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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | - | 1 | || FILE: #0170.PLD |
| 2 | || PROJ: 20170602 |
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| 3 | || PART: G16V8-#0170 |
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| 4 | || |
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| 5 | || DEV : GAL16V8 |
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| 6 | || |
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| 7 | || DESC: MEMORY DECODER |
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| 8 | || |
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| 9 | | |
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| 10 | |GAL16V8A |
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| 11 | | |
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| 12 | || INPUT |
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| 13 | | 1:A2, 2:A3, 3:A4, 4:A5, 5:A6, 6:A7, 7:A10, 8:A11, 9:A12, 11:IO, |
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| 14 | | 12:CX0, 13:EN, |
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| 15 | || OUTPUT |
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| 16 | | 14:CE0, 15:CE1, 16:GE, 17:-, 18:-, 19:- |
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| 17 | | |
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| 18 | || |
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| 19 | | ACTIVE-LOW: CE0, CE1, GE |
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| 20 | | |
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| 21 | | PROPERTY: "SIMPLE" |
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| 22 | | |
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| 23 | | SIGNATURE: "0170 " |
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| 24 | | |
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| 25 | || IO RANGE = FC10 - FC2F |
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| 26 | | IOA = (IO' & A7' & A6' & A5' & A4) |
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| 27 | | IOB = (IO' & A7' & A6' & A5 & A4' & A3') |
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| 28 | | IOC = (IO' & A7' & A6' & A5 & A4' & A3 & A2') |
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| 29 | | IOD = (IO' & A7' & A6' & A5 & A4' & A3 & A2) |
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| 30 | | IOS = (IOA # IOB # IOC # IOD) |
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| 31 | | MEM0 = (CX0' & A12 & A11) |
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| 32 | | MEM1 = (CX0' & A12 & A11' & A10) |
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| 33 | | CE0 = MEM0 |
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| 34 | | CE1 = MEM1 |
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| 35 | | GE = (EN & (IOS # MEM0 # MEM1)) |