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       # TULIP COMPUTERS
       
          DE/DS TULIP 486 ISA (TC39)
       
          Processor    80486SX/80486DX/80486DX2                          
          Processor    33/50(internal)/66(internal)MHz                   
          Speed        
          Chip Set     Texas Instruments                                 
          Max. Onboard 52MB                                              
          DRAM         
          Cache        256KB                                             
          BIOS         Phoenix                                           
          Dimensions   330mm x 218mm                                     
          I/O Options  Floppy drive interface, IDE interface, parallel   
                       port, serial ports (2), VGA feature connector,    
                       VGA port                                          
          NPU Options  None                                              
       
   IMG IMG 1
          
       
          +------------------------------------------------------------+
          |                        CONNECTIONS                         |
          |------------------------------------------------------------|
          | Purpose          | Location | Purpose           | Location |
          |------------------+----------+-------------------+----------|
          | Video feature    |   CN1    | VGA port          |   J10    |
          | connector        |          |                   |          |
          |------------------+----------+-------------------+----------|
          | Serial ports 1 & |   CN2    | LED flat cable,   |   J13    |
          | 2                |          | speaker & battery |          |
          |------------------+----------+-------------------+----------|
          | IDE interface    |    J2    | Parallel port     |   J19    |
          |------------------+----------+-------------------+----------|
          | Floppy drive     |    J3    | Chassis fan power |   J21    |
          | interface        |          |                   |          |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     DRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |  Expansion  | Expansion to:  |    Bank 0     |   Bank 1    |
          |    from:    |                |               |             |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      8MB       |  (1) 1M x 36  |    None     |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      12MB      |  (1) 1M x 36  | (1) 1M x 36 |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      12MB      |  (1) 2M x 36  |    None     |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      16MB      |  (1) 1M x 36  | (1) 2M x 36 |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      20MB      |  (1) 2M x 36  | (1) 2M x 36 |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      20MB      |  (1) 4M x 36  |    None     |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      24MB      |  (1) 1M x 36  | (1) 4M x 36 |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      28MB      |  (1) 2M x 36  | (1) 4M x 36 |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      36MB      |  (1) 4M x 36  | (1) 4M x 36 |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      36MB      |  (1) 8M x 36  |    None     |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      40MB      |  (1) 1M x 36  | (1) 8M x 36 |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      44MB      |  (1) 2M x 36  | (1) 8M x 36 |
          |-------------+----------------+---------------+-------------|
          |     4MB     |      52MB      |  (1) 4M x 36  | (1) 8M x 36 |
          |-------------+----------------+---------------+-------------|
          |     N/A     |      64MB      |  (1) 8M x 36  | (1) 8M x 36 |
          |------------------------------------------------------------|
          |      Note:4MB is internal memory and is not configurable.  |
          |      When 8M x 36 simms are installed, the 4MB internal    |
          |      memory is disabled.                                   |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                    CACHE CONFIGURATION                     |
          |------------------------------------------------------------|
          |         Expansion to:         |           Bank 0           |
          |-------------------------------+----------------------------|
          |            256 KB             |        (9) 32K x 8         |
          +------------------------------------------------------------+
       
          +------------------------------------------------------------+
          |                     VRAM CONFIGURATION                     |
          |------------------------------------------------------------|
          |     Size     |        Bank 0        |        Bank 1        |
          |--------------+----------------------+----------------------|
          |     1MB      |    (2) 256K X 16     |         None         |
          |--------------+----------------------+----------------------|
          |     2MB      |    (2) 256K X 16     |    (2) 256K X 16     |
          |------------------------------------------------------------|
          | Note:Bank 0 is factory installed and is not configurable.  |
          +------------------------------------------------------------+