FIRST INTERNATIONAL COMPUTER, INC. ================================== 486-GVT-2 Processor CX486S/80486SX/CX487S/CX486DX/80486DX/80486DX2/Pentium Overdrive Processor 25/33/50(internal)/50/66(internal)/66MHz Speed Chip Set VIA Max. 96MB Onboard DRAM Cache 64/128/256KB BIOS AMI Dimensions 259mm x 218mm I/O 32-bit VESA local bus slots (2), PS/2 mouse port Options +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |------------------+----------+-------------------+----------| | Turbo switch | J1 | Speaker | J10 | |------------------+----------+-------------------+----------| | Green power | J3 | Power LED & | J11 | | supply | | keylock | | |------------------+----------+-------------------+----------| | External battery | J4 | PS/2 mouse port | CN2 | |------------------+----------+-------------------+----------| | Turbo LED | J8 | Mouse connector | CN4 | |------------------+----------+-------------------+----------| | Reset switch | J9 | 32-bit VESA Local | SL0 & | | | | bus slots | SL1 | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |-------------------------------------+---------+------------| |>> | Monitor type select monochrome | J2 | Open | |---+---------------------------------+---------+------------| | | Monitor type select color | J2 | Closed | |---+---------------------------------+---------+------------| |>> | CMOS memory normal operation | J5 | pins 2 & 3 | | | (Internal Battery) | | closed | |---+---------------------------------+---------+------------| | | CMOS memory normal operation | J5 | pins 1 & 2 | | | (External Battery) | | closed | |---+---------------------------------+---------+------------| |>> | Transfer rate < 5.7MB/s | J6 | Open | |---+---------------------------------+---------+------------| | | Adaptec ISA master SCSI card | J6 | Closed | | | (transfer rate > 5.7MB/s) | | | |---+---------------------------------+---------+------------| |>> | CMOS memory normal operation | J7 | Closed | |---+---------------------------------+---------+------------| | | CMOS memory clear | J7 | Open | |---+---------------------------------+---------+------------| |>> | Cyrix CPU 1X clock mode | J12 | pins 2 & 3 | | | | | closed | |---+---------------------------------+---------+------------| | | Cyrix CPU 2X clock mode | J12 | pins 1 & 2 | | | | | closed | |---+---------------------------------+---------+------------| | | 80486SX/P23S/P4S/CX486S | JC6 | Closed | | | disabled | | | |---+---------------------------------+---------+------------| | | 80486SX/P23S/P4S/CX486S enabled | JC6 | Open | |---+---------------------------------+---------+------------| |>> | Factory configured - do not | JP1 | pins 1 & 2 | | | alter | | closed | |---+---------------------------------+---------+------------| |>> | IRQ 15 (regular CPU) | JP2,JX2 | pins 1 & 2 | | | | | closed | |---+---------------------------------+---------+------------| | | SMI (Cyrix/Intel S series) | JP2,JX2 | pins 2 & 3 | | | | | closed | |---+---------------------------------+---------+------------| |>> | Local bus IDE interface | JP4 | pins 1 & 2 | | | disabled | | closed | |---+---------------------------------+---------+------------| | | Local bus IDE interface enabled | JP4 | pins 2 & 3 | | | (SL0 only) | | closed | |---+---------------------------------+---------+------------| |>> | Factory configured - do not | JP5 | pins 1 & 2 | | | alter | | closed | |---+---------------------------------+---------+------------| | | P24T write back | JT1 | pins 1 & 2 | | | | | closed | |---+---------------------------------+---------+------------| | | P24T write through | JT1 | pins 2 & 3 | | | | | closed | |---+---------------------------------+---------+------------| |>> | Intel S-series CPU | JCX1 | Open | |---+---------------------------------+---------+------------| | | Cyrix CX486S/DX | JCX1 | Closed | |---+---------------------------------+---------+------------| |>> | Intel S-series CPU | JCX2 | pins 1 & 2 | | | | | closed | |---+---------------------------------+---------+------------| | | Cyrix CX486S/DX | JCX2 | pins 2 & 3 | | | | | closed | |---+---------------------------------+---------+------------| |>> | CPU clock 1X | JX1 | pins 1 & 2 | | | | | closed | |---+---------------------------------+---------+------------| | | CPU clock 2X | JX1 | pins 2 & 3 | | | | | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |------------+---------------+---------------+---------------| | 1MB | (4) 256K x 9 | NONE | NONE | |------------+---------------+---------------+---------------| | 1MB | NONE | (1) 256K x 36 | NONE | |------------+---------------+---------------+---------------| | 1MB | NONE | NONE | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 2MB | (4) 256K x 9 | (1) 256K x 36 | NONE | |------------+---------------+---------------+---------------| | 2MB | NONE | (1) 256K x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 2MB | (4) 256K x 9 | NONE | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 3MB | (4) 256K x 9 | (1) 256K x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 4MB | (4) 1M x 9 | NONE | NONE | |------------+---------------+---------------+---------------| | 4MB | NONE | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 4MB | NONE | NONE | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 5MB | (4) 256K x 9 | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 5MB | (4) 256K x 9 | NONE | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 5MB | (4) 1M x 9 | (1) 256K x 36 | NONE | |------------+---------------+---------------+---------------| | 5MB | (4) 1M x 9 | NONE | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 5MB | NONE | (1) 256K x 36 | (1) 1M x 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CONTINUED) | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |------------+---------------+---------------+---------------| | 5MB | NONE | (1) 1M x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 6MB | (4) 256K x 9 | (1) 1M x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 6MB | (4) 256K x 9 | (1) 256K x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 6MB | (4) 1M x 9 | (1) 256K x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 8MB | (4) 1M x 9 | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 8MB | (4) 1M x 9 | NONE | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 8MB | NONE | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 9MB | (4) 256K x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 9MB | (4) 1M x 9 | (1) 256K x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 9MB | (4) 1M x 9 | (1) 1M x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 12MB | (4) 1M x 9 | (1) 1M x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 16MB | (4) 4M x 9 | NONE | NONE | |------------+---------------+---------------+---------------| | 16MB | NONE | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 16MB | NONE | NONE | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 17MB | (4) 256K x 9 | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 17MB | (4) 256K x 9 | NONE | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 17MB | NONE | (1) 256K x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 17MB | NONE | (1) 4M x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 17MB | (4) 4M x 9 | (1) 256K x 36 | NONE | |------------+---------------+---------------+---------------| | 17MB | (4) 4M x 9 | NONE | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 18MB | (4) 256K x 9 | (1) 256K x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 18MB | (4) 256K x 9 | (1) 4M x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 18MB | (4) 4M x 9 | (1) 256K x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 20MB | (4) 1M x 9 | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 20MB | (4) 1M x 9 | NONE | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 20MB | (4) 4M x 9 | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 20MB | (4) 4M x 9 | NONE | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 20MB | NONE | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 20MB | NONE | (1) 4M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 21MB | (4) 256K x 9 | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 21MB | (4) 256K x 9 | (1) 4M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 21MB | (4) 1M x 9 | (1) 256K x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 21MB | (4) 1M x 9 | (1) 4M x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 21MB | (4) 4M x 9 | (1) 256K x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 21MB | (4) 4M x 9 | (1) 1M x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 24MB | (4) 1M x 9 | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 24MB | (4) 1M x 9 | (1) 4M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 24MB | (4) 4M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 32MB | (4) 4M x 9 | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 32MB | (4) 4M x 9 | NONE | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 32MB | NONE | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 33MB | (4) 256K x 9 | (1) 4M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 33MB | (4) 4M x 9 | (1) 256K x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 33MB | (4) 4M x 9 | (1) 4M x 36 | (1) 256K x 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | |------------+---------------+---------------+---------------| | 36MB | (4) 4M x 9 | (1) 4M x 36 | (1) 256K x 36 | |------------+---------------+---------------+---------------| | 36MB | (4) 4M x 9 | (1) 256K 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) 16M x 9 | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 65MB | (4) 16M x 9 | NONE | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 66MB | (4) 16M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 68MB | (4) 16M x 9 | (1) 1M x 36 | NONE | |------------+---------------+---------------+---------------| | 68MB | (4) 16M x 9 | NONE | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 69MB | (4) 16M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 69MB | (4) 16M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 72MB | (4) 16M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 80MB | (4) 16M x 9 | (1) 4M x 36 | NONE | |------------+---------------+---------------+---------------| | 80MB | (4) 16M x 9 | NONE | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 81MB | (4) 16M x 9 | (1) 1M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 81MB | (4) 16M x 9 | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 81MB | (4) 16M x 9 | (1) 4M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 84MB | (4) 16M x 9 | (1) 1M x 36 | (1) 4M x 36 | |------------+---------------+---------------+---------------| | 84MB | (4) 16M x 9 | (1) 4M x 36 | (1) 1M x 36 | |------------+---------------+---------------+---------------| | 96MB | (4) 16M x 9 | (1) 4M x 36 | (1) 4M x 36 | +------------------------------------------------------------+ +------------------------------------------------------------+ | 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 | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JS1 | JS2 | JS3 | |-------+-----------------+-----------------+----------------| | 64KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |-------+-----------------+-----------------+----------------| | 128KB | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | |-------+-----------------+-----------------+----------------| | 256KB | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | | | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | CPU type | RN13 | RN14 | RN16 | |-----------------+--------------+-------------+-------------| | CX486S & | Not | Not | Installed | | 487S/DX | installed | installed | | |-----------------+--------------+-------------+-------------| | SX/DX/DX2 | Not | Not | Not | | | installed | installed | installed | |-----------------+--------------+-------------+-------------| | P23S/P4S/P24S | Installed | Not | Not | | | | installed | installed | |-----------------+--------------+-------------+-------------| | P23S/P4S/CX486S | Not | Installed | Not | | | installed | | installed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | CPU type | JC1 | JC2 | JC3 | JC4 | JC5 | JC7 | |-------------+------+------+--------+--------+--------+-----| | CX486S | 2 & | 2 & | Closed | Open | Open | 1 & | | | 3 | 3 | | | | 2 | |-------------+------+------+--------+--------+--------+-----| | CX486S/487S | 1 & | 1 & | Closed | Open | Open | 1 & | | | 2 | 2 | | | | 2 | |-------------+------+------+--------+--------+--------+-----| | 486SX/P23S | 2 & | 2 & | Open | Open | Closed | 1 & | | | 3 | 3 | | | | 2 | |-------------+------+------+--------+--------+--------+-----| | CX486DX | 1 & | 1 & | Closed | Open | Open | 1 & | | | 2 | 2 | | | | 2 | |-------------+------+------+--------+--------+--------+-----| | DX/DX2 | 1 & | 1 & | Closed | Open | Closed | 1 & | | | 2 | 2 | | | | 2 | |-------------+------+------+--------+--------+--------+-----| | P24S/P4S | 1 & | 1 & | Closed | Open | Closed | 1 & | | | 2 | 2 | | | | 2 | |-------------+------+------+--------+--------+--------+-----| | P24T | 1 & | 1 & | Open | Closed | Open | 2 & | | | 2 | 2 | | | | 3 | |------------------------------------------------------------| | Note: pins designated should be in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU CLOCK SELECT | |------------------------------------------------------------| | Speed | JK1 | JK2 | JK3 | JK4 | |--------+------------+------------+------------+------------| | 25MHz | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | | | closed | closed | closed | closed | |--------+------------+------------+------------+------------| | 33MHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | closed | |--------+------------+------------+------------+------------| | 40MHz | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | | | closed | closed | closed | closed | |--------+------------+------------+------------+------------| | 50MHz | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | closed | |--------+------------+------------+------------+------------| | 66MHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | | | closed | closed | closed | closed | |--------+------------+------------+------------+------------| | 80MHz | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | closed | |--------+------------+------------+------------+------------| | 100MHz | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | | | closed | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VESA WAIT STATE/BUS SPEED CONFIGURATION | |------------------------------------------------------------| | CPU speed | Wait states | JV2 | JV3 | |-----------+---------------+-------------------+------------| | < 33MHz | 0 wait states | pins 1 & 2 closed | pins 1 & 2 | | | | | closed | |-----------+---------------+-------------------+------------| | > 33MHz | 1 wait state | pins 2 & 3 closed | pins 2 & 3 | | | | | closed | +------------------------------------------------------------+