------+---------------| | 1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 64K x 8 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP25 | JP26 | JP29 | |-------+-----------------+-----------------+----------------| | 256KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |-------+-----------------+-----------------+----------------| | 256KB | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |-------+-----------------+-----------------+----------------| | 512KB | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | | | closed | closed | closed | |-------+-----------------+-----------------+----------------| | 512KB | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | | | closed | closed | closed | |-------+-----------------+-----------------+----------------| | 1MB | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | Type | JP30 | JP31 | JP32 | JP33 | JP34 | JP36 | |------------+-------+-------+-------+-------+-------+-------| | 80486SX | 3 & 4 | Open | 2 & 3 | Open | Open | Open | |------------+-------+-------+-------+-------+-------+-------| | 80486SX2 | 3 & 4 | Open | 2 & 3 | Open | Open | Open | |------------+-------+-------+-------+-------+-------+-------| | CX486DX | 2 & 3 | 3 & 4 | 1 & | 2 & 3 | Open | Open | | (5v) | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | U5S | Open | 1 & | 1 & | 3 & 4 | Open | Open | | | | 2, 3 | 2, 3 | | | | | | | & 4 | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | 80486DX | 3 & 4 | 3 & 4 | 1 & | Open | Open | Open | | | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | CX486DX2 | 2 & 3 | 3 & 4 | 1 & | 2 & 3 | Open | Open | | (3.6v) | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | CX486DX2 | 2 & 3 | 3 & 4 | 1 & | 2 & 3 | Open | Open | | (4v) | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | CX486DX2 | 2 & 3 | 3 & 4 | 1 & | 2 & 3 | Open | Open | | (5v) | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | AM486DX2 | 3 & 4 | 3 & 4 | 1 & | Open | 2 & 3 | Open | | (3.45v) | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | AM486DX2 | 3 & 4 | 3 & 4 | 1 & | Open | 2 & 3 | Open | | (5v) | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | AM486DX2 | 3 & 4 | 3 & 4 | 1 & | Open | 2 & 3 | 1 & 2 | | | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | 80486DX2 | 3 & 4 | 3 & 4 | 1 & | Open | Open | Open | | | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | AM486DX4 | 3 & 4 | 3 & 4 | 1 & | Open | 1 & 2 | Open | | (3.45v) | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | AM486DX4 | 3 & 4 | 3 & 4 | 1 & | Open | 1 & 2 | 1 & 2 | | | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | 80486DX4 | 3 & 4 | 3 & 4 | 1 & | Open | Open | Open | | | | | 2, 3 | | | | | | | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | P24D | 1 & | 3 & 4 | 1 & | Open | 1 & 2 | Open | | | 2, 3 | | 2, 3 | | | | | | & 4 | | & 4 | | | | |------------+-------+-------+-------+-------+-------+-------| | Pentium | 3 & 4 | 2 & 3 | 1 & | 1 & 2 | Open | 1 & 2 | | Overdrive | | | 2, 3 | | | | | | | | & 4 | | | | |------------------------------------------------------------| | Note: Pins designated should be in closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION (CON'T) | |------------------------------------------------------------| | Type | JP37 | JP38 | JP39 | JP40 | JP41 | |-----------------+-------+-------+-------+----------+-------| | 80486SX | 4 & 5 | Open | Open | 1 & 2, 3 | Open | | | | | | & 4 | | |-----------------+-------+-------+-------+----------+-------| | 80486SX2 | 4 & 5 | Open | Open | 1 & 2, 3 | Open | | | | | | & 4 | | |-----------------+-------+-------+-------+----------+-------| | CX486DX (5v) | 2 & 3 | 2 & 3 | Open | 1 & 2, 3 | Open | | | | | | & 4 | | |-----------------+-------+-------+-------+----------+-------| | U5S | Open | Open | Open | 1 & 2, 3 | Open | | | | | | & 4 | | |-----------------+-------+-------+-------+----------+-------| | 80486DX | 4 & 5 | Open | Open | 1 & 2, 3 | Open | | | | | | & 4 | | |-----------------+-------+-------+-------+----------+-------| | CX486DX2 (3.6v) | 2 & 3 | 2 & 3 | 3 & 4 | 3 & 4, 5 | Open | | | | | | & 6 | | |-----------------+-------+-------+-------+----------+-------| | CX486DX2 (4v) | 2 & 3 | 2 & 3 | 5 & 6 | 3 & 4, 5 | Open | | | | | | & 6 | | |-----------------+-------+-------+-------+----------+-------| | CX486DX2 (5v) | 2 & 3 | 2 & 3 | Open | 1 & 2, 3 | Open | | | | | | & 4 | | |-----------------+-------+-------+-------+----------+-------| | AM486DX2 | 4 & 5 | Open | 1 & 2 | 1 & 2, 3 | Open | | (3.45v) | | | | & 4 | | |-----------------+-------+-------+-------+----------+-------| | AM486DX2 (5v) | 4 & 5 | Open | 1 & 2 | 1 & 2, 3 | Open | | | | | | & 4 | | |-----------------+-------+-------+-------+----------+-------| | AM486DX2 | 4 & 5 | Open | 1 & 2 | 3 & 4, 5 | 2 & 3 | | | | | | & 6 | | |-----------------+-------+-------+-------+----------+-------| | 80486DX2 | 4 & 5 | Open | Open | 1 & 2, 3 | Open | | | | | | & 4 | | |-----------------+-------+-------+-------+----------+-------| | AM486DX4 | 4 & 5 | Open | 1 & 2 | 1 & 2, 3 | Open | | (3.45v) | | | | & 4 | | |-----------------+-------+-------+-------+----------+-------| | AM486DX4 | 4 & 5 | Open | 1 & 2 | 3 & 4, 5 | 2 & 3 | | | | | | & 6 | | |-----------------+-------+-------+-------+----------+-------| | 80486DX4 | 4 & 5 | Open | 1 & 2 | 3 & 4, 5 | Open | | | | | | & 6 | | |-----------------+-------+-------+-------+----------+-------| | P24D | 4 & 5 | 1 & 2 | Open | 1 & 2, 3 | 1 & 2 | | | | | | & 4 | | |-----------------+-------+-------+-------+----------+-------| | Pentium | 1 & 2 | 1 & 2 | Open | 1 & 2, 3 | Open | | Overdrive | | | | & 4 | | |------------------------------------------------------------| | Note: Pins designated should be in closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION (CON'T) | |------------------------------------------------------------| | Type | JP42 | JP43 | JP44 | JP45 | JP46 | |-------------------+--------+-------+-------+-------+-------| | 80486SX | 2 & 3 | Open | 1 & 2 | 1 & 2 | 1 & 2 | |-------------------+--------+-------+-------+-------+-------| | 80486SX2 | 2 & 3 | Open | 1 & 2 | 1 & 2 | 1 & 2 | |-------------------+--------+-------+-------+-------+-------| | CX486DX (5v) | 2 & 3 | Open | Open | 1 & 2 | 1 & 2 | |-------------------+--------+-------+-------+-------+-------| | U5S | 2 & 3 | Open | 1 & 2 | 2 & 3 | 4 & 5 | |-------------------+--------+-------+-------+-------+-------| | 80486DX | 2 & 3 | Open | 1 & 2 | 1 & 2 | 2 & 3 | |-------------------+--------+-------+-------+-------+-------| | CX486DX2 (3.6v) | 2 & 3 | Open | Open | 1 & 2 | 1 & 2 | |-------------------+--------+-------+-------+-------+-------| | CX486DX2 (4v) | 2 & 3 | Open | Open | 1 & 2 | 1 & 2 | |-------------------+--------+-------+-------+-------+-------| | CX486DX2 (5v) | 2 & 3 | Open | Open | 1 & 2 | 1 & 2 | |-------------------+--------+-------+-------+-------+-------| | AM486DX2 (3.45v) | 2 & 3 | Open | 1 & 2 | 1 & 2 | 2 & 3 | |-------------------+--------+-------+-------+-------+-------| | AM486DX2 (5v) | 2 & 3 | Open | 1 & 2 | 1 & 2 | 2 & 3 | |-------------------+--------+-------+-------+-------+-------| | AM486DX2 | 2 & 3 | Open | 4 & 5 | 1 & 2 | 2 & 3 | |-------------------+--------+-------+-------+-------+-------| | 80486DX2 | 2 & 3 | Open | 1 & 2 | 1 & 2 | 2 & 3 | |-------------------+--------+-------+-------+-------+-------| | AM486DX4 (3.45v) | 2 & 3 | Open | 1 & 2 | 1 & 2 | 2 & 3 | |-------------------+--------+-------+-------+-------+-------| | AM486DX4 | 2 & 3 | Open | 4 & 5 | 1 & 2 | 2 & 3 | |-------------------+--------+-------+-------+-------+-------| | 80486DX4 | 2 & 3 | Open | 1 & 2 | 1 & 2 | 2 & 3 | |-------------------+--------+-------+-------+-------+-------| | P24D | 1 & 2 | Open | 2 & 3 | 1 & 2 | 2 & 3 | |-------------------+--------+-------+-------+-------+-------| | Pentium Overdrive | 1 & 2 | Open | Open | 1 & 2 | 2 & 3 | |------------------------------------------------------------| | Note: Pins designated should be in closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED CONFIGURATION | |------------------------------------------------------------| | Speed | JP14 | JP21 | JP22 | |--------------+-------------------+------------+------------| | 25MHz | pins 1 & 2 closed | Open | Open | |--------------+-------------------+------------+------------| | 33MHz | pins 1 & 2 closed | Closed | Closed | |--------------+-------------------+------------+------------| | 40MHz | pins 1 & 2 closed | Closed | Open | |--------------+-------------------+------------+------------| | 50iMHz | pins 1 & 2 closed | Open | Open | |--------------+-------------------+------------+------------| | 66iMHz | pins 1 & 2 closed | Closed | Closed | |--------------+-------------------+------------+------------| | 75iMHz | pins 1 & 2 closed | Open | Open | |--------------+-------------------+------------+------------| | 80iMHz | pins 1 & 2 closed | Closed | Open | |--------------+-------------------+------------+------------| | 100iMHz | pins 1 & 2 closed | Closed | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRQ/DACK CONFIGURATION | |------------------------------------------------------------| | DRQ/DACK | JP8 | JP9 | JP10 | JP11 | |------------+-----------+-----------+-----------+-----------| | None | Open | Open | Open | Open | |------------+-----------+-----------+-----------+-----------| | DRQ3/DACK3 | Closed | Open | Open | Closed | |------------+-----------+-----------+-----------+-----------| | DRQ7/DACK7 | Open | Closed | Closed | Open | +------------------------------------------------------------+