global.doc

GAL开发工具

                                                                     Page 1
ABEL(tm) 3.00a  -  Document Generator              7-Apr-94 01:16 AM
Equations for Module _GLOBAL

Device GLOBAL


- Reduced Equations:

    ~EA0 = !(~DA0 & RAS 
            # A12 & A16B & QD & !RAS 
            # !MODE1 & !QD & !R0 & !RAS & !W7 
            # !A1 & !A16B & QD & !RAS 
            # !M0 & MODE1 & !QD & !RAS);
          

    enable ~EA0 = (MODE0);

    ~DA0 = !(!M7 & !MODE1 & !QD & !R0 & W7 
            # !A1 & A16B & QD 
            # !M7 & !MODE1 & !QD & !W2 & !W7 
            # A12 & !A16B & QD 
            # MODE1 & !QD & !R0);
          

    ~EA1 = !(~DA1 & RAS 
            # !M7 & !MODE1 & !QD & !RAS & !W6 & W7 
            # A16B & !B & QD & !RAS 
            # !M7 & !MODE1 & !QD & !R4 & !RAS & !W7 
            # !A16B & !A5 & QD & !RAS 
            # !M4 & MODE1 & !QD & !RAS);
          

    enable ~EA1 = (MODE0);

    ~DA1 = !(!M7 & !MODE1 & !QD & !R4 & W7 
            # A16B & !A5 & QD 
            # !M7 & !MODE1 & !QD & !W6 & !W7 
            # !A16 & !A16B & QD 
            # MODE1 & !QD & !R4);
          



                                                                     Page 2
ABEL(tm) 3.00a  -  Document Generator              7-Apr-94 01:16 AM
Chip diagram for Module _GLOBAL

Device GLOBAL


                            P20V8C

                 ----------\       /----------
                 |          \     /          |
                 |           -----           |
           MODE0 |  1                    24  | Vcc             
                 |                           |
              A1 |  2                    23  | MODE1           
                 |                           |
              A5 |  3                    22  | ~EA1            
                 |                           |
             A12 |  4                    21  | W7              
                 |                           |
             A16 |  5                    20  | A16B            
                 |                           |
               B |  6                    19  | QD              
                 |                           |
              R0 |  7                    18  | ~DA1            
                 |                           |
              R4 |  8                    17  | ~DA0            
                 |                           |
              M0 |  9                    16  | W6              
                 |                           |
              M4 | 10                    15  | ~EA0            
                 |                           |
              M7 | 11                    14  | W2              
                 |                           |
             GND | 12                    13  | RAS             
                 |                           |
                 |                           |
                 -----------------------------


end of module _GLOBAL