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|00002110| 20 20 20 74 68 65 79 20 | 64 69 73 61 67 72 65 65 |   they |disagree|
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|00002140| 20 70 72 65 70 6c 61 63 | 65 6d 65 6e 74 73 20 68 | preplac|ements h|
|00002150| 61 76 65 0d 20 20 20 20 | 20 20 20 20 20 20 20 70 |ave.    |       p|
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|000021f0| 20 62 6c 6f 63 6b 2e 20 | 20 54 68 65 0d 20 20 20 | block. | The.   |
|00002200| 20 20 20 20 20 20 20 20 | 66 69 72 73 74 20 6f 6e |        |first on|
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|00002250| 4f 6e 6c 79 20 76 61 6c | 69 64 20 62 6c 6f 63 6b |Only val|id block|
|00002260| 20 6c 65 74 74 65 72 73 | 20 66 6f 72 20 74 68 65 | letters| for the|
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|00002290| 30 2c 0d 20 20 20 20 20 | 20 20 20 20 20 20 6f 6e |0,.     |      on|
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|00002330| 20 20 43 6c 6f 63 6b 73 | 20 63 61 6e 6e 6f 74 20 |  Clocks| cannot |
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|00002350| 6f 20 6c 6f 67 69 63 20 | 62 6c 6f 63 6b 73 2e 20 |o logic |blocks. |
|00002360| 20 41 20 63 6c 6f 63 6b | 20 73 69 67 6e 61 6c 0d | A clock| signal.|
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|00002400| 20 73 75 70 70 6f 72 74 | 20 6d 69 78 65 64 20 66 | support| mixed f|
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|00002470| 45 78 70 6c 61 6e 61 74 | 69 6f 6e 3a 0d 20 20 20 |Explanat|ion:.   |
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|00002530| 20 20 49 66 20 79 6f 75 | 20 77 61 6e 74 2c 20 79 |  If you| want, y|
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|00002570| 20 20 20 20 20 20 61 64 | 64 69 6e 67 20 74 68 65 |      ad|ding the|
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|000026c0| 20 20 20 20 61 6c 6c 20 | 74 68 65 20 73 70 65 63 |    all |the spec|
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|00002730| 3d 01 46 32 30 30 0d 45 | 78 70 6c 61 6e 61 74 69 |=.F200.E|xplanati|
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|00002750| 65 20 67 72 6f 75 70 20 | 64 65 63 6c 61 72 61 74 |e group |declarat|
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|00002770| 70 61 74 69 62 6c 65 20 | 77 69 74 68 20 74 68 65 |patible |with the|
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|00002790| 47 5f 78 20 66 6f 72 6d | 61 74 20 72 65 63 6f 67 |G_x form|at recog|
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|000027f0| 0d 0d 52 65 63 6f 76 65 | 72 79 3a 0d 20 20 20 20 |..Recove|ry:.    |
|00002800| 20 20 20 20 4e 6f 6e 65 | 20 6e 65 63 65 73 73 61 |    None| necessa|
|00002810| 72 79 2e 0d 0d 20 20 20 | 20 20 20 20 20 48 6f 77 |ry...   |     How|
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|00002860| 72 65 63 6f 6d 70 69 6c | 65 20 69 74 2e 0d 00 a0 |recompil|e it....|
|00002870| 01 46 35 35 30 0d 45 78 | 70 6c 61 6e 61 74 69 6f |.F550.Ex|planatio|
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|00002890| 61 76 65 20 75 73 65 64 | 20 74 6f 6f 20 6d 61 6e |ave used| too man|
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|000028b0| 69 6e 20 79 6f 75 72 20 | 64 65 73 69 67 6e 2e 20 |in your |design. |
|000028c0| 20 59 6f 75 20 6e 65 65 | 64 0d 20 20 20 20 20 20 | You nee|d.      |
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|00002930| 48 20 64 65 76 69 63 65 | 2e 0d 0d 20 20 20 20 20 |H device|...     |
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|000029b0| 0d 20 20 20 20 20 20 20 | 20 fe 20 20 52 65 64 75 |.       | .  Redu|
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|00002a70| 20 20 20 20 20 73 75 63 | 68 20 61 73 20 43 4c 4b |     suc|h as CLK|
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|00002ac0| 48 20 64 65 76 69 63 65 | 20 61 72 63 68 69 74 65 |H device| archite|
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|00002b00| 20 20 20 6f 6e 20 61 20 | 66 75 6e 63 74 69 6f 6e |   on a |function|
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|00002b20| 20 6c 6f 67 69 63 20 66 | 75 6e 63 74 69 6f 6e 2e | logic f|unction.|
|00002b30| 20 20 4f 72 2c 20 79 6f | 75 20 6d 61 79 20 68 61 |  Or, yo|u may ha|
|00002b40| 76 65 0d 20 20 20 20 20 | 20 20 20 61 6e 20 69 6e |ve.     |   an in|
|00002b50| 76 65 72 73 69 6f 6e 20 | 6f 6e 20 74 68 65 20 63 |version |on the c|
|00002b60| 6c 6f 63 6b 2e 0d 0d 52 | 65 63 6f 76 65 72 79 3a |lock...R|ecovery:|
|00002b70| 0d 20 20 20 20 20 20 20 | 20 43 6f 72 72 65 63 74 |.       | Correct|
|00002b80| 20 79 6f 75 72 20 64 65 | 73 69 67 6e 20 62 79 20 | your de|sign by |
|00002b90| 72 65 6d 6f 76 69 6e 67 | 20 74 68 65 20 65 78 63 |removing| the exc|
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|00002bc0| 20 20 20 66 75 6e 63 74 | 69 6f 6e 61 6c 20 65 71 |   funct|ional eq|
|00002bd0| 75 61 74 69 6f 6e 20 6f | 72 20 6c 6f 67 69 63 20 |uation o|r logic |
|00002be0| 66 75 6e 63 74 69 6f 6e | 2e 20 20 4f 72 2c 20 62 |function|.  Or, b|
|00002bf0| 79 20 72 65 6d 6f 76 69 | 6e 67 20 74 68 65 20 69 |y removi|ng the i|
|00002c00| 6e 76 65 72 73 69 6f 6e | 0d 20 20 20 20 20 20 20 |nversion|.       |
|00002c10| 20 66 72 6f 6d 20 74 68 | 65 20 63 6c 6f 63 6b 2e | from th|e clock.|
|00002c20| 0d 0d 00 71 06 46 35 38 | 30 0d 45 78 70 6c 61 6e |...q.F58|0.Explan|
|00002c30| 61 74 69 6f 6e 3a 0d 20 | 20 20 20 20 20 20 20 54 |ation:. |       T|
|00002c40| 68 65 20 70 72 6f 63 65 | 73 73 20 6f 66 20 64 69 |he proce|ss of di|
|00002c50| 76 69 64 69 6e 67 20 79 | 6f 75 72 20 6c 6f 67 69 |viding y|our logi|
|00002c60| 63 20 73 69 67 6e 61 6c | 73 20 62 65 74 77 65 65 |c signal|s betwee|
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|00002c80| 20 20 20 20 20 20 62 6c | 6f 63 6b 73 20 66 61 69 |      bl|ocks fai|
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|00002ca0| 74 69 6f 6e 69 6e 67 20 | 66 69 6c 6c 73 20 75 70 |tioning |fills up|
|00002cb0| 20 74 68 65 20 69 6e 64 | 69 76 69 64 75 61 6c 0d | the ind|ividual.|
|00002cc0| 20 20 20 20 20 20 20 20 | 64 65 76 69 63 65 20 62 |        |device b|
|00002cd0| 6c 6f 63 6b 73 20 75 6e | 74 69 6c 20 6f 6e 65 20 |locks un|til one |
|00002ce0| 6f 66 20 74 68 65 20 66 | 6f 6c 6c 6f 77 69 6e 67 |of the f|ollowing|
|00002cf0| 20 6f 63 63 75 72 73 2e | 0d 0d 20 20 20 20 20 20 | occurs.|..      |
|00002d00| 20 20 fe 20 20 50 68 79 | 73 69 63 61 6c 20 6c 69 |  .  Phy|sical li|
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|00002d20| 6c 67 6f 72 69 74 68 6d | 20 74 6f 20 67 6f 20 6f |lgorithm| to go o|
|00002d30| 6e 20 74 6f 20 61 6e 6f | 74 68 65 72 0d 20 20 20 |n to ano|ther.   |
|00002d40| 20 20 20 20 20 20 20 20 | 62 6c 6f 63 6b 2e 20 20 |        |block.  |
|00002d50| 54 68 61 74 20 69 73 2c | 20 74 68 65 20 62 6c 6f |That is,| the blo|
|00002d60| 63 6b 20 62 65 63 6f 6d | 65 73 20 66 75 6c 6c 2e |ck becom|es full.|
|00002d70| 0d 0d 20 20 20 20 20 20 | 20 20 fe 20 20 41 6c 6c |..      |  .  All|
|00002d80| 20 72 65 6c 61 74 65 64 | 20 65 71 75 61 74 69 6f | related| equatio|
|00002d90| 6e 73 20 68 61 76 65 20 | 62 65 65 6e 20 70 6c 61 |ns have |been pla|
|00002da0| 63 65 64 20 69 6e 20 74 | 68 65 20 62 6c 6f 63 6b |ced in t|he block|
|00002db0| 2e 0d 0d 20 20 20 20 20 | 20 20 20 4e 65 78 74 2c |...     |   Next,|
|00002dc0| 20 74 68 65 20 73 6f 66 | 74 77 61 72 65 20 63 6f | the sof|tware co|
|00002dd0| 6e 73 69 64 65 72 73 20 | 61 6e 6f 74 68 65 72 20 |nsiders |another |
|00002de0| 62 6c 6f 63 6b 20 6f 72 | 20 73 65 74 20 6f 66 0d |block or| set of.|
|00002df0| 20 20 20 20 20 20 20 20 | 65 71 75 61 74 69 6f 6e |        |equation|
|00002e00| 73 2e 0d 0d 20 20 20 20 | 20 20 20 20 4d 61 6e 79 |s...    |    Many|
|00002e10| 20 69 74 65 6d 73 20 61 | 72 65 20 63 6f 6e 73 69 | items a|re consi|
|00002e20| 64 65 72 65 64 20 69 6e | 20 74 68 65 20 65 76 61 |dered in| the eva|
|00002e30| 6c 75 61 74 69 6f 6e 20 | 6f 66 20 62 6c 6f 63 6b |luation |of block|
|00002e40| 20 63 6f 6e 74 65 6e 74 | 73 3a 0d 0d 20 20 20 20 | content|s:..    |
|00002e50| 20 20 20 20 fe 20 20 53 | 68 61 72 65 64 20 72 65 |    .  S|hared re|
|00002e60| 73 6f 75 72 63 65 73 20 | 73 75 63 68 20 61 73 20 |sources |such as |
|00002e70| 53 45 54 46 2c 20 52 53 | 54 46 20 61 6e 64 20 74 |SETF, RS|TF and t|
|00002e80| 68 72 65 65 2d 73 74 61 | 74 65 20 62 61 6e 6b 69 |hree-sta|te banki|
|00002e90| 6e 67 0d 20 20 20 20 20 | 20 20 20 fe 20 20 50 72 |ng.     |   .  Pr|
|00002ea0| 6f 64 75 63 74 20 74 65 | 72 6d 73 0d 20 20 20 20 |oduct te|rms.    |
|00002eb0| 20 20 20 20 fe 20 20 42 | 6c 6f 63 6b 20 69 6e 70 |    .  B|lock inp|
|00002ec0| 75 74 73 0d 20 20 20 20 | 20 20 20 20 fe 20 20 49 |uts.    |    .  I|
|00002ed0| 2f 4f 20 70 69 6e 20 6e | 65 65 64 73 0d 0d 20 20 |/O pin n|eeds..  |
|00002ee0| 20 20 20 20 20 20 49 6e | 20 61 64 64 69 74 69 6f |      In| additio|
|00002ef0| 6e 2c 20 73 6f 6d 65 20 | 72 65 73 6f 75 72 63 65 |n, some |resource|
|00002f00| 73 20 6d 61 79 20 62 65 | 20 72 65 73 65 72 76 65 |s may be| reserve|
|00002f10| 64 20 61 6e 64 20 6e 6f | 74 20 75 73 65 64 2c 0d |d and no|t used,.|
|00002f20| 20 20 20 20 20 20 20 20 | 64 65 70 65 6e 64 69 6e |        |dependin|
|00002f30| 67 20 68 6f 77 20 74 68 | 65 20 6d 61 78 69 6d 75 |g how th|e maximu|
|00002f40| 6d 20 70 61 63 6b 69 6e | 67 20 66 6c 61 67 20 69 |m packin|g flag i|
|00002f50| 73 20 73 65 74 2e 0d 0d | 20 20 20 20 20 20 20 20 |s set...|        |
|00002f60| 54 68 65 20 70 72 6f 63 | 65 73 73 20 66 61 69 6c |The proc|ess fail|
|00002f70| 73 20 74 6f 20 77 6f 72 | 6b 20 77 68 65 6e 20 69 |s to wor|k when i|
|00002f80| 74 20 68 61 73 20 6e 6f | 20 62 6c 6f 63 6b 73 20 |t has no| blocks |
|00002f90| 77 69 74 68 20 77 68 69 | 63 68 20 74 6f 0d 20 20 |with whi|ch to.  |
|00002fa0| 20 20 20 20 20 20 77 6f | 72 6b 2e 20 20 54 68 69 |      wo|rk.  Thi|
|00002fb0| 73 20 6f 63 63 75 72 73 | 20 77 68 65 6e 20 61 6c |s occurs| when al|
|00002fc0| 6c 20 74 68 65 20 62 6c | 6f 63 6b 73 20 61 72 65 |l the bl|ocks are|
|00002fd0| 20 66 75 6c 6c 20 61 6e | 64 20 74 68 65 72 65 20 | full an|d there |
|00002fe0| 61 72 65 0d 20 20 20 20 | 20 20 20 20 73 74 69 6c |are.    |    stil|
|00002ff0| 6c 20 65 71 75 61 74 69 | 6f 6e 73 20 6c 65 66 74 |l equati|ons left|
|00003000| 2e 20 20 41 74 20 74 68 | 69 73 20 70 6f 69 6e 74 |.  At th|is point|
|00003010| 2c 20 74 68 65 20 73 6f | 66 74 77 61 72 65 20 64 |, the so|ftware d|
|00003020| 69 73 70 6c 61 79 73 0d | 20 20 20 20 20 20 20 20 |isplays.|        |
|00003030| 74 68 65 20 55 4e 2e 50 | 4c 43 20 6d 65 73 73 61 |the UN.P|LC messa|
|00003040| 67 65 2c 20 66 6f 6c 6c | 6f 77 65 64 20 62 79 20 |ge, foll|owed by |
|00003050| 6f 6e 65 20 6f 72 20 6d | 6f 72 65 20 64 69 61 67 |one or m|ore diag|
|00003060| 6e 6f 73 74 69 63 0d 20 | 20 20 20 20 20 20 20 6d |nostic. |       m|
|00003070| 65 73 73 61 67 65 73 20 | 28 50 4c 43 2e 44 4d 29 |essages |(PLC.DM)|
|00003080| 2e 20 53 6f 6d 65 20 6f | 66 20 74 68 65 73 65 20 |. Some o|f these |
|00003090| 6d 65 73 73 61 67 65 73 | 20 72 65 63 6f 6d 6d 65 |messages| recomme|
|000030a0| 6e 64 20 75 73 65 72 0d | 20 20 20 20 20 20 20 20 |nd user.|        |
|000030b0| 61 63 74 69 6f 6e 2e 0d | 0d 20 20 20 20 20 20 20 |action..|.       |
|000030c0| 20 54 68 69 73 20 69 73 | 20 61 20 63 6f 6d 70 6c | This is| a compl|
|000030d0| 65 78 20 65 72 72 6f 72 | 2e 20 20 52 65 66 65 72 |ex error|.  Refer|
|000030e0| 20 74 6f 20 43 68 2e 20 | 35 20 69 6e 20 74 68 65 | to Ch. |5 in the|
|000030f0| 20 4d 41 43 48 20 55 73 | 65 72 27 73 20 4d 61 6e | MACH Us|er's Man|
|00003100| 75 61 6c 0d 20 20 20 20 | 20 20 20 20 66 6f 72 20 |ual.    |    for |
|00003110| 6d 6f 72 65 20 69 6e 66 | 6f 72 6d 61 74 69 6f 6e |more inf|ormation|
|00003120| 2e 0d 0d 52 65 63 6f 76 | 65 72 79 3a 0d 20 20 20 |...Recov|ery:.   |
|00003130| 20 20 20 20 20 46 6f 6c | 6c 6f 77 20 74 68 65 73 |     Fol|low thes|
|00003140| 65 20 73 74 65 70 73 2e | 0d 0d 20 20 20 20 20 20 |e steps.|..      |
|00003150| 20 20 31 2e 20 52 75 6e | 20 74 68 65 20 66 69 74 |  1. Run| the fit|
|00003160| 74 65 72 20 70 72 6f 67 | 72 61 6d 20 77 69 74 68 |ter prog|ram with|
|00003170| 20 74 68 65 20 6d 61 78 | 69 6d 75 6d 20 70 61 63 | the max|imum pac|
|00003180| 6b 69 6e 67 20 6f 70 74 | 69 6f 6e 20 73 65 74 2e |king opt|ion set.|
|00003190| 0d 0d 20 20 20 20 20 20 | 20 20 32 2e 20 41 6e 61 |..      |  2. Ana|
|000031a0| 6c 79 7a 65 20 74 68 65 | 20 72 65 73 6f 75 72 63 |lyze the| resourc|
|000031b0| 65 20 75 74 69 6c 69 7a | 61 74 69 6f 6e 2c 20 6d |e utiliz|ation, m|
|000031c0| 61 6b 69 6e 67 20 73 75 | 72 65 20 74 68 61 74 20 |aking su|re that |
|000031d0| 74 68 65 0d 20 20 20 20 | 20 20 20 20 20 20 20 64 |the.    |       d|
|000031e0| 65 73 69 67 6e 20 69 73 | 20 63 6f 6e 73 69 73 74 |esign is| consist|
|000031f0| 61 6e 74 20 77 69 74 68 | 20 74 68 65 20 4d 41 43 |ant with| the MAC|
|00003200| 48 20 64 65 76 69 63 65 | 20 6c 69 6d 69 74 73 2e |H device| limits.|
|00003210| 0d 0d 20 20 20 20 20 20 | 20 20 33 2e 20 55 73 65 |..      |  3. Use|
|00003220| 20 6d 61 6e 75 61 6c 20 | 62 6c 6f 63 6b 20 70 61 | manual |block pa|
|00003230| 72 74 69 74 69 6f 6e 69 | 6e 67 20 63 6f 6d 6d 61 |rtitioni|ng comma|
|00003240| 6e 64 73 20 74 6f 20 73 | 75 67 67 65 73 74 20 61 |nds to s|uggest a|
|00003250| 20 62 65 74 74 65 72 0d | 20 20 20 20 20 20 20 20 | better.|        |
|00003260| 20 20 20 77 61 79 20 6f | 66 20 72 65 61 6c 69 7a |   way o|f realiz|
|00003270| 69 6e 67 20 74 68 65 20 | 66 75 6e 63 74 69 6f 6e |ing the |function|
|00003280| 20 74 6f 20 74 68 65 20 | 73 6f 66 74 77 61 72 65 | to the |software|
|00003290| 2e 0d 0d ff 0d 00       |                         |......  |        |
+--------+-------------------------+-------------------------+--------+--------+