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 Strange problem with 27c256

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T O P I C    R E V I E W
vincentes2000 Posted - 01/05/2006 : 03:05:12
Hi

I have a Willem enhanced programmer.

My problem is ... I can't burn the 27C256 without fault, i can read without problem (i can read a 27c256 no earse without program)

When I make the test Hardware.. all test is OK

When i load the file Hex in the buffer, and i burn this file in the chip, i am error ...

When i read the chip (after the failure burn).. i can see a strange problem

The Bythe on adress 0X0000 to 0x00FF is ok
The Bythe on adress 0X0100 To 0x017F : 1 bythe / 2 is good, other bythe is FF

Exemple :

First section is good (0X0000 to 0x00FF)

:100000 012C00C0E0C083C082613BC0E0C0D0C012
:100010 8201BAC2AFC0E0C0820173020056000282
:100020 DE120110992F30982C012F3202175BC07D
:100030 E0C0D075D018A999C298E7309A11780716
:100040 E224FCE34009C2AF05A0E315A0D2AFF55E
:100050 99D0D0D0E032C0E0C0D0C082C083C0F020
:100060 75D018123643C28ED0F0D083D082D0D053
:100070 D0E032C083904001E0D200D2AFC0D07552
:100080 D018A87CF208B80F06C2AFC201801E8843
:100090 7CE824F954077807400214F84478539018
:1000A0 F84290E4C2AFF01582E8F0C28BC200D2F1
:1000B0 AFD0D0D083D082D0E032C083C0F075D032
:1000C0 187899C2AFC28CE58A24F7F58AE58C349A
:1000D0 D8F58CD28CE204F2D2AFD276789AE27064
:1000E0 0574C8F2D20D75F00A84E5F07002D20CE6
:1000F0 E214F220E010904001E4C2AFF0158274E7

Second and other section is bad

:100100 01FFD2FFD2FFE5FFA5FF11FF20FFE0FFB7
:100110 E2FF15FFE0FFE5FF74FFF0FF10FFC4FFF3
:100120 10FFFDFF08FF90FF06FFAFFFFCFFA3FFDE
:100130 D2FFFBFF30FF04FF11FFDAFF19FF17FFAB
:100140 F2FF19FF13FFECFF18FFF2FF19FF2CFF5E
:100150 19FF3BFF19FF02FFCDFF13FF78FFEBFFF5
:100160 F2FFECFFF2FFEFFFC2FF94FF92FF40FFB0
:100170 C3FF94FFEEFF04FF09FF83FFC0FFC0FF32

:100180 35FFFFFFFFFFFFFFFFFFFFFFFFFFFFFF49
:100190 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF6F
:1001A0 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5F
:1001B0 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF4F
:1001C0 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF3F
:1001D0 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF2F
:1001E0 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF1F
:1001F0 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF0F

Have you a idea of my problem ?

Thank's

Vincent

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