MCUmall EPROM BIOS Chip Burner Forum
MCUmall EPROM BIOS Chip Burner Forum
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c1pinse

Canada
2 Posts

Posted - 02/12/2009 :  15:47:16  Show Profile  Reply with Quote
Been trying to program this item and keep getting this error message;
error at 0x000000 chip = 0x04 buffer = 0xff.When i erase the chip is says "errased,then done the "blank check" and it gives this error.Have done over and over.Is there anywhere i can find meaning to this?Thanks all.P.S.Chip is SST49LF004A
Reply #1

ZLM

2937 Posts

Posted - 02/12/2009 :  20:13:08  Show Profile  Reply with Quote
Please let me know followings:

What programmer you are using?
What adapter you used?
Can you get ID correctly?
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Reply #2

c1pinse

Canada
2 Posts

Posted - 02/17/2009 :  06:46:01  Show Profile  Reply with Quote
quote:
Originally posted by ZLM

Please let me know followings:

What programmer you are using?
What adapter you used?
Can you get ID correctly?



I believe it is called Enhanced dual willeum.
I have the PDIP32 TO PLCC32 ADAPTER
IT ID'S AS A FUJITSU
IT WILL ERASE,READ.
AFTER THAT IT GIVES ERRORS.
SOME FOUMS ARE SAYING MY COMPUTER IS TOO FAST,NEED A SLOWER ONE.I HAVE A SMALL P4
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Reply #3

ZLM

2937 Posts

Posted - 02/17/2009 :  08:24:45  Show Profile  Reply with Quote
It is possible, try on slower machine. The parallel LPT port willem programmer speed depends on computer motherboard CPU speed. If the speed too fast, then the programmer may not work normally.

The True USB Willem GQ-3X, GQ-4X have eliminated this problem.
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Reply #4

MikeHunt79

United Kingdom
9 Posts

Posted - 12/02/2009 :  17:11:48  Show Profile  Reply with Quote
What's a good speed of machine to use?

I'm having the same problem, and have tried both a Core2duo machine at 2.6GHz, and an old Athlon laptop at 1.8GHz, both give me the same errors.

How much wood would a woodchuck chuck if a woodchuck could chuck wood?

Edited by - MikeHunt79 on 12/02/2009 17:12:09
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Reply #5

ZLM

2937 Posts

Posted - 12/03/2009 :  14:53:54  Show Profile  Reply with Quote
There ae nothing to do with the computer speed.

Here the Speed is not the computer speed. It is programmer software operation speed.

There are -2,-1,0,+1,+2 software speed setting.
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Reply #6

MikeHunt79

United Kingdom
9 Posts

Posted - 12/03/2009 :  16:12:39  Show Profile  Reply with Quote
Do you mean change tWP and tWC timings? I've experimented with these, but I'm still getting the same error as c1pinse. I'm also using a SST49LF040A flash mem chip, tho I think it could be bad...

Is there a list of where I can obtain a compatible replacement as nobody sells the SST49LF040 in the UK. :(

How much wood would a woodchuck chuck if a woodchuck could chuck wood?
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