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||      FILE:   #9006.PLD
||      PROJ:   20130517        
||      PART:   G16V8-#9006
||
||      DEV :   GAL16V8
||
||      DESC:   DPRAM CONTROL
||
|
|GAL16V8A
|
|| INPUT
|  1:A10, 2:A11, 3:A12, 4:CX1, 5:RW, 6:PHI2, 7:RES, 8:WP, 9:REN, 11:X,
|| OUTPUT 
|  12:RAMN, 13:CE0, 14:CE1, 15:CE2, 16:Y, 17:VRMN, 18:RS, 19:INH
|
||
|  ACTIVE-LOW: CE0, CE1, CE2, RAMN, VRMN
|
|  PROPERTY: "SIMPLE"
|
|  SIGNATURE: "9006    "
|
|| --------------------------------------------------------
|| RAM0, RAM1, RAM2
|  RAM0 = (CX1' & A12' & A11')
|  RAM1 = (CX1' & A12' & A11)
|  RAM2 = (CX1' & A12  & A11' & A10')
|  VRAM = (RAM0 # RAM1 # RAM2)
|  CE0R = (RAM0 & RW  & PHI2)
|  CE0W = (RAM0 & RW' & REN')
|  CE1R = (RAM1 & RW  & PHI2)
|  CE1W = (RAM1 & RW' & REN')
|  CE2R = (RAM2 & RW  & PHI2)
|  CE2W = (RAM2 & RW' & REN')
|  CE0  = (CE0R # CE0W)
|  CE1  = (CE1R # CE1W)
|  CE2  = (CE2R # CE2W)
|  INH  = (VRAM & RW' & REN')
|  RAMN = ((VRAM & RW  & PHI2) # (VRAM & RW' & WP))
|  Y = X
|  VRMN = (VRAM & RW')
|  RS = RES