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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | - | 1 | || FILE: #0169.PLD |
| 2 | || PROJ: 20170602 |
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| 3 | || PART: G16V8-#0169 |
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| 4 | || |
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| 5 | || DEV : GAL16V8 |
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| 6 | || |
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| 7 | || DESC: I/O 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:IO, 8:PHI2, 9:RW, 11:PHI0, |
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| 14 | || OUTPUT |
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| 15 | | 12:VIA, 13:TLC, 14:ACIA, 15:RD, 16:WE, 17:URD, 18:UWR, 19:EN |
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| 16 | | |
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| 17 | || |
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| 18 | | ACTIVE-LOW: VIA, TLC, ACIA, RD, WE, URD |
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| 19 | | |
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| 20 | | PROPERTY: "SIMPLE" |
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| 21 | | |
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| 22 | | SIGNATURE: "0169 " |
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| 23 | | |
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| 24 | || VIA = FC10 - FC1F |
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| 25 | | VIA = (IO' & A7' & A6' & A5' & A4) |
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| 26 | || TLC = FC20 - FC27 |
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| 27 | | TLC = (IO' & A7' & A6' & A5 & A4' & A3') |
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| 28 | || ACIA = FC28 - FC2B |
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| 29 | | ACIA = (IO' & A7' & A6' & A5 & A4' & A3 & A2') |
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| 30 | || UM245R = FC2C - FC2F |
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| 31 | | UM = (IO' & A7' & A6' & A5 & A4' & A3 & A2) |
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| 32 | || READ/WRITE UM245R PORT |
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| 33 | | URD = (UM & PHI2 & RW) |
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| 34 | | UWR = (UM & PHI2 & RW') |
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| 35 | || RD/WE |
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| 36 | | RD = (PHI2 & RW) |
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| 37 | | WE = (PHI0 & RW') |
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| 38 | || DATA BUS ENABLE SIGNAL |
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| 39 | | EN = (PHI2 # PHI0) |