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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | - | 1 | || FILE: #0158.PLD |
| 2 | || PROJ: 20120600 |
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| 3 | || PART: G16V8-#0158 |
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| 4 | || |
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| 5 | || DEV : GAL16V8 |
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| 6 | || |
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| 7 | || DESC: DECODER FILE REGISTER |
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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:A0, 2:A1, 3:A2, 4:A3, 5:PHI2, 6:KFR, 7:PHI0, 8:RW, 9:S0, 11:RES, 19:KBR, |
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| 14 | || OUTPUT |
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| 15 | | 12:RDS, 13:HWP, 14:HCN, 15:HCI, 16:HBR, 17:HBW, 18:KRS |
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| 16 | | |
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| 17 | | ACTIVE-LOW: RDS, HWP, HCN, HCI, HBR, HBW |
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| 18 | | |
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| 19 | | PROPERTY:"SIMPLE" |
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| 20 | | |
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| 21 | | SIGNATURE: "0158 " |
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| 22 | | |
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| 23 | || -------------------------------------------------------- |
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| 24 | || SEGNALI INTERFACCIA KEYBOARD |
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| 25 | | KEYB = (KFR') |
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| 26 | || FILE REGISTER -> FE40 - FE43 |
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| 27 | | HBR = (KEYB & A3' & A2' & RW & PHI2) |
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| 28 | | HW1 = (KEYB & A3' & A2' & RW' & PHI2 & S0) |
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| 29 | | HW2 = (KEYB & A3' & A2' & RW' & PHI0 & S0') |
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| 30 | | HBW = (HW1 # HW2) |
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| 31 | | HWP = (KEYB & A3' & A2 & A1' & A0' & RW' & PHI2) || WRITE FE44 |
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| 32 | | HCN = (KEYB & A3' & A2 & A1' & A0 & RW' & PHI2) || WRITE FE45 |
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| 33 | | HCI = (KEYB & A3' & A2 & A1 & A0' & RW' & PHI2) || WRITE FE46 |
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| 34 | | RDS = (KEYB & A3' & A2 & A1' & A0' & RW & PHI2) || READ FE44 |
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| 35 | | KRS = (RES & KBR) |