UNIDENTIFIED ============ JS-168A Processor 80286 (exact location unidentified) Processor Speed 12MHz Chip Set Unidentified Max. Onboard DRAM 4MB Cache None BIOS AMI/Award/ERSO/Phoenix Dimensions 330mm x 218mm I/O Options None NPU Options 80287 (exact location unidentified) +------------------------------------------------------------+ | CONNECTIONS | |------------------------------------------------------------| | Purpose | Location | Purpose | Location | |---------------------+----------+----------------+----------| | Power LED & keylock | J20 | Turbo LED | JP8 | |---------------------+----------+----------------+----------| | Reset switch | JP6 | Speaker | JP10 | |---------------------+----------+----------------+----------| | Turbo switch | JP7 | | | +------------------------------------------------------------+ +------------------------------------------------------------+ | USER CONFIGURABLE SETTINGS | |------------------------------------------------------------| | Function | Jumper/Switch | Position | |-------------------------------+---------------+------------| | | Wait state select 0 wait | JP5 | Closed | | | states | | | |---+---------------------------+---------------+------------| | | Wait state select 1 wait | JP5 | Open | | | state | | | |---+---------------------------+---------------+------------| | | Turbo select keyboard | JP9 | pins 1 & 2 | | | control | | closed | |---+---------------------------+---------------+------------| | | Turbo select controlled | JP9 | pins 2 & 3 | | | by SW1/1 | | closed | |---+---------------------------+---------------+------------| | | CPU speed select low | SW1/1 | On | |---+---------------------------+---------------+------------| | | CPU speed select high | SW1/1 | Off | |---+---------------------------+---------------+------------| | | Monitor type select color | SW1/2 | On | |---+---------------------------+---------------+------------| | | Monitor type select | SW1/2 | Off | | | monochrome | | | |---+---------------------------+---------------+------------| | | Parity enabled | SW1/3 | On | |---+---------------------------+---------------+------------| | | Parity disabled | SW1/3 | Off | |---+---------------------------+---------------+------------| | | EMS port address select | SW1/4 | On | | | 0E8H | | | |---+---------------------------+---------------+------------| | | EMS port address select | SW1/4 | Off | | | 098H | | | |---+---------------------------+---------------+------------| | | BIOS type select 27128 | SW1/5 | On | |---+---------------------------+---------------+------------| | | BIOS type select 27256 | SW1/5 | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION | |------------------------------------------------------------| | Size | Bank A | Bank B | Bank B/0 | |----------+-------------+--------+--------------------------| | 512KB | (18) 41256 | NONE | NONE | | (A) | | | | |----------+-------------+--------+--------------------------| | 512KB | NONE | NONE | (4) 44256 & (2) 41256 | | (B) | | | | |----------+-------------+--------+--------------------------| | 512KB | NONE | NONE | NONE | | (C) | | | | |----------+-------------+--------+--------------------------| | 640KB(A) | (18) 4164 | NONE | (4) 44256 & (2) 41256 | |----------+-------------+--------+--------------------------| | 640KB(B) | (18) 4164 | NONE | NONE | |----------+-------------+--------+--------------------------| | 640KB | NONE | NONE | (4) 44256 & (2) 41256 & | | (C) | | | (4) 4464 & (2) 4164 | |----------+-------------+--------+--------------------------| | 1MB (A) | NONE | NONE | (8) 44256 & (4) 41256 | |----------+-------------+--------+--------------------------| | 1MB (B) | NONE | NONE | NONE | |----------+-------------+--------+--------------------------| | 1MB (C) | (18) 41256 | NONE | (4) 44256 & (2) 41256 | |----------+-------------+--------+--------------------------| | 1MB (D) | (18) 41256 | NONE | NONE | |----------+-------------+--------+--------------------------| | 1MB (E) | (18) 41256 | NONE | NONE | |----------+-------------+--------+--------------------------| | 1MB (F) | (18) 41256 | NONE | NONE | |----------+-------------+--------+--------------------------| | 2MB (A) | (18) IBM | NONE | NONE | | | DRAM | | | |----------+-------------+--------+--------------------------| | 2MB (B) | NONE | NONE | NONE | |----------+-------------+--------+--------------------------| | 4MB (A) | NONE | NONE | NONE | |----------+-------------+--------+--------------------------| | 4MB (B) | (18) 41256 | NONE | NONE | |----------+-------------+--------+--------------------------| | 4MB (C) | (18) 41256 | NONE | NONE | |------------------------------------------------------------| | Note: The orientation of the DRAM banks is unidentified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM CONFIGURATION (CON'T) | |------------------------------------------------------------| | Size | Bank B/1 | Bank C | Bank | Bank | | | | | C/SIM 0 | C/SIM 1 | |------------+----------------+--------+----------+----------| | 512KB (A) | NONE | NONE | NONE | NONE | |------------+----------------+--------+----------+----------| | 512KB (B) | NONE | NONE | NONE | NONE | |------------+----------------+--------+----------+----------| | 512KB (C) | NONE | NONE | (2) 256K | NONE | | | | | x 9 | | |------------+----------------+--------+----------+----------| | 640KB(A) | NONE | NONE | NONE | NONE | |------------+----------------+--------+----------+----------| | 640KB(B) | NONE | NONE | (2) 256K | NONE | | | | | x 9 | | |------------+----------------+--------+----------+----------| | 640KB (C) | NONE | NONE | NONE | NONE | |------------+----------------+--------+----------+----------| | 1MB (A) | NONE | NONE | NONE | NONE | |------------+----------------+--------+----------+----------| | 1MB (B) | NONE | NONE | (2) 256K | (2) 256K | | | | | x 9 | x 9 | |------------+----------------+--------+----------+----------| | 1MB (C) | NONE | NONE | NONE | NONE | |------------+----------------+--------+----------+----------| | 1MB (D) | (4) 44256 & | NONE | NONE | NONE | | | (2) 41256 | | | | |------------+----------------+--------+----------+----------| | 1MB (E) | NONE | NONE | (2) 256K | NONE | | | | | x 9 | | |------------+----------------+--------+----------+----------| | 1MB (F) | NONE | NONE | NONE | (2) 256K | | | | | | x 9 | |------------+----------------+--------+----------+----------| | 2MB (A) | NONE | NONE | NONE | NONE | |------------+----------------+--------+----------+----------| | 2MB (B) | NONE | NONE | (2) 1M x | NONE | | | | | 9 | | |------------+----------------+--------+----------+----------| | 4MB (A) | NONE | NONE | (2) 1M x | (2) 1M x | | | | | 9 | 9 | |------------+----------------+--------+----------+----------| | 4MB (B) | NONE | NONE | (2) 1M x | NONE | | | | | 9 | | |------------+----------------+--------+----------+----------| | 4MB (C) | NONE | NONE | NONE | (2) 1M x | | | | | | 9 | |------------------------------------------------------------| | Note: The orientation of the DRAM banks is unidentified. | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM JUMPER CONFIGURATION | |------------------------------------------------------------| | Size | JP21 | JP22 | JP23 | |-----------+----------------+---------------+---------------| | 512KB (A) | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 512KB (B) | N/A | N/A | N/A | |-----------+----------------+---------------+---------------| | 512KB (C) | N/A | N/A | N/A | |-----------+----------------+---------------+---------------| | 640KB (A) | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 640KB (B) | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 640KB (C) | N/A | N/A | N/A | |-----------+----------------+---------------+---------------| | 1MB (A) | N/A | N/A | N/A | |-----------+----------------+---------------+---------------| | 1MB (B) | N/A | N/A | N/A | |-----------+----------------+---------------+---------------| | 1MB (C) | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 1MB (D) | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 1MB (E) | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 1MB (F) | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 2MB (A) | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 2MB (B) | N/A | N/A | N/A | |-----------+----------------+---------------+---------------| | 4MB (A) | N/A | N/A | N/A | |-----------+----------------+---------------+---------------| | 4MB (B) | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | | | closed | closed | closed | |-----------+----------------+---------------+---------------| | 4MB (C) | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | | | closed | closed | closed | +------------------------------------------------------------+ +------------------------------------------------------------+ | DRAM SWITCH CONFIGURATION | |------------------------------------------------------------| | Size | SW1/6 | SW1/7 | SW1/8 | |----------------------+------------+------------+-----------| | 512KB | On | On | On | |----------------------+------------+------------+-----------| | 640KB | On | On | Off | |----------------------+------------+------------+-----------| | 640KB + 384KB | On | Off | On | |----------------------+------------+------------+-----------| | 640KB + 384KB (EMS) | On | Off | Off | |----------------------+------------+------------+-----------| | 640KB + 1408KB | Off | On | On | |----------------------+------------+------------+-----------| | 640KB + 1408KB (EMS) | Off | On | Off | |----------------------+------------+------------+-----------| | 640KB + 3456KB | Off | Off | On | |----------------------+------------+------------+-----------| | 640KB + 3456KB (EMS) | Off | Off | Off | +------------------------------------------------------------+ +------------------------------------------------------------+ | KEYBOARD BIOS PIN CONFIGURATION | |------------------------------------------------------------| | Pin | JP1 | JP2 | JP3 | JP4 | |---------+------------+------------+------------+-----------| | 23 | Open | Open | Closed | Open | |---------+------------+------------+------------+-----------| | 27 | Open | Closed | Open | Open | |---------+------------+------------+------------+-----------| | 30 | Open | Open | Open | Closed | |---------+------------+------------+------------+-----------| | 32 | Closed | Open | Open | Open | +------------------------------------------------------------+ +------------------------------------------------------------+ | MISCELLANEOUS TECHNICAL NOTE | |------------------------------------------------------------| | Note: The location of pin 1 is unidentified. | +------------------------------------------------------------+