FORCOM TECHNOLOGY CORPORATION ============================= 419 Processor 80486SX/CX486S/80487SX/CX486S2/80486DX/Am486DX/CX486DX/ODP486SX/80486DX2/Am468DX2/Cx486DX2/80486DX4/Pentium Overdrive Processor 20/25/33/40/50/50(internal)/66i/75i/100iMHz Speed Chip Set OPTI Max. 128MB Onboard DRAM Cache 64/128/256/512KB BIOS AMI Dimensions 220mm x 260mm I/O 32-bit VESA local bus slots (3), Green PC feature Options NPU None Options +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |---------------+----------+-------------------+-------------| | External | J1 | Green monitor | JP63 | | battery | | power supply | | |---------------+----------+-------------------+-------------| | Power LED & | JP2 | External power | JP68 | | keylock | | management | | | | | interface | | |---------------+----------+-------------------+-------------| | Turbo LED | JP16 | Reset switch | S1 | |---------------+----------+-------------------+-------------| | Turbo switch | JP17 | 32-bit VESA Local | SL1,SL2,SL3 | | | | bus slots | | |---------------+----------+-------------------+-------------| | Speaker | JP18 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper | Position | |-------------------------------------+--------+-------------| |>> | Monitor type select color | JP30 | Closed | |---+---------------------------------+--------+-------------| | | Monitor type select monochrome | JP30 | Open | |---+---------------------------------+--------+-------------| |>> | Normal CPU ADS# operation | JP36 | pins 2 & 3 | |---+---------------------------------+--------+-------------| | | Delay CPU ADS# clock operation | JP36 | pins 1 & 2 | |---+---------------------------------+--------+-------------| |>> | Power to CPU set at 5V | JP64 | pins 1 & 3, | | | | | 2 & 4 | |---+---------------------------------+--------+-------------| | | Power to CPU set at 3.3V (for | JP64 | pins 4 & 6, | | | Intel DX4 CPU) | | 3 & 5 | |---+---------------------------------+--------+-------------| | | Set CPU external operation | JP65 | Open | | | clock to 3X | | | |---+---------------------------------+--------+-------------| | | Set CPU external operation | JP65 | Closed | | | clock to 2X | | | |---+---------------------------------+--------+-------------| | | Cache size enabled 64KB or | JP67 | Closed | | | 256KB | | | |---+---------------------------------+--------+-------------| | | Cache size enabled 128KB or | JP67 | Open | | | 512KB | | | |------------------------------------------------------------| | Note:Jumper JP65, for any type of CPU other than above | | listed, leave "Open". | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 | |-------+-------------+------------+------------+------------| | 2MB | (1) 256K x | (1) 256K x | NONE | NONE | | | 36 | 36 | | | |-------+-------------+------------+------------+------------| | 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 4MB | (1) 1M x 36 | NONE | NONE | NONE | |-------+-------------+------------+------------+------------| | 5MB | (1) 256K x | (1) 1M x | NONE | NONE | | | 36 | 36 | | | |-------+-------------+------------+------------+------------| | 8MB | (1) 1M x 36 | (1) 1M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 10MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 1M x | | | 36 | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 12MB | (1) 1M x 36 | NONE | (1) 1M x | (1) 1M x | | | | | 36 | 36 | |-------+-------------+------------+------------+------------| | 16MB | (1) 4M x 36 | NONE | NONE | NONE | |-------+-------------+------------+------------+------------| | 16MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | (1) 1M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 20MB | (1) 1M x 36 | (1) 4M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 20MB | (1) 1M x 36 | NONE | (1) 4M x | NONE | | | | | 36 | | |-------+-------------+------------+------------+------------| | 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE | | | | 36 | | | |-------+-------------+------------+------------+------------| | 64MB | (1) 16M x | NONE | NONE | NONE | | | 36 | | | | |-------+-------------+------------+------------+------------| | 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x | | | | 36 | 36 | 36 | |-------+-------------+------------+------------+------------| | 128MB | (1) 16M x | (1) 16M x | NONE | NONE | | | 36 | 36 | | | |-------+-------------+------------+------------+------------| | 128MB | (1) 16M x | NONE | (1) 16M x | NONE | | | 36 | | 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) 32K x 8 | |------------+---------------+---------------+---------------| | 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | |------------+---------------+---------------+---------------| | 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 | +------------------------------------------------------------+ +------------------------------------------------------------+ | CACHE JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP10 | JP11 | JP13 | JP50 | |---------+----------+---------+-------------------+---------| | 64KB | Open | Open | pins 2 & 3 closed | Open | |---------+----------+---------+-------------------+---------| | 128KB | Open | Closed | pins 1 & 2 closed | Open | |---------+----------+---------+-------------------+---------| | 256KB | Closed | Closed | pins 2 & 3 closed | Open | |---------+----------+---------+-------------------+---------| | 512KB | Closed | Closed | pins 1 & 2 closed | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | INTERNAL CACHE TYPE CONFIGURATION | |------------------------------------------------------------| | CPU Type | Internal Cache Type | JP58 | JP59 | |--------------+---------------------+-----------+-----------| | P24T | Write-Through | Open | N/A | |--------------+---------------------+-----------+-----------| | P24T | Write-Back | Closed | N/A | |--------------+---------------------+-----------+-----------| | P24D | Write-Through | N/A | Open | |--------------+---------------------+-----------+-----------| | P24D | Write-Back | N/A | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION | |------------------------------------------------------------| | CPU Type | JP3 | JP5 | JP8 | JP42 | JP43 | JP44 | |----------+--------+-------+-------+-------+-------+--------| | 80486SX | Open | Open | pins | Open | pins | Open | | | | | 2 & 3 | | 1 & 2 | | |----------+--------+-------+-------+-------+-------+--------| | AM486 | pins 1 | pins | pins | Open | pins | Open | | | & 2 | 2 & 3 | 1 & 2 | | 1 & 2 | | |----------+--------+-------+-------+-------+-------+--------| | Cx486S | Open | Open | pins | pins | pins | Open | | | | | 2 & 3 | 2 & 3 | 1 & 2 | | |----------+--------+-------+-------+-------+-------+--------| | 80487SX | pins 2 | pins | pins | Open | pins | Open | | | & 3 | 2 & 3 | 1 & 2 | | 1 & 2 | | |----------+--------+-------+-------+-------+-------+--------| | Cx486S2 | Open | Open | pins | pins | pins | Open | | | | | 2 & 3 | 2 & 3 | 2 & 3 | | |----------+--------+-------+-------+-------+-------+--------| | 80486DX | pins 1 | pins | pins | Open | pins | Open | | | & 2 | 2 & 3 | 1 & 2 | | 1 & 2 | | |----------+--------+-------+-------+-------+-------+--------| | Cx486DX | pins 1 | pins | pins | pins | pins | Open | | | & 2 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 | | |----------+--------+-------+-------+-------+-------+--------| | Cx486DX2 | pins 1 | pins | pins | pins | pins | Open | | | & 2 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | | |----------+--------+-------+-------+-------+-------+--------| | P24C | pins 1 | pins | pins | pins | pins | Closed | | (DX4) | & 2 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | | |----------+--------+-------+-------+-------+-------+--------| | P24T | pins 2 | pins | pins | Open | pins | Open | | | & 3 | 2 & 3 | 1 & 2 | | 1 & 2 | | |----------+--------+-------+-------+-------+-------+--------| | P24D | pins 2 | pins | pins | Open | pins | Open | | | & 3 | 2 & 3 | 1 & 2 | | 1 & 2 | | |------------------------------------------------------------| | Note:Pins designated are in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE CONFIGURATION (CONTINUED) | |------------------------------------------------------------| | CPU Type | JP45 | JP46 | JP47 | JP48 | JP49 | |------------+--------+--------+--------+--------+-----------| | 80486SX | Open | Open | Open | Open | pins 1 & | | | | | | | 2 | |------------+--------+--------+--------+--------+-----------| | AMD486 | Open | Open | Open | Open | pins 1 & | | | | | | | 2 | |------------+--------+--------+--------+--------+-----------| | Cx486S | Open | Open | Closed | Closed | pins 1 & | | | | | | | 2 | |------------+--------+--------+--------+--------+-----------| | 80487SX | Open | Open | Open | Open | pins 1 & | | | | | | | 2 | |------------+--------+--------+--------+--------+-----------| | Cx486S2 | Open | Open | Closed | Closed | pins 2 & | | | | | | | 3 | |------------+--------+--------+--------+--------+-----------| | 80486DX | Open | Open | Open | Open | pins 1 & | | | | | | | 2 | |------------+--------+--------+--------+--------+-----------| | Cx486DX | Open | Open | Closed | Closed | pins 1 & | | | | | | | 2 | |------------+--------+--------+--------+--------+-----------| | Cx486DX2 | Open | Open | Closed | Closed | pins 2 & | | | | | | | 3 | |------------+--------+--------+--------+--------+-----------| | P24C (DX4) | Closed | Closed | Open | Open | pins 1 & | | | | | | | 2 | |------------+--------+--------+--------+--------+-----------| | P24T | Open | Open | Open | Open | pins 1 & | | | | | | | 2 | |------------+--------+--------+--------+--------+-----------| | P24D | Open | Open | Open | Open | pins 1 & | | | | | | | 2 | |------------------------------------------------------------| | Note:Pins designated are in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE (S-SERIES) CONFIGURATION | |------------------------------------------------------------| | CPU | JP3 | JP5 | JP8 | JP42 | JP43 | JP44 | | Type | | | | | | | |---------+--------+--------+-------+-------+-------+--------| | 80486SX | Open | Open | pins | pins | pins | Closed | | | | | 2 & 3 | 1 & 2 | 1 & 2 | | |---------+--------+--------+-------+-------+-------+--------| | 80486DX | pins 1 | pins 2 | pins | pins | pins | Closed | | | & 2 | & 3 | 1 & 2 | 1 & 2 | 1 & 2 | | |------------------------------------------------------------| | Note:Pins designated are in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | CPU TYPE (S-SERIES) CONFIGURATION | |------------------------------------------------------------| | CPU Type | JP45 | JP46 | JP47 | JP48 | JP49 | |----------+----------+---------+-------+-------+------------| | 80486SX | Closed | Closed | Open | Open | pins 1 & 2 | |----------+----------+---------+-------+-------+------------| | 80486DX | Closed | Closed | Open | Open | pins 1 & 2 | |------------------------------------------------------------| | Note:Pins designated are in the closed position. | +------------------------------------------------------------+ +------------------------------------------------------------+ | BUS SPEED (ID3) CONFIGURATION | |------------------------------------------------------------| | CPU speed | JP34 | |-------------------------------+----------------------------| | <= 33MHz | Open | |-------------------------------+----------------------------| | > 33MHz | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | VESA WAIT STATE (ID2) CONFIGURATION | |------------------------------------------------------------| | Wait states | JP33 | |-------------------------------+----------------------------| | 0 wait states | Open | |-------------------------------+----------------------------| | 1 wait state | Closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | SYSTEM CLOCK (NOT FOR P24C) CONFIGURATION | |------------------------------------------------------------| | Frequency | JP21 | JP22 | JP23 | |-----------+----------------+---------------+---------------| | 20MHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 25MHz | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 33MHz | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 40MHz | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 50MHz | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 | | | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | SYSTEM CLOCK (FOR P24C (DX4)) CONFIGURATION | |------------------------------------------------------------| | Frequency | JP21 | JP22 | JP23 | |-----------+----------------+---------------+---------------| | 25MHz | pins 2 & 3 | Open | pins 2 & 3 | | | closed | | closed | |-----------+----------------+---------------+---------------| | 33MHz | Open | pins 2 & 3 | pins 2 & 3 | | | | closed | closed | |-----------+----------------+---------------+---------------| | 50MHz | Open | pins 2 & 3 | Open | | | | closed | | +------------------------------------------------------------+