Re: [CAD_CAM_EDM_DRO] FAILLING MEMORY ON MY CNC LATHE

Hi David,

If you're already having problems, and it IS the EPROMS, you don't want
what you have. Buy new ones, make a copy to CD, then you've got some
backup.

I'd find a buddy who likes to build imbedded controller applications,
maybe even a HAM. They can use a EPROM programmer to read your (GOOD)
EPROMS, and save them to CD. You might be able to find an EPROM
programmer in "Circuit Cellar" magazine (or similar). But expect to pay
about $50 - $100.

A further note, most code stored in EPROMS is done with a checksum.
This checksum validates the contents of the EPROMS upon startup of
whatever "system" it is running. Someone with an EPROM programmer can
"read" your EPROMS, and see/verify a checksum.

Thus, I'd expect a "BIOS checksum error" or similar message if you were
having a failure. The "BIOS" is of course the familiar name given to
the EPROM code in a PC. Yours will undoubtedly be different. You could
have bad RAM in the controller. Is there a diagnostic you can run?
What does your service manual say?

HTH

Alan KM6VV


mrdavidpontes wrote:

>
> Hi,
>
> Is it possiable to copy the programing from an EPROM and save
> it to an CD? I think my EPROM chips ARE SLOWING PASSING ON in my DYNA
> 3000 LATHE. The computer forgets a line,or a byte, then the lathe
> just stops,it don't what to do next. A friend told me to replace the
> EPROM's, but how do I reinstall the program in the chips? If the
> 27256 chips are bad in the lathe now, will I pass a bad program on
> the new chips? Any insight will be helpfull.
>
> david pontes
> mrdavidpontes@...