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       # ADVANCED DIGITAL CORPORATION
       
          PC II
       
          Processor                    80188 (2)                         
          Processor Speed              8MHz                              
          Video Chipset                Unidentified                      
          Chipset                      Unidentified                      
          Maximum Onboard Memory       1MB DRAM (512KB per processor)    
          BIOS                         Unidentified                      
          Dimensions                   336.6 x 111.1mm                   
          I/O Options                  Video ports (1 per processor)     
          Video Types Supported        Monochrome                        
          Highest Resolution Supported Text only                         
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function        | Label  |     Function      | Label |
          |-----------------------+--------+-------------------+-------|
          | Video and keyboard    |   J1   | 12V DC power out  |  P1A  |
          | for machine 1         |        |                   |       |
          |-----------------------+--------+-------------------+-------|
          | Video and keyboard    |   J2   |                   |       |
          | for machine 2         |        |                   |       |
          |------------------------------------------------------------|
          | Note:Standard video and keyboard connectors are provided   |
          | on an external adapter box.                                |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |               Function                | Label |  Position  |
          |---------------------------------------+-------+------------|
          | » | Factory configured - do not alter | SWA/A | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Factory configured - do not alter | SWA/B | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Factory configured - do not alter | SWA/C | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Factory configured - do not alter | SWA/D | Pins 1 & 2 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Factory configured - do not alter | SWA/E | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Factory configured - do not alter | SWA/F | Pins 2 & 3 |
          |   |                                   |       |   closed   |
          |---+-----------------------------------+-------+------------|
          | » | Interrupt terminator enabled      | SWD/5 |     On     |
          |---+-----------------------------------+-------+------------|
          |   | Interrupt terminator disabled     | SWD/5 |    Off     |
          |---+-----------------------------------+-------+------------|
          | » | Factory configured - do not alter | SWD/6 |    Off     |
          |---+-----------------------------------+-------+------------|
          | » | Factory configured - do not alter | SWD/7 |    Off     |
          |---+-----------------------------------+-------+------------|
          | » | Factory configured - do not alter | SWD/8 |    Off     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 BASE I/O ADDRESS SELECTION                 |
          |------------------------------------------------------------|
          | Setting |SWB/1 |SWB/2 |SWB/3 |SWB/4|SWB/5|SWB/6|SWB/7|SWB/8|
          |---------+------+------+------+-----+-----+-----+-----+-----|
          |   |200h |  On  |  On  |  On  | On  | On  | On  | On  | On  |
          |---+-----+------+------+------+-----+-----+-----+-----+-----|
          |   |202h | Off  |  On  |  On  | On  | On  | On  | On  | On  |
          |---+-----+------+------+------+-----+-----+-----+-----+-----|
          |   |204h |  On  | Off  |  On  | On  | On  | On  | On  | On  |
          |---+-----+------+------+------+-----+-----+-----+-----+-----|
          |   |206h | Off  | Off  |  On  | On  | On  | On  | On  | On  |
          |---+-----+------+------+------+-----+-----+-----+-----+-----|
          |   |208h |  On  |  On  | Off  | On  | On  | On  | On  | On  |
          |---+-----+------+------+------+-----+-----+-----+-----+-----|
          |»  |230h |  On  |  On  |  On  | Off | Off | On  | On  | On  |
          |---+-----+------+------+------+-----+-----+-----+-----+-----|
          |   |3F6h | Off  | Off  |  On  | Off | Off | Off | Off | Off |
          |---+-----+------+------+------+-----+-----+-----+-----+-----|
          |   |3F8h |  On  |  On  | Off  | Off | Off | Off | Off | Off |
          |---+-----+------+------+------+-----+-----+-----+-----+-----|
          |   |3FAh | Off  |  On  | Off  | Off | Off | Off | Off | Off |
          |---+-----+------+------+------+-----+-----+-----+-----+-----|
          |   |3FCh |  On  | Off  | Off  | Off | Off | Off | Off | Off |
          |---+-----+------+------+------+-----+-----+-----+-----+-----|
          |   |3FEh | Off  | Off  | Off  | Off | Off | Off | Off | Off |
          |------------------------------------------------------------|
          |Note: A total of 256 base address settings are available.   |
          |The switches are a binary representation of the decimal     |
          |memory addresses. SWB/8 is the Most Significant Bit and     |
          |switch SWB/1 is the Least Significant Bit. The switches have|
          |the following decimal values: SWB/1=2, SWB/2=4, SWB/3=8,    |
          |SWB/4=16, SWB/5=32, SWB/6=64, SWB/7=128, SWB/8=256. Turn off|
          |the switches and add the values of the switches that are off|
          |to 512 to obtain the correct memory address. (Off=1, On=0)  |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     SHARED RAM ADDRESS                     |
          |------------------------------------------------------------|
          | Setting  |SWC/1 |SWC/2 |SWC/3|SWC/4|SWC/5|SWC/6|SWC/7|SWC/8|
          |----------+------+------+-----+-----+-----+-----+-----+-----|
          |  |00000h |  On  |  On  | On  | On  | On  | On  | On  | On  |
          |--+-------+------+------+-----+-----+-----+-----+-----+-----|
          |  |01000h | Off  |  On  | On  | On  | On  | On  | On  | On  |
          |--+-------+------+------+-----+-----+-----+-----+-----+-----|
          |  |02000h |  On  | Off  | On  | On  | On  | On  | On  | On  |
          |--+-------+------+------+-----+-----+-----+-----+-----+-----|
          |  |03000h | Off  | Off  | On  | On  | On  | On  | On  | On  |
          |--+-------+------+------+-----+-----+-----+-----+-----+-----|
          |  |04000h |  On  |  On  | Off | On  | On  | On  | On  | On  |
          |--+-------+------+------+-----+-----+-----+-----+-----+-----|
          |» |C0000h |  On  |  On  | On  | On  | On  | On  | Off | Off |
          |--+-------+------+------+-----+-----+-----+-----+-----+-----|
          |  |FB000h | Off  | Off  | On  | Off | Off | Off | Off | Off |
          |--+-------+------+------+-----+-----+-----+-----+-----+-----|
          |  |FC000h |  On  |  On  | Off | Off | Off | Off | Off | Off |
          |--+-------+------+------+-----+-----+-----+-----+-----+-----|
          |  |FD000h | Off  |  On  | Off | Off | Off | Off | Off | Off |
          |--+-------+------+------+-----+-----+-----+-----+-----+-----|
          |  |FE000h |  On  | Off  | Off | Off | Off | Off | Off | Off |
          |--+-------+------+------+-----+-----+-----+-----+-----+-----|
          |  |FF000h | Off  | Off  | Off | Off | Off | Off | Off | Off |
          |------------------------------------------------------------|
          |Note: A total of 256 base address settings are available.   |
          |The switches are a binary representation of the decimal     |
          |memory addresses. SWC/8 is the Most Significant Bit and     |
          |switch SWC/1 is the Least Significant Bit. The switches have|
          |the following decimal values: SWC/8=524,288, SWC/7=262,144, |
          |SWC/6=131,072, SWC/5=65,536, SWC/4=32,768, SWC/3=16,384,    |
          |SWC/2=8,192, SWC/1=4,096. Turn off the switches and add the |
          |values of the switches that are off to obtain the correct   |
          |memory address. (Off=1, On=0)                               |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    INTERRUPT SELECTION                     |
          |------------------------------------------------------------|
          |   Setting    |   SWD/1   |   SWD/2   |  SWD/3   |  SWD/4   |
          |--------------+-----------+-----------+----------+----------|
          |   |   IRQ2   |    On     |    Off    |   Off    |   Off    |
          |---+----------+-----------+-----------+----------+----------|
          | » |   IRQ3   |    Off    |    On     |   Off    |   Off    |
          |---+----------+-----------+-----------+----------+----------|
          |   |   IRQ4   |    Off    |    Off    |    On    |   Off    |
          |---+----------+-----------+-----------+----------+----------|
          |   |   IRQ5   |    Off    |    Off    |   Off    |    On    |
          +------------------------------------------------------------+
       
          PC II (SERIAL DAUGHTERBOARD)
       
          Processor         80188 (2)                                    
          Processor Speed   8MHz                                         
          I/O Options       Serial ports (1 per processor)               
       
   IMG IMG 2
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          |       Function        | Label |      Function      | Label |
          |-----------------------+-------+--------------------+-------|
          | Serial port for       |  P2   | Header to main     |  U1   |
          | machine 1             |       | board CPU socket   |       |
          |                       |       | (on back of board) |       |
          |-----------------------+-------+--------------------+-------|
          | Serial port for       |  P3   | Header to main     |  U2   |
          | machine 2             |       | board CPU socket   |       |
          |                       |       | (on back of board) |       |
          |-----------------------+-------+--------------------+-------|
          | 12V DC power in from  |  P1B  |                    |       |
          | main board (on back   |       |                    |       |
          | of board)             |       |                    |       |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |               MISCELLANEOUS TECHNICAL NOTES                |
          |------------------------------------------------------------|
          | Remove the CPUs from the main card, and install them into  |
          | the daughterboard's sockets.                               |
          +------------------------------------------------------------+