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Rev | Author | Line No. | Line |
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1 | - | 1 | || GAL16V8 - CODE #9997 |
2 | || |
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3 | || MASTER BUS DECODER I/O |
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4 | | |
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5 | |GAL16V8A |
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6 | | |
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7 | || INPUT |
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8 | | 1:A0, 2:A1, 3:A2, 4:-, 5:-, 6:-, 7:MSE, 8:RW, 9:IO, |
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9 | | 11:RES, |
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10 | || OUTPUT |
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11 | | 12:SEM, 13:ENN, 14:ENI, 15:ENR, 16:CLN, 17:CLI, 18:CLR, 19:RDS |
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12 | | |
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13 | | ACTIVE-LOW: CLN, CLI, CLR, RDS |
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14 | | |
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15 | | PROPERTY: "SIMPLE" |
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16 | | |
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17 | | R0 = RES & MSE' & IO' & A2' & A1' |
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18 | | R2 = RES & MSE' & IO' & A2' & A1 & A0' |
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19 | | R3 = RES & MSE' & IO' & A2' & A1 & A0 |
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20 | | R4 = RES & MSE' & IO' & A2 & A1' & A0' |
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21 | | R5 = RES & MSE' & IO' & A2 & A1' & A0 |
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22 | | R6 = RES & MSE' & IO' & A2 & A1 & A0' |
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23 | | R7 = RES & MSE' & IO' & A2 & A1 & A0 |
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24 | | SEM = RW' & R0 |
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25 | | ENN = RW' & R2 |
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26 | | ENI = RW' & R3 |
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27 | | ENR = RW' & R4 |
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28 | | RDS = RW & R7 |
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29 | | CLN = RES' # (RW' & R5) |
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30 | | CLI = RES' # (RW' & R6) |
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31 | | CLR = RES' # (RW' & R7) |