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OrCAD LOGIC COMPILER  v2.01 N 12/09/94  (Source file .\PLD\#0202.PLD)

  1  || FILE:   #0202.PLD
  2  || PROJ:   20120601        
  3  || PART:   G26CV12-#0202
  4  ||
  5  || DEV :   GAL26CV12
  6  ||
  7  ||         DESC:   DECODER I/O
  8  ||
  9  |
 10  |GAL26CV12
 11  |
 12  || INPUT
 13  |  1:A8, 2:A9, 3:A10, 4:A11, 5:A12, 6:A13, 8:A14, 9:A15, 10:A16, 
 14  | 11:A17, 12:A18, 13:A19, 14:A20, 15:A21, 16:A22, 17:A23,
 15  | 27:VMA, 28:A7, 26:VDA,
 16  || OUTPUT 
 17  |  18:ME0, 19:ME1, 20:DBE, 22:DBX, 23:IO0, 24:IO1, 25:IO2
 18  |
 19  | ACTIVE-LOW: ME0, ME1, DBE, DBX, IO0, IO1, IO2
 20  |
 21  |
 22  | SIGNATURE: "0202   "
 23  |
 24  || --------------------------------------------------------
 25  ||
 26  || /IO0 -> 00FC00 - 00FC7F
 27  || /IO1 -> 00FC80 - 00FCFF
 28  || /IO2 -> 00FD00 - 00FDFF
 29  || /ME0 -> 100000 - EFFFFF (RAM)
 30  || /ME1 -> 010000 - 013FFF (RAM 16K)
 31  || /DBE -> internal data bus enable
 32  || /DBX -> external data bus enable
 33  ||
 34  || --------------------------------------------------------
 35  ||
 36  |  BANK0 = (A23' & A22' & A21' & A20' & A19' & A18' & A17' & A16' & VMA')
 37  |  BANK1 = (A23' & A22' & A21' & A20' & A19' & A18' & A17' & A16  & VMA')
 38  || --------------------------------------------------------
 39  ||
 40  || IOS -> 00FC00 - 00FDFF 
 41  |  IOS  = (BANK0 & A15 & A14 & A13 & A12 & A11 & A10 & A9' & VDA)
 42  |  IO0A = (IOS & A8' & A7')
 43  |  IO1A = (IOS & A8' & A7 )
 44  |  IO2A = (IOS & A8)
 45  |  IO0 = IO0A
 46  |  IO1 = IO1A
 47  |  IO2 = IO2A
 48  |  CS1A = (A23' & A22' & A21' & A20' & A19 & VMA')
 49  |  CSHA = (A23 & A22 & A21 & A20 & A19 & VMA')
 50  || BANK $01 : $010000 - $01FFFF
 51  || BANK1 = (A23' & A22' & A21' & A20' & A19' & A18' & A17' & A16  & VMA')
 52  |  ME1A  = (BANK1 & A15' & A14')
 53  |  ME1 = ME1A
 54  ||
 55  || --------------------------------------------------------


 56  || RAM SELECT $100000 - $EFFFFF
 57  ||
 58  || $100000 - $1FFFFF (1Mb)
 59  |  BLK1 = (A23' & A22' & A21' & A20 & VMA')
 60  || $200000 - $3FFFFF (2Mb)
 61  |  BLK2 = (A23' & A22' & A21 & VMA')
 62  || $400000 - $7FFFFF (4Mb)
 63  |  BLK3 = (A23' & A22  & VMA')
 64  || $800000 - $BFFFFF (4Mb)
 65  |  BLK4 = (A23  & A22' & VMA')
 66  || $C00000 - $DFFFFF (2Mb)
 67  |  BLK5 = (A23  & A22  & A21' & VMA')
 68  || $E00000 - $EFFFFF (1Mb)
 69  |  BLK6 = (A23  & A22  & A21  & A20' & VMA')
 70  |  ME0A = (BLK1 # BLK2 # BLK3 # BLK4 # BLK5 # BLK6)
 71  |  ME0 = ME0A
 72  ||
 73  || --------------------------------------------------------
 74  || INTERNAL DATA BUS ENABLE
 75  || FIRST 16 BANKS OF RAM (1Mb), BUT NOT CX1, AND LAST 16 BANKS
 76  || PLUS IO0
 77  ||
 78  || 16K BLOCK $014000 - $017FFF
 79  |  BR1 = (BANK1 & A15' & A14)
 80  || 32K BLOCK $018000 - $01FFFF
 81  |  BR2 = (BANK1 & A15)
 82  ||
 83  || BANK $01 RAM SELECT
 84  |  CS0B = (BR1 # BR2)
 85  ||
 86  || BANK $02 & $03 : $020000 - $03FFFF (128K BLOK)
 87  |  CS0C = (A23' & A22' & A21' & A20' & A19' & A18' & A17  & VMA')
 88  ||
 89  || BANK $03 - $07 : $040000 - $07FFFF (256K BLOK)
 90  |  CS0D = (A23' & A22' & A21' & A20' & A19' & A18 & VMA')
 91  ||
 92  || BANK $00 - $07 RAM SELECTION (512K BLOCK)
 93  |  CS0A = (BANK0 # CS0B # CS0C # CS0D)
 94  || BANKF0: $F00000 - $F7FFFF
 95  |  BANKF0 = (A23 & A22 & A21 & A20 & A19' & VMA')
 96  | DBE = (CS0A # CS1A # BANKF0 # CSHA # IO0A)
 97  ||
 98  || EXTERNAL DATA BUS ENABLE
 99  ||
100  |  DBX = (ME0A # ME1A # IO1A # IO2A)



I200  No fatal errors found in source code (logic phase).
I201  No warnings.


I202  1/29/18  8:26 pm  (Monday)
I203  Memory usage 114K
I204  Elapsed time 1 second

OrCAD DEVICE FITTER  v2.01   12/09/94  (Source file .\PLD\#0202.PLA)




RESOLVED EXPRESSIONS (Reduction 0)

Signal name      Row   Terms

IO0               38   A8' A9' A10  A11  A12  A13  A14  A15  A16' A17' A18' 
                       A19' A20' A21' A22' A23' VMA' A7' VDA  

DBE               62   A8' A9' A10  A11  A12  A13  A14  A15  A16' A17' A18' 
                       A19' A20' A21' A22' A23' VMA' A7' VDA  
                  63   A14  A15' A16  A17' A18' A19' A20' A21' A22' A23' VMA' 
                  64   A15  A16  A17' A18' A19' A20' A21' A22' A23' VMA' 
                  65   A16' A17' A18' A19' A20' A21' A22' A23' VMA' 
                  66   A17  A18' A19' A20' A21' A22' A23' VMA' 
                  67   A18  A19' A20' A21' A22' A23' VMA' 
                  68   A19' A20  A21  A22  A23  VMA' 
                  69   A19  A20' A21' A22' A23' VMA' 
                  70   A19  A20  A21  A22  A23  VMA' 

IO1               29   A8' A9' A10  A11  A12  A13  A14  A15  A16' A17' A18' 
                       A19' A20' A21' A22' A23' VMA' A7  VDA  

DBX               49   A8' A9' A10  A11  A12  A13  A14  A15  A16' A17' A18' 
                       A19' A20' A21' A22' A23' VMA' A7  VDA  
                  50   A8  A9' A10  A11  A12  A13  A14  A15  A16' A17' A18' 
                       A19' A20' A21' A22' A23' VMA' VDA  
                  51   A14' A15' A16  A17' A18' A19' A20' A21' A22' A23' VMA' 
                  52   A20' A21  A22  A23  VMA' 
                  53   A20  A21' A22' A23' VMA' 
                  54   A21' A22  A23  VMA' 
                  55   A21  A22' A23' VMA' 
                  56   A22' A23  VMA' 
                  57   A22  A23' VMA' 

IO2               20   A8  A9' A10  A11  A12  A13  A14  A15  A16' A17' A18' 
                       A19' A20' A21' A22' A23' VMA' VDA  

ME1               75   A14' A15' A16  A17' A18' A19' A20' A21' A22' A23' VMA' 

ME0               86   A20' A21  A22  A23  VMA' 
                  87   A20  A21' A22' A23' VMA' 
                  88   A21' A22  A23  VMA' 
                  89   A21  A22' A23' VMA' 
                  90   A22' A23  VMA' 
                  91   A22  A23' VMA' 




SIGNAL ASSIGNMENT
                                      Rows
 Pin    Signal name   Column     --------------    Activity
                                 Beg Avail Used

  1.     A8              0        -    -    -        High    (Clock)
  2.     A9              4        -    -    -        High     
  3.     A10             8        -    -    -        High     
  4.     A11            12        -    -    -        High     
  5.     A12            16        -    -    -        High     
  6.     A13            20        -    -    -        High     
  8.     A14            24        -    -    -        High     
  9.     A15            28        -    -    -        High     
 10.     A16            32        -    -    -        High     
 11.     A17            36        -    -    -        High     
 12.     A18            40        -    -    -        High     
 13.     A19            44        -    -    -        High     
 14.     A20            48        -    -    -        High     
 15.     A21            50      112    9    0        High    (Registered)
 16.     A22            46      103    9    0        High    (Registered)
 17.     A23            42       94    9    0        High    (Registered)
 18.     ME0            39       85    9    6        Low     (Three-state)
 19.     ME1            35       74   11    1        Low     (Three-state)
 20.     DBE            31       61   13    9        Low     (Three-state)
 22.     DBX            27       48   13    9        Low     (Three-state)
 23.     IO0            23       37   11    1        Low     (Three-state)
 24.     IO1            19       28    9    1        Low     (Three-state)
 25.     IO2            15       19    9    1        Low     (Three-state)
 26.     VDA            10       10    9    0        High    (Registered)
 27.     VMA             6        1    9    0        High    (Registered)
 28.     A7              2        -    -    -        High     
 29.     -               -        0    1    0                 
 30.     -               -      121    1    0                 
                                    ---- ----
                                     122   28  (23%)


I200  No fatal errors found in source code (device phase).
I201  No warnings.



OrCAD DEVICE
Type:       GAL26CV12
*
QP28* QF6432* QV1024*
F0*
L0988 1111111111111111111111111111111111111111111111111111*
L1040 0111101001010111011101110111011110111011101010101010*
L1456 1111111111111111111111111111111111111111111111111111*
L1508 1001101001010111011101110111011110111011101010101010*
L1924 1111111111111111111111111111111111111111111111111111*
L1976 1010101001010111011101110111011110111011101010101010*
L2496 1111111111111111111111111111111111111111111111111111*
L2548 1001101001010111011101110111011110111011101010101010*
L2600 0111101001010111011101110111011110111011101010101010*
L2652 1111111011111111111111111011101101111011101010101010*
L2704 1111111011111111111111111111111111111111110111011001*
L2756 1111111011111111111111111111111111111111111011100110*
L2808 1111111011111111111111111111111111111111110111011110*
L2860 1111111011111111111111111111111111111111111011101101*
L2912 1111111011111111111111111111111111111111110111101111*
L2964 1111111011111111111111111111111111111111111011011111*
L3172 1111111111111111111111111111111111111111111111111111*
L3224 1010101001010111011101110111011110111011101010101010*
L3276 1111111011111111111111110111101101111011101010101010*
L3328 1111111011111111111111111111011101111011101010101010*
L3380 1111111011111111111111111111111110111011101010101010*
L3432 1111111011111111111111111111111111110111101010101010*
L3484 1111111011111111111111111111111111111111011010101010*
L3536 1111111011111111111111111111111111111111110110010101*
L3588 1111111011111111111111111111111111111111111001101010*
L3640 1111111011111111111111111111111111111111110101010101*
L3848 1111111111111111111111111111111111111111111111111111*
L3900 1111111011111111111111111011101101111011101010101010*
L4420 1111111111111111111111111111111111111111111111111111*
L4472 1111111011111111111111111111111111111111110111011001*
L4524 1111111011111111111111111111111111111111111011100110*
L4576 1111111011111111111111111111111111111111110111011110*
L4628 1111111011111111111111111111111111111111111011101101*
L4680 1111111011111111111111111111111111111111110111101111*
L4732 1111111011111111111111111111111111111111111011011111*
L6344 1111010101010101011111110011000000110010001100000011*
L6396 001000100000001000000010000000100000*
CC3C8*

I202  1/29/18  8:26 pm  (Monday)
I203  Memory usage 10K
I204  Elapsed time 1 second