TYAN COMPUTER CORPORATION
=========================

   S1894SLA (ZX)

   Device Type      Mainboard                                     
   Processor        Pentium II/Celeron                            
   Processor Speed  233/266/300/333/350/400/450MHz                
   Chip Set         Intel 440ZX                                   
   Maximum Onboard  256MB (SDRAM supported)                       
   Memory           
   Audio Chip Set   Ensoniq                                       
   Cache            0/128/256/512KB (located on the CPU)          
   BIOS             Award                                         
   Dimensions       305mm x 244mm                                 
   I/O Options      32-bit PCI slots (3), floppy drive interface, 
                    game/MIDI port, green PC connector, IDE       
                    interfaces (2), parallel port, PS/2 mouse     
                    port, serial ports (2), IR connector, USB     
                    connectors (2), ATX power connector, AGP      
                    slot, line in, line out, microphone in, audio 
                    in - CD-ROMs (2), wake on LAN connector       

<gopher://bitreich.org/I/th99/m/S-T/35959-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   | Purpose          | Location | Purpose      |   Location    |
   |------------------+----------+--------------+---------------|
   | AGP slot         |   AGP    | IDE          |     CN11      |
   |                  |          | interface 2  |               |
   |------------------+----------+--------------+---------------|
   | ATX power        |   ATX    | IDE          |     CN12      |
   | connector        |          | interface 1  |               |
   |------------------+----------+--------------+---------------|
   | Chassis fan      |    C1    | Floppy drive |     CN13      |
   | power            |          | interface    |               |
   |------------------+----------+--------------+---------------|
   | Chassis fan      |    C2    | Wake on LAN  |     CON3      |
   | power            |          | connector    |               |
   |------------------+----------+--------------+---------------|
   | Chassis fan      |    C3    | Chassis      |      J7       |
   | power            |          | intrusion    |               |
   |------------------+----------+--------------+---------------|
   | Game/MIDI port   |   CN1    | IDE          | J10/pins 1 -3 |
   |                  |          | interface    |               |
   |                  |          | LED          |               |
   |------------------+----------+--------------+---------------|
   | Microphone in    |   CN2    | Power LED    | J10/pins 2 &  |
   |                  |          |              |       4       |
   |------------------+----------+--------------+---------------|
   | Line in          |   CN3    | Reset switch | J10/pins 5 &  |
   |                  |          |              |  7 or 7 & 8   |
   |------------------+----------+--------------+---------------|
   | Line out         |   CN4    | Soft off     | J10/pins 6 &  |
   |                  |          | power supply |   8, 5 & 6    |
   |------------------+----------+--------------+---------------|
   | Serial port 2    |   CN5    | Audio in -   |      J11      |
   |                  |          | CD-ROM       |               |
   |------------------+----------+--------------+---------------|
   | Serial port 1    |   CN6    | Audio in -   |      J13      |
   |                  |          | CD-ROM       |               |
   |------------------+----------+--------------+---------------|
   | Parallel port    |   CN7    | Speaker      |      J16      |
   |------------------+----------+--------------+---------------|
   | USB connector 1  |   CN8    | Green PC     |     JP16      |
   |                  |          | connector    |               |
   |------------------+----------+--------------+---------------|
   | USB connector 2  |   CN9    | Power fan    |     JP23      |
   |                  |          | power        |               |
   |------------------+----------+--------------+---------------|
   | PS/2 mouse port  |   CN10   | 32-bit PCI   |   PC1 - PC3   |
   |                  |          | slots        |               |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 USER CONFIGURABLE SETTINGS                 |
   |------------------------------------------------------------|
   |              Function               | Label |   Position   |
   |-------------------------------------+-------+--------------|
   |>> | CMOS memory normal operation    |  JP2  |  Pins 1 & 2  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | CMOS memory clear               |  JP2  |  Pins 2 & 3  |
   |   |                                 |       |    closed    |
   |---+---------------------------------+-------+--------------|
   |   | On board sound enabled          | JP17  |     Open     |
   |---+---------------------------------+-------+--------------|
   |   | On board sound disabled         | JP17  |    Closed    |
   |---+---------------------------------+-------+--------------|
   |>> | Factory configured - do not     | JP22  | Unidentified |
   |   | alter                           |       |              |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DIMM CONFIGURATION                     |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |       8MB        |    (1) 1M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |       16MB       |    (1) 2M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |       16MB       |    (1) 1M x 64     |    (1) 1M x 64     |
   |------------------+--------------------+--------------------|
   |       24MB       |    (1) 2M x 64     |    (1) 1M x 64     |
   |------------------+--------------------+--------------------|
   |       32MB       |    (1) 4M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |       32MB       |    (1) 2M x 64     |    (1) 2M x 64     |
   |------------------+--------------------+--------------------|
   |       40MB       |    (1) 4M x 64     |    (1) 1M x 64     |
   |------------------+--------------------+--------------------|
   |       48MB       |    (1) 4M x 64     |    (1) 2M x 64     |
   |------------------+--------------------+--------------------|
   |       64MB       |    (1) 8M x 64     |        None        |
   |------------------+--------------------+--------------------|
   |       64MB       |    (1) 4M x 64     |    (1) 4M x 64     |
   |------------------+--------------------+--------------------|
   |       72MB       |    (1) 8M x 64     |    (1) 1M x 64     |
   |------------------+--------------------+--------------------|
   |       80MB       |    (1) 8M x 64     |    (1) 2M x 64     |
   |------------------+--------------------+--------------------|
   |       96MB       |    (1) 8M x 64     |    (1) 4M x 64     |
   |------------------+--------------------+--------------------|
   |      128MB       |    (1) 16M x 64    |        None        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 DIMM CONFIGURATION (CON'T)                 |
   |------------------------------------------------------------|
   |       Size       |       Bank 0       |       Bank 1       |
   |------------------+--------------------+--------------------|
   |      128MB       |    (1) 8M x 64     |    (1) 8M x 64     |
   |------------------+--------------------+--------------------|
   |      136MB       |    (1) 16M x 64    |    (1) 1M x 64     |
   |------------------+--------------------+--------------------|
   |      144MB       |    (1) 16M x 64    |    (1) 2M x 64     |
   |------------------+--------------------+--------------------|
   |      160MB       |    (1) 16M x 64    |    (1) 4M x 64     |
   |------------------+--------------------+--------------------|
   |      192MB       |    (1) 16M x 64    |    (1) 8M x 64     |
   |------------------+--------------------+--------------------|
   |      256MB       |    (1) 16M x 64    |    (1) 16M x 64    |
   |------------------------------------------------------------|
   |      Note: Board accepts SDRAM memory.                     |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CACHE CONFIGURATION                     |
   |------------------------------------------------------------|
   |      Note: 256KB/512KB cache is located on the Pentium II  |
   |      CPU. 128KB cache is located on the Celeron 300A & 333 |
   |      CPU.                                                  |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                    CPU SPEED SELECTION                     |
   |------------------------------------------------------------|
   |CPU speed|Clock speed|Multiplier| JP10 | JP11 | JP12 | JP13 |
   |---------+-----------+----------+------+------+------+------|
   | 233MHz  |   66MHz   |   3.5x   |Closed| Open | Open |Closed|
   |---------+-----------+----------+------+------+------+------|
   | 266MHz  |   66MHz   |    4x    | Open |Closed|Closed|Closed|
   |---------+-----------+----------+------+------+------+------|
   | 300MHz  |   66MHz   |   4.5x   | Open |Closed| Open |Closed|
   |---------+-----------+----------+------+------+------+------|
   | 333MHz  |   66MHz   |    5x    | Open | Open |Closed|Closed|
   |---------+-----------+----------+------+------+------+------|
   | 350MHz  |  100MHz   |   3.5x   |Closed| Open | Open |Closed|
   |---------+-----------+----------+------+------+------+------|
   | 400MHz  |  100MHz   |    4x    | Open |Closed|Closed|Closed|
   |---------+-----------+----------+------+------+------+------|
   | 450MHz  |  100MHz   |   4.5x   | Open |Closed| Open |Closed|
   +------------------------------------------------------------+