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 True USB Willem Programmer (GQ-2X,3X,4X & GQ-4x4)
 TMS4764 / 2364		  New Topic  Reply to Topic
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ikrananka

6 Posts
Posted - 02/03/2019 :  13:58:37  Show Profile  Reply with Quote
Does anyone know if there is a way to read the above TMS 8K PROM chips with a GQ-4X? I can't seem to find any equivalent in the device library.
Edited by - ikrananka on 02/04/2019 13:38:51
Reply #1

anniel

2572 Posts
Posted - 02/03/2019 :  15:19:30  Show Profile  Reply with Quote
quote:
Originally posted by ikrananka

Does anyone know if there is a way to read the above TMS 8K PROM chips with a GQ-4X? I can't seem to find any equivalent in the device library.


Do they have standard JEDEC pinouts?
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Reply #2

ikrananka

6 Posts
Posted - 02/03/2019 :  15:54:53  Show Profile  Reply with Quote
They are standard 24 pin DIP EPROM chips.
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Reply #3

anniel

2572 Posts
Posted - 02/03/2019 :  16:26:00  Show Profile  Reply with Quote
quote:
Originally posted by ikrananka

They are standard 24 pin DIP EPROM chips.

If they are standard read them as a regular 27 series EPROM.
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Reply #4

ikrananka

6 Posts
Posted - 02/03/2019 :  16:32:38  Show Profile  Reply with Quote
All I get is a buffer full of FF.
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Reply #5

anniel

2572 Posts
Posted - 02/03/2019 :  17:19:23  Show Profile  Reply with Quote
quote:
Originally posted by ikrananka

All I get is a buffer full of FF.

Not standard then.
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Reply #6

ikrananka

6 Posts
Posted - 02/04/2019 :  07:58:44  Show Profile  Reply with Quote
Found some better info here. The one I want to read is the 2364A/4764 chip on the left.

Image Insert:

39653 bytes
Edited by - ikrananka on 02/04/2019 08:01:28
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Reply #7

anniel

2572 Posts
Posted - 02/04/2019 :  09:31:53  Show Profile  Reply with Quote
quote:
Originally posted by ikrananka

Found some better info here. The one I want to read is the 2364A/4764 chip on the left.

Image Insert:

39653 bytes

Ok, not a standard JEDEC pinout. Simply make yourself an adapter to convert it to a regular 27 series pinout.
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Reply #8

ikrananka

6 Posts
Posted - 02/04/2019 :  13:38:09  Show Profile  Reply with Quote
quote:
Originally posted by anniel
Ok, not a standard JEDEC pinout. Simply make yourself an adapter to convert it to a regular 27 series pinout.


Doh!!! I forgot about using an adapter. I bought one years ago, dug it out of hiding, and using this has allowed me to read the 2364/4764 ROM.

Thank you
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Reply #9

anniel

2572 Posts
Posted - 02/04/2019 :  15:13:42  Show Profile  Reply with Quote
quote:
Originally posted by ikrananka

quote:
Originally posted by anniel
Ok, not a standard JEDEC pinout. Simply make yourself an adapter to convert it to a regular 27 series pinout.


Doh!!! I forgot about using an adapter. I bought one years ago, dug it out of hiding, and using this has allowed me to read the 2364/4764 ROM.

Thank you


Good, well done!
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