****************************************************************************** ********************* IBIS GOLDEN PARSER BUG REPORT FORM ********************* ****************************************************************************** INSTRUCTIONS To report a bug in the IBIS golden parser. Please fill out the top part of the following form and send the complete form to ibischk-bug@vhdl.org. A list of reported bugs will be maintained on vhdl.org. ****************************************************************************** PARSER VERSION NUMBER: 3.0.1 PLATFORM (SPARC, HP700, PC, etc.): PC OS AND VERSION: NT4.0 REPORTED BY: John Keifer, Intel DATE: 8/5/98 DESCRIPTION OF BUG: ERROR - Model N3_sp_dc_io: Pulldown has Decreasing Current The above error is the result of a GTL+ I/O model that has early clamps for the receiver and a driver without early clamps. The error is over the IV subtract curve. This was created for simulation purposes and is not real, but it should be valid since the early clamps alone pass IBIS spec, and the IV curves pass the IBIS spec when the clamps are added. This should only be a warning (If it is desired to have a more thorough check, then a summation section should be added to the parser program to check the sum of the clamps and driver IVs.). INSERT IBIS FILE DEMONSTRATING THE BUG: |*************************************************************************** | [Pulldown] | | Voltage I(typ) I(min) I(max) | -1.79999995E+0 2.09227204E-3 849.81322289E-6 4.39876318E-3 -1.75000000E+0 NA NA 4.71645594E-3 -1.64999998E+0 NA NA 5.44263422E-3 -1.60000002E+0 2.98269093E-3 NA NA -1.54999995E+0 NA 1.36919320E-3 NA -1.39999998E+0 NA NA 7.34426081E-3 -1.35000002E+0 NA 1.82872266E-3 NA -1.29999995E+0 4.66461480E-3 NA NA -1.25000000E+0 4.81510162E-3 NA NA -1.20000005E+0 NA 2.31362879E-3 NA -1.14999998E+0 NA NA 8.40108097E-3 -1.10000002E+0 NA 2.61263549E-3 NA -1.04999995E+0 5.23723662E-3 2.62445584E-3 NA -1.00000000E+0 NA NA 9.10236686E-3 -899.99997616E-3 NA NA 9.61693376E-3 -850.00002384E-3 5.74255735E-3 NA NA -800.00001192E-3 NA 2.60746107E-3 NA -750.00000000E-3 6.23795763E-3 2.65046954E-3 NA -699.99998808E-3 NA 2.76744552E-3 11.11314818E-3 -649.99997616E-3 6.68109208E-3 NA NA -600.00002384E-3 NA 2.94011645E-3 11.82449609E-3 -550.00001192E-3 7.04918988E-3 NA NA -500.00000000E-3 7.17914104E-3 3.03601008E-3 12.43648678E-3 -449.99998808E-3 7.25544896E-3 3.04672029E-3 12.66306080E-3 -400.00000596E-3 7.25670252E-3 3.02541815E-3 12.80024182E-3 -349.99999404E-3 7.17416778E-3 2.97021540E-3 12.81560864E-3 -300.00001192E-3 7.01374374E-3 2.88558938E-3 12.69755606E-3 -250.00000000E-3 NA NA 12.47600652E-3 -150.00000596E-3 6.37656590E-3 2.57584918E-3 NA -100.00000149E-3 6.19247183E-3 2.49987002E-3 11.67477947E-3 -50.00000075E-3 6.04097545E-3 2.45760591E-3 NA 0.00000000E+0 5.93469199E-3 2.45828927E-3 11.23689115E-3 50.00000075E-3 5.86990267E-3 2.50613946E-3 NA 100.00000149E-3 5.84969576E-3 2.60582077E-3 10.89754142E-3 150.00000596E-3 5.89193963E-3 2.76987301E-3 10.76620445E-3 200.00000298E-3 6.02254411E-3 3.00998660E-3 10.67675650E-3 250.00000000E-3 6.27619028E-3 3.33181000E-3 10.65117121E-3 300.00001192E-3 6.69030892E-3 3.72820254E-3 10.72192471E-3 349.99999404E-3 7.28217978E-3 4.17818595E-3 10.93700528E-3 400.00000596E-3 8.01974442E-3 NA 11.35831699E-3 449.99998808E-3 NA NA 12.03501597E-3 500.00000000E-3 NA NA 12.94560824E-3 550.00001192E-3 10.50923858E-3 6.09365199E-3 NA 649.99997616E-3 12.12361362E-3 6.98909396E-3 NA 699.99998808E-3 NA 7.41160288E-3 17.24212989E-3 750.00000000E-3 13.64491414E-3 NA 18.28811131E-3 800.00001192E-3 NA 8.20303615E-3 NA 850.00002384E-3 15.06553683E-3 NA 20.29820345E-3 899.99997616E-3 NA 8.91976804E-3 NA 949.99998808E-3 16.38052054E-3 NA 22.19339646E-3 1.00000000E+0 NA 9.55794845E-3 NA 1.04999995E+0 17.58516580E-3 9.84636787E-3 23.96796830E-3 1.10000002E+0 NA NA 24.80830997E-3 1.14999998E+0 18.67500506E-3 10.35941578E-3 NA 1.20000005E+0 NA 10.58304496E-3 26.39186755E-3 1.25000000E+0 19.64589581E-3 10.78403275E-3 27.13385597E-3 1.29999995E+0 20.08553781E-3 10.95487084E-3 NA 1.35000002E+0 20.46562172E-3 11.09179016E-3 28.51541340E-3 1.39999998E+0 20.77327296E-3 11.20126527E-3 29.14090455E-3 1.45000005E+0 21.02512494E-3 11.28494088E-3 29.65749428E-3 1.50000000E+0 21.23386040E-3 11.33815013E-3 30.07808328E-3 1.54999995E+0 NA 11.34667732E-3 30.42368591E-3 1.60000002E+0 21.55164629E-3 11.27893105E-3 30.71103245E-3 1.64999998E+0 21.65858634E-3 11.11428626E-3 30.95252067E-3 1.70000005E+0 21.70228772E-3 10.83894912E-3 NA 1.75000000E+0 21.61915228E-3 10.44605393E-3 31.31813556E-3 1.79999995E+0 21.35175839E-3 9.93678812E-3 31.41780198E-3 1.85000002E+0 20.86615376E-3 9.31813102E-3 31.37313947E-3 1.89999998E+0 20.15920542E-3 8.60516727E-3 31.07721545E-3 1.95000005E+0 19.24904622E-3 7.82143418E-3 30.45236319E-3 2.00000000E+0 18.15954596E-3 NA 29.48698960E-3 2.04999995E+0 16.91735163E-3 6.16871566E-3 28.21933292E-3 2.09999990E+0 15.55735804E-3 5.36129950E-3 26.69789456E-3 2.15000010E+0 NA 4.59396001E-3 24.97139201E-3 2.20000005E+0 12.73512095E-3 3.87592707E-3 23.09900150E-3 2.25000000E+0 11.43740769E-3 3.21275927E-3 21.17883042E-3 2.29999995E+0 10.28621290E-3 2.62070540E-3 19.35718954E-3 2.34999990E+0 9.28469561E-3 2.15522759E-3 17.76140928E-3 2.40000010E+0 8.41640122E-3 1.72319077E-3 16.43133350E-3 2.45000005E+0 7.66193494E-3 NA 15.33949748E-3 2.50000000E+0 7.01252557E-3 926.56910419E-6 14.44011740E-3 2.54999995E+0 6.51571341E-3 NA 13.69339600E-3 2.59999990E+0 6.06827624E-3 212.35644817E-6 13.07505369E-3 2.65000010E+0 NA -116.75059795E-6 12.59065047E-3 2.70000005E+0 5.28222322E-3 NA 12.16212660E-3 2.75000000E+0 NA -723.31726551E-6 NA 2.79999995E+0 4.61700559E-3 NA 11.43335178E-3 2.84999990E+0 4.32275236E-3 -1.26770139E-3 11.12271100E-3 2.90000010E+0 NA -1.51854753E-3 NA 2.95000005E+0 3.80036235E-3 NA 10.58971882E-3 3.00000000E+0 3.56882811E-3 -1.98107958E-3 NA 3.04999995E+0 NA -2.19386816E-3 NA 3.09999990E+0 3.15722823E-3 NA 9.96929407E-3 3.15000010E+0 NA -2.58553028E-3 NA 3.25000000E+0 2.65228748E-3 NA 9.51522589E-3 3.29999995E+0 2.51054764E-3 -3.09556723E-3 9.39404964E-3 3.34999990E+0 2.40832567E-3 NA 9.31936502E-3 3.40000010E+0 NA -3.34352255E-3 NA 3.45000005E+0 2.23189592E-3 NA NA 3.54999995E+0 2.08956003E-3 -3.65477800E-3 9.11891460E-3 | [GND Clamp] | | Voltage I(typ) I(min) I(max) | -1.79999995E+0 -216.03281796E-3 -136.15599275E-3 -280.30928969E-3 -1.75000000E+0 -208.27454329E-3 -131.05595112E-3 -270.67813277E-3 -1.70000005E+0 -200.54484904E-3 -125.98374486E-3 -261.06071472E-3 -1.64999998E+0 -192.82875955E-3 -120.94025314E-3 -251.46096945E-3 -1.60000002E+0 -185.14738977E-3 -115.92540145E-3 -241.87824130E-3 -1.54999995E+0 -177.48221755E-3 -110.94564199E-3 -232.31810331E-3 -1.50000000E+0 -169.85149682E-3 -105.99710047E-3 -222.78273106E-3 -1.45000005E+0 -162.24876046E-3 -101.09051317E-3 -213.26619387E-3 -1.39999998E+0 -154.68642116E-3 -96.21685743E-3 -203.77071202E-3 -1.35000002E+0 -147.15629816E-3 -91.39218926E-3 -194.13818419E-3 -1.29999995E+0 -139.67113197E-3 -86.60944551E-3 -184.52961743E-3 -1.25000000E+0 -132.10450113E-3 -81.88208193E-3 -174.96444285E-3 -1.20000005E+0 -124.53316897E-3 -77.19956338E-3 -165.45420885E-3 -1.14999998E+0 -117.02450365E-3 -72.58102298E-3 -155.98787367E-3 -1.10000002E+0 -109.58653688E-3 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1.25000000E+0 -82.11113163E-6 -57.24556831E-6 -84.68140732E-6 1.29999995E+0 -80.76454105E-6 -55.96146002E-6 -83.07883400E-6 1.35000002E+0 -79.41304648E-6 -53.76206536E-6 -81.47433982E-6 1.39999998E+0 -78.04749475E-6 -48.84712325E-6 -79.86772835E-6 1.45000005E+0 -76.62035205E-6 -36.83594696E-6 -78.25835200E-6 1.50000000E+0 -74.89207928E-6 -8.70592885E-6 -76.64314762E-6 1.54999995E+0 -71.80991815E-6 52.94001312E-6 -75.00359789E-6 1.60000002E+0 -63.61107080E-6 182.05874949E-6 -73.22654710E-6 1.64999998E+0 -39.17772483E-6 401.11015551E-6 -70.70141874E-6 1.70000005E+0 32.33628013E-6 725.49213655E-6 -64.81264427E-6 1.75000000E+0 217.65503334E-6 1.16396823E-3 -46.55801604E-6 1.79999995E+0 576.62132895E-6 1.71875930E-3 12.62732712E-6 | [POWER Clamp] | | Voltage I(typ) I(min) I(max) | -1.79999995E+0 922.16986418E-3 1.00759423E+0 914.82049227E-3 -1.75000000E+0 870.58675289E-3 962.36705780E-3 856.99826479E-3 -1.70000005E+0 819.12136078E-3 917.22595692E-3 799.33643341E-3 -1.64999998E+0 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-749.66828106E-6 -3.18818470E-3 1.60000002E+0 -1.71062187E-3 -759.93157225E-6 -3.21804848E-3 1.64999998E+0 -1.74056715E-3 -778.41174789E-6 -3.26896156E-3 1.70000005E+0 -1.80292188E-3 -814.29950660E-6 -3.37890186E-3 1.75000000E+0 -1.93997950E-3 -883.28507263E-6 -3.62884812E-3 1.79999995E+0 -2.21671304E-3 -1.00889336E-3 -4.11980879E-3 | ****************************************************************************** ******************** BELOW FOR ADMINISTRATION AND TRACKING ******************* ****************************************************************************** BUG NUMBER: 31 SEVERITY: [FATAL, SEVERE, MODERATE, ANNOYING, ENHANCEMENT] ENHANCEMENT PRIORITY: [HIGH, MEDIUM, LOW] MEDIUM STATUS: [OPEN, CLOSED, WILL NOT FIX, NOT A BUG] CLOSED FIXED VERSION: Version 3.2.2 FIXED DATE: January, 1999 NOTES ON BUG FIX: It was decided to fix this bug by changing the Error message to a Warning Message at the December 18, 1998 meeting. This was reaffirmed at the January 15, 1999 meeting. ****************************************************************************** ******************************************************************************