Hello Rick,
I hesitated to give an advice for a good programmer for some reasons,
sorry for being late, now.
I also bought the latest TL866II plus, from the original manufacturer,
which I can highly recommend for more recent non volatile components.
There's a long history behind this programmer, as older versions like
the CS had been copied by other Chinese ..uum.. garage companies, I
assume.. therefore the original manufacturer XGECU terminated all these
older versions some time ago, so I hope your CS version is
'compatible', or 'old stock', or you should make sure it is anything of
both, before attempting to make a firmware update.. as far as I
remember.. there's been a long discussion on eevblog about this
programmer, and stuck FW updates, especially on clones. Best is to avoid
these updates, anyhow.
The 2nd problem with the recent version which I have is, that it is not
able to program very old EPROMs which require high programming voltages
like 25V or even 21V, (I didn't test that yet on my old stock), so your
EPROMs might fall into this category.. and if the CS version (either
compatible or original) is still able to program one of these, I don't
know. The operating software will tell, hopefully, otherwise the eevblog
thread.
So my recommendation is, to carefully check the type of your old EPROMs.
I strongly assume that you will be able to safely read their content.
But you should order compatible newer EPROMs, OTPs, or FLASH parts,
which the programmer can handle for sure, i.e. search inside its parts
library, please.
Frank
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