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 True USB Willem Programmer (GQ-2X, GQ-3X, GQ-4X)
 GQ-4x4 and 2732A chips
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rootuser

USA
6 Posts

Posted - 01/06/2021 :  21:58:33  Show Profile  Reply with Quote
Hello!

The GQ-4x4 fails burning BIN files to almost every type of 2732A I try.

First, all are verified erased.

Choosing the Fujitsu MBM2732A (which the chip is) does not work. Choosing any of the generic settings for 2732s does not work.

HN4622732G chips also do not work (generic settings or otherwise).

An Intel D2732A chip seems to work but NOTHING can seem to get Fujitsu or Hitachi chips working.

Any suggestions on burning these chips?
Reply #1

anniel

2529 Posts

Posted - 01/07/2021 :  11:55:49  Show Profile  Reply with Quote
quote:
Originally posted by rootuser

Hello!

The GQ-4x4 fails burning BIN files to almost every type of 2732A I try.

First, all are verified erased.

Choosing the Fujitsu MBM2732A (which the chip is) does not work. Choosing any of the generic settings for 2732s does not work.

HN4622732G chips also do not work (generic settings or otherwise).

An Intel D2732A chip seems to work but NOTHING can seem to get Fujitsu or Hitachi chips working.

Any suggestions on burning these chips?

Are you using external power?
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Reply #2

rootuser

USA
6 Posts

Posted - 01/07/2021 :  12:09:49  Show Profile  Reply with Quote
Thanks for the response!

I have tried with and without external 9V power.
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Reply #3

rootuser

USA
6 Posts

Posted - 01/07/2021 :  12:13:37  Show Profile  Reply with Quote
To add on.

I have tried this on different machines and had a friend try it with a different GQ-4x4 and both burners do the same thing. Different chips, different burners, no luck.
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Reply #4

anniel

2529 Posts

Posted - 01/07/2021 :  14:01:46  Show Profile  Reply with Quote
quote:
Originally posted by rootuser

Thanks for the response!

I have tried with and without external 9V power.

What is the error message?
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Reply #5

anniel

2529 Posts

Posted - 01/07/2021 :  14:02:23  Show Profile  Reply with Quote
quote:
Originally posted by rootuser

To add on.

I have tried this on different machines and had a friend try it with a different GQ-4x4 and both burners do the same thing. Different chips, different burners, no luck.

Are you sure your chips are good?
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Reply #6

rootuser

USA
6 Posts

Posted - 01/08/2021 :  01:08:24  Show Profile  Reply with Quote
The sheer number of different chips tried you'd think one of them would be good (30+ chips tried).

Like I said, the Intel D2732A work fine. Many different ones.

I'll get the exact stop message and post it here.
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Reply #7

anniel

2529 Posts

Posted - 01/08/2021 :  06:44:02  Show Profile  Reply with Quote
quote:
Originally posted by rootuser

The sheer number of different chips tried you'd think one of them would be good (30+ chips tried).

Like I said, the Intel D2732A work fine. Many different ones.

I'll get the exact stop message and post it here.

All the 2732A variants are treated the same.
Name="2732A(21V Vpp)",ID="XXXX",Class="2732(21V Vpp)",Category="EPROM",MFG="ALL(Generic)";
Name="AM2732A",ID="XXXX",Class="2732(21V Vpp)",Category="EPROM",MFG="AMD";
Name="MBM2732A",ID="XXXX",Class="2732(21V Vpp)",Category="EPROM",MFG="Fujitsu";
Name="D2732A",ID="XXXX",Class="2732(21V Vpp)",Category="EPROM",MFG="Intel";
Name="M2732A",ID="XXXX",Class="2732(21V Vpp)",Category="EPROM",MFG="SGS";
Name="M2732A",ID="XXXX",Class="2732(21V Vpp)",Category="EPROM",MFG="ST";
Name="TMS2732A",ID="XXXX",Class="2732(21V Vpp)",Category="EPROM",MFG="TI";

Where does your chip come from? Does it have a big die? You may have fake chips, try one you did not touch before as a 2732B. You can also try one as a 2732 if willing to take the risk of blowing it. Did you try lower speeds?
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Reply #8

rootuser

USA
6 Posts

Posted - 01/08/2021 :  13:43:45  Show Profile  Reply with Quote
The chips are not fake, the source is known good, BUT they are old, extremely. So it is possible the chips are bad. I have ordered more from China and locally including new old stock so let's see.

The spec sheet for Fujitsu for example says they will handle up to 21V on the Vpp so they should not blow but you never know with old chips. The faster chips handle up to 25V. Once I get the "new" chips I will test again.

The odd thing is, I can write Motorola S format to the chips just fine, but writing Bin format it fails. That is what is concerning me. This makes me wonder if there is some kind of speed mismatch. These old chips are slow.

Edited by - rootuser on 01/08/2021 13:44:48
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Reply #9

anniel

2529 Posts

Posted - 01/08/2021 :  17:25:49  Show Profile  Reply with Quote
quote:
Originally posted by rootuser

The chips are not fake, the source is known good, BUT they are old, extremely. So it is possible the chips are bad. I have ordered more from China and locally including new old stock so let's see.

The spec sheet for Fujitsu for example says they will handle up to 21V on the Vpp so they should not blow but you never know with old chips. The faster chips handle up to 25V. Once I get the "new" chips I will test again.

The odd thing is, I can write Motorola S format to the chips just fine, but writing Bin format it fails. That is what is concerning me. This makes me wonder if there is some kind of speed mismatch. These old chips are slow.

Try lower speeds.
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Reply #10

teamzr1

27 Posts

Posted - 01/08/2021 :  19:09:56  Show Profile  Reply with Quote
I just tried 2 days ago using AMD, and National brands
I tried 4 of each and have never been burned so new

All 6 failed, made no difference that the USB port of the P/C supports Version 3 USB to 1.1 and allows up to 1 amp current draw
as the 7 port USB board installed in slot of P/C and then gets connected right to the P/C power supply directly

Made no difference if selecting 2732, 2732A, 27C32 or NM27C32

Nor using an external 9 volt source

Also failed when selecting chip ID would come back saying chip not supported most times but fewer times comes back in red print saying needs external 21 V source when the E-prom has printed 12.5 volts

JR Team ZR-1
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Reply #11

anniel

2529 Posts

Posted - 01/09/2021 :  05:27:38  Show Profile  Reply with Quote
quote:
Originally posted by teamzr1

I just tried 2 days ago using AMD, and National brands
I tried 4 of each and have never been burned so new

All 6 failed, made no difference that the USB port of the P/C supports Version 3 USB to 1.1 and allows up to 1 amp current draw
as the 7 port USB board installed in slot of P/C and then gets connected right to the P/C power supply directly

Made no difference if selecting 2732, 2732A, 27C32 or NM27C32

Nor using an external 9 volt source

Also failed when selecting chip ID would come back saying chip not supported most times but fewer times comes back in red print saying needs external 21 V source when the E-prom has printed 12.5 volts

Selecting 2732, 2732A, 2732B, 27C32, 27C32A or 27C32B makes a huge difference.
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Reply #12

rootuser

USA
6 Posts

Posted - 01/11/2021 :  18:46:09  Show Profile  Reply with Quote
To follow up here is the error:

Write failed, Address=0x000000, Buffer=0x27 Device=0xFF

I have tried almost every combination and cannot get non-intel chips to work.

Fujitsu fail, AMD fail, Mitsubishi fail. All of them using any setting I throw at them.

On another note however, I was able to program 8 Intel used and NOS chips without issue. Intel chips, no matter what I throw at them seem to be fine.
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