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 Support for ancient NEC D23256AC ?		  Forum Locked
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bitboy

USA
4 Posts
Posted - 11/07/2007 :  04:10:50  Show Profile
hello,
i am looking for advice and a programmer that supports read/write for the ancient NEC D23256AC or it's modern drop in equivalent ?

the chip is on a micro-controller board where the NEC ROM may be fried or possibly just scrambled. in either event you all know better than i what i need to do... copy a known good ROM image and write to the old ROM or a ROM replacement.

do the programmers have a way to stress / test a ROM ? is that even a good idea ?

Also, there is a static RAM chip (SRM2016C15) that maybe affected. Can that RAM be read / written / tested on the programmer as well , maybe it is too different a beast ?

image included in later post.
thanks for any useful help and advice,
bitboy
Edited by - bitboy on 11/07/2007 20:04:11
Reply #1

ZLM

2945 Posts
Posted - 11/07/2007 :  16:19:59  Show Profile
Checked the programmer device list, but no such device found. It may have other part number.
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Reply #2

bitboy

USA
4 Posts
Posted - 11/07/2007 :  19:56:16  Show Profile
quote:
Originally posted by ZLM

Checked the programmer device list, but no such device found. It may have other part number.


here is an image of chips if it helps.

Image Insert:

ram/rom ICs
Edited by - bitboy on 11/07/2007 20:00:44
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