MCUmall EPROM BIOS Chip Burner Forum
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werejag

USA
75 Posts
Posted - 12/20/2007 :  19:22:14  Show Profile  Reply with Quote
is this chip supported im now sitting on 10 m27c1000 from st and it doesnt seem to write to these.
Edited by - werejag on 12/20/2007 19:23:00
Reply #1

werejag

USA
75 Posts
Posted - 12/21/2007 :  03:10:36  Show Profile  Reply with Quote
had to swap oe and a16 to get the programer to work.
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Reply #2

ZLM

2947 Posts
Posted - 12/21/2007 :  09:55:51  Show Profile  Reply with Quote
It should be able to add this EPROM. Do you have datasheet of it?
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Reply #3

werejag

USA
75 Posts
Posted - 12/21/2007 :  10:33:04  Show Profile  Reply with Quote
yes it took a bit but found a copy

http://www.questcomp.com/PdfDir/D0224425.pdf

when you add it can i get an update? i really dont want to create a permanent adaptor dont have the parts yet to make a adapter.
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Reply #4

ZLM

2947 Posts
Posted - 12/21/2007 :  11:39:18  Show Profile  Reply with Quote
Add this line to devices.txt:

Name="M27C1000",ID="XXXX",Class="27C301",Category="EPROM",MFG="ST",RVpp="5V";

However, you need put a wire jumper between address header A23 to ZIF socket pin 24. And make sure they are contacted well.
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Reply #5

werejag

USA
75 Posts
Posted - 12/21/2007 :  11:44:22  Show Profile  Reply with Quote
so no need to make an adptor after this?
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Reply #6

ZLM

2947 Posts
Posted - 12/21/2007 :  11:45:59  Show Profile  Reply with Quote
No adapter needed if your chip DIP32 package.
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Reply #7

werejag

USA
75 Posts
Posted - 12/21/2007 :  12:06:03  Show Profile  Reply with Quote
yep dip 32

thanks for your help.
Edited by - werejag on 12/21/2007 12:06:27
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Reply #8

werejag

USA
75 Posts
Posted - 12/24/2007 :  16:33:00  Show Profile  Reply with Quote
http://bp1.blogger.com/_qkuiJgJSxI0/R3BOGIrr-8I/AAAAAAAAACk/JKonMR7h6dg/s1600-h/Image1.png

i get this error
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Reply #9

ZLM

2947 Posts
Posted - 12/24/2007 :  17:50:20  Show Profile  Reply with Quote
Does it always fail at the same location?

Please download the latest R2.05 software.
Check the Double-Write check box too.

Do a blank check before write.

Also, try without external power first.
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Reply #10

werejag

USA
75 Posts
Posted - 12/24/2007 :  17:56:02  Show Profile  Reply with Quote
quote:
Originally posted by ZLM

Does it always fail at the same location?

Please download the latest R2.05 software.
Check the Double-Write check box too.

Do a blank check before write.

Also, try without external power first.


\

yep fails at same spot both chips.

ill try the above
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Reply #11

werejag

USA
75 Posts
Posted - 12/24/2007 :  21:00:46  Show Profile  Reply with Quote
above worked without double write.

i will need to solder a access pin on pin24 becuase im doing a bunch of these
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Reply #12

ZLM

2947 Posts
Posted - 12/24/2007 :  23:50:55  Show Profile  Reply with Quote
Yes. You can solder a wire from A23 to PCB back side on ZIF pin 24. So that you can easily change the EPROM without link the jumper wire.
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Reply #13

werejag

USA
75 Posts
Posted - 12/25/2007 :  01:00:38  Show Profile  Reply with Quote
im doing these and 27c1001 27c160 27c800 eproms. so permanently tieing the line is alright? i wouldn't think so.
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Reply #14

ZLM

2947 Posts
Posted - 12/25/2007 :  19:09:47  Show Profile  Reply with Quote
You are right. The wire only needed for m27c1000.
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