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|| FILE: #0007.PLD|| PROJ: 20120605|| PART: G26CV12-#0007|||| DEV : GAL26CV12|||| DESC: DECODER MEMORIA DI SISTEMA||||GAL26CV12||| INPUT| 1:MA19, 2:MA20, 3:CS0, 4:CS2, 5:CS3, 6:CSF, 8:CX1, 9:PHI0, 10:RW,| 11:PHI2, 12:MW0, 13:-, 14:-, 28:CPU,|| OUTPUT| 15:G, 16:CE0, 17:CE2, 18:CE3, 19:CEF, 20:WE, 22:RD, 23:CE4,| 24:CE5, 25:CE6, 26:CE7, 27:CE8|| ACTIVE-LOW: G, CE0, CE2, CE3, CEF, WE, RD, CE4, CE5, CE6, CE7, CE8||| SIGNATURE: "0007 "||||| BUFFER 2MB - ABILITATO DA /CX1| CE4 = (CX1' & PHI2 & MA20' & MA19')| CE5 = (CX1' & PHI2 & MA20' & MA19)| CE6 = (CX1' & PHI2 & MA20 & MA19')| CE7 = (CX1' & PHI2 & MA20 & MA19)|||| RAM 512K PER CPU 8 BIT - ABILITATA DA /CS0| CE8 = (CS0' & PHI2 & CPU')|||| RAM 128K PER CPU 16 BIT - ABILITATA DA /CS0| CE0 = (CS0' & PHI2 & CPU)|||| RAM 128K - ABILITATE DA /CS2 e /CS3| CE2 = (CS2' & PHI2)| CE3 = (CS3' & PHI2)|||| FLASH 512K (16 bit) / 256K (8 bit - A18 = 0) ABILITATA DA /CSF| CEF = (CSF' & PHI2)|||| BUFFER DATI| MS = (CS0' # CS2' # CS3' # CSF' # CX1')| G = (MS & PHI2)|||| READ & WRITE ENABLE| RD = (MS & PHI2 & RW)| WRA = (MS & PHI2 & RW' & MW0)| WRB = (MS & PHI0 & RW' & MW0')| WE = (WRA # WRB)