(TXT) View Source
       
       # SIREX
       
          640KB TURBO SYSTEM
       
          Processor         8088                                         
          Processor Speed   4.77/8MHz                                    
          Chip Set          None                                         
          Max. onboard DRAM 640KB                                        
          SRAM Cache        None                                         
          BIOS              Phoenix                                      
          Dimensions        330mm x 218mm                                
          I/O Options       None                                         
          NPU Options       8087                                         
       
 (IMG) IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose         | Location | Purpose            | Location |
          |-----------------+----------+--------------------+----------|
          | Keylock         |    C1    | Speaker            |    C4    |
          |-----------------+----------+--------------------+----------|
          | Power LED       |    C2    | Reset switch       |    C5    |
          |-----------------+----------+--------------------+----------|
          | Turbo LED       |    C3    |                    |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 USER CONFIGURABLE SETTINGS                 |
          |------------------------------------------------------------|
          |           Function            | Jumper/Switch |  Position  |
          |-------------------------------+---------------+------------|
          | »  | CPU speed select low     |      J1       | pins 1 & 2 |
          |    | switchable via keyboard  |               |   closed   |
          |----+--------------------------+---------------+------------|
          |    | CPU speed select high    |      J1       | pins 3 & 4 |
          |    | switchable via keyboard  |               |   closed   |
          |----+--------------------------+---------------+------------|
          |    | CPU speed select         |      J1       | pins 5 & 6 |
          |    | normal/turbo switchable  |               |   closed   |
          |    | via keyboard             |               |            |
          |----+--------------------------+---------------+------------|
          | »  | Factory configured - do  | SW1/switch 1  |    Off     |
          |    | not alter                |               |            |
          |----+--------------------------+---------------+------------|
          | »  | NPU disabled             | SW1/switch 2  |     On     |
          |----+--------------------------+---------------+------------|
          |    | NPU enabled              | SW1/switch 2  |    Off     |
          |----+--------------------------+---------------+------------|
          | »  | Factory configured - do  | SW1/switch 3  |    Off     |
          |    | not alter                |               |            |
          |----+--------------------------+---------------+------------|
          | »  | Factory configured - do  | SW1/switch 4  |    Off     |
          |    | not alter                |               |            |
          |------------------------------------------------------------|
          | Note: The board can only use the normal/turbo mode with a  |
          | reprogrammed BIOS, this option may not be available on all |
          | boards.                                                    |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |  Size  |   Bank 0   |   Bank 1   |   Bank 2   |   Bank 3   |
          |--------+------------+------------+------------+------------|
          | 256KB  | (8) 41256  |    NONE    |    NONE    |    NONE    |
          |--------+------------+------------+------------+------------|
          | 512KB  | (8) 41256  | (8) 41256  |    NONE    |    NONE    |
          |--------+------------+------------+------------+------------|
          | 578KB  | (8) 41256  | (8) 41256  | (8) 4164KB |    NONE    |
          |--------+------------+------------+------------+------------|
          | 640KB  | (8) 41256  | (8) 41256  | (8) 4164KB | (8) 4164KB |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                  EPROM/ROM CONFIGURATION                   |
          |------------------------------------------------------------|
          | Switch |    2764    |   27128    |   8K ROM   |  32K ROM   |
          |        |   (U25A)   |   (U25B)   |   (U25A)   |   (U25C)   |
          |--------+------------+------------+------------+------------|
          | SW2/1  |     On     |     On     |     On     |    Off     |
          |--------+------------+------------+------------+------------|
          | SW2/2  |    Off     |    Off     |    Off     |     On     |
          |--------+------------+------------+------------+------------|
          | SW2/3  |     On     |    Off     |     On     |    Off     |
          |--------+------------+------------+------------+------------|
          | SW2/4  |    Off     |     On     |    Off     |     On     |
          |--------+------------+------------+------------+------------|
          | SW2/5  |     On     |     On     |    Off     |     On     |
          |--------+------------+------------+------------+------------|
          | SW2/6  |    Off     |    Off     |     On     |    Off     |
          |--------+------------+------------+------------+------------|
          | SW2/7  |     On     |     On     |    Off     |     On     |
          |--------+------------+------------+------------+------------|
          | SW2/8  |    Off     |    Off     |     On     |    Off     |
          |--------+------------+------------+------------+------------|
          | SW3/1  |    Off     |     On     |    Off     |     On     |
          |--------+------------+------------+------------+------------|
          | SW3/2  |     On     |    Off     |     On     |    Off     |
          |--------+------------+------------+------------+------------|
          | SW3/3  |    Off     |    Off     |    Off     |     On     |
          |--------+------------+------------+------------+------------|
          | SW3/4  |     On     |     On     |     On     |    Off     |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                   DISPLAY CONFIGURATION                    |
          |------------------------------------------------------------|
          |    Display Adapter     | SW1/5  | SW1/6  | SW1/7  | SW1/8  |
          |------------------------+--------+--------+--------+--------|
          |          None          |   On   |  Off   |  N/A   |  N/A   |
          |------------------------+--------+--------+--------+--------|
          | Color/Graphics (40x20) |  Off   |   On   |   On   |   On   |
          |------------------------+--------+--------+--------+--------|
          | Color/Graphics (80x25) |   On   |  Off   |   On   |   On   |
          |------------------------+--------+--------+--------+--------|
          |   Monochrome or Both   |  Off   |  Off   |   On   |   On   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                 FLOPPY DRIVE CONFIGURATION                 |
          |------------------------------------------------------------|
          |  Drives Installed  |       SW1/7       |       SW1/8       |
          |--------------------+-------------------+-------------------|
          |         1          |        On         |        On         |
          |--------------------+-------------------+-------------------|
          |         2          |        Off        |        On         |
          |--------------------+-------------------+-------------------|
          |         3          |        On         |        Off        |
          |--------------------+-------------------+-------------------|
          |         4          |        Off        |        Off        |
          +------------------------------------------------------------+