SOYO COMPUTER CO., LTD. ======================= SY-25 J/K/L Processor CX486S/80486SX/CX486DX/AM486DX/SL80486DX/AM486DX2/ 80486DX2/AM486DX4/80486DX4/P24D/P24T Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz Speed Chip Set Unidentified Video Chip None Set Maximum 128MB (EDO supported) Onboard Memory Maximum None Video Memory Cache 64/128/256KB BIOS Award Dimensions 254mm x 218mm I/O 32-bit VESA local bus slots (3), green PC connector Options NPU None Options +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | Power LED & | J17 | Turbo LED | J22 | | keylock | | | | |------------------+----------+-------------------+----------| | Speaker | J18 | Green PC | JP4 | | | | connector | | |------------------+----------+-------------------+----------| | Reset switch | J19 | Green PC | JP6 | | | | connector | | |------------------+----------+-------------------+----------| | External battery | J20 | Green PC | JP7 | | | | connector | | |------------------+----------+-------------------+----------| | Turbo switch | J21 | 32-bit VESA local | SL1 - | | | | bus slots | SL3 | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Label | Position | |-------------------------------------+-------+--------------| |>> | Monitor type select monochrome | JP3 | Open | |---+---------------------------------+-------+--------------| | | Monitor type select | JP3 | Closed | | | color/EGA/VGA | | | |---+---------------------------------+-------+--------------| |>> | CMOS memory normal operation | JP5 | Pins 1 & 2 | | | | | closed | |---+---------------------------------+-------+--------------| | | CMOS memory clear | JP5 | Pins 2 & 3 | | | | | closed | |---+---------------------------------+-------+--------------| |>> | Factory configured - do not | JP17 | Pins 1 & 2 | | | alter | | closed | |---+---------------------------------+-------+--------------| |>> | Factory configured - do not | JP27 | Pins 1 & 2 | | | alter | | closed | |---+---------------------------------+-------+--------------| |>> | Factory configured - do not | JP32 | Pins 1 & 2 | | | alter | | closed | |---+---------------------------------+-------+--------------| |>> | Factory configured - do not | JP34 | Unidentified | | | alter | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | SIMM CONFIGURATION 1 | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |------------+---------------+---------------+---------------| | 1MB | (4) 256K x 9 | None | None | |------------+---------------+---------------+---------------| | 2MB | (4) 256K x 9 | (1) 256K x 36 | None | |------------+---------------+---------------+---------------| | 4MB | (4) 1M x 9 | None | None | |------------+---------------+---------------+---------------| | 5MB | (4) 256K x 9 | (1) 1M x 36 | None | |------------+---------------+---------------+---------------| | 6MB | (4) 256K x 9 | (1) 256K x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 8MB | (4) 1M x 9 | (1) 1M x 36 | None | |------------+---------------+---------------+---------------| | 12MB | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 16MB | (4) 4M x 9 | None | None | |------------+---------------+---------------+---------------| | 17MB | (4) 256K x 9 | (1) 4M x 36 | None | |------------+---------------+---------------+---------------| | 18MB | (4) 256K x 9 | (1) 256K x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 20MB | (4) 1M x 9 | (1) 4M x 36 | None | |------------+---------------+---------------+---------------| | 24MB | (4) 1M x 9 | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 32MB | (4) 4M x 9 | (1) 4M x 36 | None | |------------+---------------+---------------+---------------| | 36MB | (4) 1M x 9 | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 48MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 64MB | (4) 16M x 9 | None | None | |------------+---------------+---------------+---------------| | 65MB | (4) 256K x 9 | (1) 16M x 36 | None | |------------+---------------+---------------+---------------| | 68MB | (4) 1M x 9 | (1) 16M x 36 | None | |------------+---------------+---------------+---------------| | 72MB | (4) 1M x 9 | (1) 1M x 36 | (1) 16M x 36 | |------------+---------------+---------------+---------------| | 80MB | (4) 4M x 9 | (1) 16M x 36 | None | |------------+---------------+---------------+---------------| | 96MB | (4) 4M x 9 | (1) 4M x 36 | (1) 16M x 36 | |------------+---------------+---------------+---------------| | 128MB | (4) 16M x 9 | (1) 16M x 36 | None | +------------------------------------------------------------+ +------------------------------------------------------------+ | SIMM CONFIGURATION 2 | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |------------+---------------+---------------+---------------| | 1MB | None | (1) 256K x 36 | None | |------------+---------------+---------------+---------------| | 2MB | None | (1) 256K x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 2MB | None | (1) 512K x 36 | None | |------------+---------------+---------------+---------------| | 4MB | None | (1) 512K x 36 | (1) 512K x 36 | |------------+---------------+---------------+---------------| | 4MB | None | (1) 1M x 36 | None | |------------+---------------+---------------+---------------| | 5MB | None | (1) 256K x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 6MB | (4) 1M x 9 | (1) 256K x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 6MB | None | (1) 512K x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 8MB | None | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 8MB | None | (1) 2M x 36 | None | |------------+---------------+---------------+---------------| | 12MB | (4) 1M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 12MB | None | (1) 1M x 36 | (1) 2M x 36 | |------------+---------------+---------------+---------------| | 16MB | None | (1) 2M x 36 | (1) 2M x 36 | |------------+---------------+---------------+---------------| | 16MB | None | (1) 4M x 36 | None | |------------+---------------+---------------+---------------| | 17MB | None | (1) 256K x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 18MB | (4) 4M x 9 | (1) 256K x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 18MB | None | (1) 512K x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 20MB | None | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 24MB | (4) 4M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 32MB | None | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 32MB | None | (1) 8M x 36 | None | |------------+---------------+---------------+---------------| | 36MB | (4) 4M x 9 | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 36MB | None | (1) 1M x 36 | (1) 8M x 36 | |------------+---------------+---------------+---------------| | 48MB | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 48MB | None | (1) 4M x 36 | (1) 8M x 36 | |------------+---------------+---------------+---------------| | 64MB | None | (1) 8M x 36 | (1) 8M x 36 | |------------+---------------+---------------+---------------| | 65MB | None | (1) 256K x 36 | (1) 16M x 36 | |------------+---------------+---------------+---------------| | 68MB | None | (1) 1M x 36 | (1) 16M x 36 | |------------+---------------+---------------+---------------| | 72MB | (4) 16M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 80MB | None | (1) 4M x 36 | (1) 16M x 36 | |------------+---------------+---------------+---------------| | 96MB | (4) 16M x 9 | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 128MB | None | (1) 16M x 36 | (1) 16M x 36 | |------------------------------------------------------------| | Note: Board also accepts x 32 SIMMs. | +------------------------------------------------------------+ +------------------------------------------------------------+ | SIMM JUMPER CONFIGURATION | |------------------------------------------------------------| | Configuration | JP35 | JP36 | JP37 | |---------------+------------------+------------+------------| | 1 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | | | closed | closed | closed | |---------------+------------------+------------+------------| | 2 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | | | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | TAG | |------------+--------------+--------------+-----------------| | 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | |------------+--------------+--------------+-----------------| | 128KB | (4) 32K x 8 | None | (1) 8K x 8 | |------------+--------------+--------------+-----------------| | 256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 16K/32K x 8 | |------------+--------------+--------------+-----------------| | 256KB (B) | (4) 64K x 8 | None | (1) 16K/32K x 8 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP9 | JP10 | JP13 | |-----------+----------------+---------------+---------------| | 64KB | Pins 2 & 3 | Open | Pins 1 & 2 | | | closed | | closed | |-----------+----------------+---------------+---------------| | 128KB | Pins 2 & 3 | Pins 1 & 2 | Pins 2 & 3 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 256KB (A) | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 256KB (B) | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 | | | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU SPEED SELECTION | |------------------------------------------------------------| | Speed | JP29 | JP30 | JP31 | |---------------+--------------+--------------+--------------| | 25MHz | Closed | Open | Closed | |---------------+--------------+--------------+--------------| | 33MHz | Open | Closed | Closed | |---------------+--------------+--------------+--------------| | 40MHz | Closed | Open | Open | |---------------+--------------+--------------+--------------| | 50iMHz | Closed | Open | Closed | |---------------+--------------+--------------+--------------| | 50MHz | Open | Closed | Open | |---------------+--------------+--------------+--------------| | 66iMHz | Open | Closed | Closed | |---------------+--------------+--------------+--------------| | 75iMHz | Closed | Open | Closed | |---------------+--------------+--------------+--------------| | 80iMHz | Closed | Open | Open | |---------------+--------------+--------------+--------------| | 100iMHz | Open | Closed | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE SELECTION | |------------------------------------------------------------| | Type | JP1 | JP2 | JP11 | JP12 | JP14 | |--------------+-------+-------+----------+-------+----------| | CX 486S | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | |--------------+-------+-------+----------+-------+----------| | 80486SX | 2 & 3 | 1 & 2 | 3 & 4 | 2 & 3 | 2 & 3 | |--------------+-------+-------+----------+-------+----------| | CX 486DX | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | |--------------+-------+-------+----------+-------+----------| | AM486DX | 2 & 3 | 1 & 2 | 3 & 4 | 2 & 3 | 3 & 4 | |--------------+-------+-------+----------+-------+----------| | SL80486DX | 2 & 3 | 1 & 2 | 3 & 4 | 2 & 3 | 3 & 4 | |--------------+-------+-------+----------+-------+----------| | AM486DX2 | 2 & 3 | 1 & 2 | 3 & 4 | 2 & 3 | 3 & 4 | |--------------+-------+-------+----------+-------+----------| | 80486DX2 | 2 & 3 | 1 & 2 | 3 & 4 | 2 & 3 | 3 & 4 | |--------------+-------+-------+----------+-------+----------| | AM486DX4 | 2 & 3 | 1 & 2 | 3 & 4 | 2 & 3 | 3 & 4 | |--------------+-------+-------+----------+-------+----------| | 80486DX4 | 2 & 3 | 1 & 2 | 3 & 4 | 2 & 3 | 3 & 4 | |--------------+-------+-------+----------+-------+----------| | 80486DX4 | 2 & 3 | 1 & 2 | 3 & 4 | 2 & 3 | 3 & 4 | | (ODP) | | | | | | |--------------+-------+-------+----------+-------+----------| | P24D | 1 & 2 | 1 & 2 | 1 & 2, 3 | 2 & 3 | 1 & 2, 3 | | | | | & 4 | | & 4 | |--------------+-------+-------+----------+-------+----------| | P24T | 2 & 3 | 1 & 2 | 3 & 4 | 2 & 3 | 3 & 4 | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE SELECTION (CON'T) | |------------------------------------------------------------| | Type | JP15 | JP16 | JP18 | JP19 | |------------------+----------+-----------+---------+--------| | CX 486S | 2 & 3 | Open | 2 & 3 | 2 & 3 | |------------------+----------+-----------+---------+--------| | 80486SX | Open | Open | 2 & 3 | 4 & 5 | |------------------+----------+-----------+---------+--------| | CX 486DX | 2 & 3 | Open | 2 & 3 | 2 & 3 | |------------------+----------+-----------+---------+--------| | AM486DX | 2 & 3 | Open | 2 & 3 | 4 & 5 | |------------------+----------+-----------+---------+--------| | SL80486DX | 2 & 3 | Open | 2 & 3 | 4 & 5 | |------------------+----------+-----------+---------+--------| | AM486DX2 | 2 & 3 | Open | 2 & 3 | 4 & 5 | |------------------+----------+-----------+---------+--------| | 80486DX2 | 2 & 3 | Open | 2 & 3 | 4 & 5 | |------------------+----------+-----------+---------+--------| | AM486DX4 | 2 & 3 | Open | 2 & 3 | 4 & 5 | |------------------+----------+-----------+---------+--------| | 80486DX4 | 2 & 3 | Open | 2 & 3 | 4 & 5 | |------------------+----------+-----------+---------+--------| | 80486DX4 (ODP) | 2 & 3 | Open | 2 & 3 | 4 & 5 | |------------------+----------+-----------+---------+--------| | P24D | 2 & 3 | Closed | 1 & 2 | 4 & 5 | |------------------+----------+-----------+---------+--------| | P24T | 1 & 2 | Open | 2 & 3 | 1 & 2 | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE SELECTION (CON'T) | |------------------------------------------------------------| | Type | JP20 | JP21 | JP22 | JP23 | |------------------+----------+----------+----------+--------| | CX 486S | Open | Open | 2 & 3 | 2 & 3 | |------------------+----------+----------+----------+--------| | 80486SX | Open | 1 & 2 | Open | Open | |------------------+----------+----------+----------+--------| | CX 486DX | Open | Open | 2 & 3 | 2 & 3 | |------------------+----------+----------+----------+--------| | AM486DX | Open | 1 & 2 | Open | Open | |------------------+----------+----------+----------+--------| | SL80486DX | Open | 1 & 2 | Open | Open | |------------------+----------+----------+----------+--------| | AM486DX2 | 2 & 3 | 1 & 2 | Open | Open | |------------------+----------+----------+----------+--------| | 80486DX2 | Open | 1 & 2 | Open | Open | |------------------+----------+----------+----------+--------| | AM486DX4 | 1 & 2 | 1 & 2 | Open | Open | |------------------+----------+----------+----------+--------| | 80486DX4 | Open | 1 & 2 | Open | Open | |------------------+----------+----------+----------+--------| | 80486DX4 (ODP) | Open | 1 & 2 | Open | Open | |------------------+----------+----------+----------+--------| | P24D | 1 & 2 | 2 & 3 | 1 & 2 | Open | |------------------+----------+----------+----------+--------| | P24T | Open | Open | 1 & 2 | 1 & 2 | |------------------------------------------------------------| | Note: Pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU VOLTAGE SELECTION | |------------------------------------------------------------| | Voltage | JP24 | |----------------------------+-------------------------------| | 3.45v | Pins 3 & 5, 4 & 6 closed | |----------------------------+-------------------------------| | 5v | Pins 1 & 3, 2 & 4 closed | +------------------------------------------------------------+