Can an EPROM burner read a ROM chip?

[DavidMil]

I am curious. Can an EPROM burner read a ROM chip, or will attempting to do that 'vaporize' one or both items?

 

DavidMil

[Rybags]

If it's capable of reading and the pinout is supported, ie same as an EPROM it can program then no reason why not.

Generally the pinouts of both should be the same for equivalent size/pin counts.

Some ROMs are in fact OTP EPROMS, essentially an identical chip but no window in the package to allow erasing.

[+Nezgar]

example: I was able to read a 16K 600 XL OS mask ROM in 27128 mode on my dropcheck reimaged ralf david eprom burner.

[+tf_hh]

There´s no complete answer... yes or no is possible,

 

Per default any EPROM burner can also read ROMs, but some ROMs are special. So the Atari O.S. ROMs for example. The 800 XL O.S. Rev.2 (CO1598B) is manufactured by a lot of vendors. Some of them can be read-out without issue if you select 27x128 EPROM in your burner. But some ROMs need a second chip select signal located at pin 27. Per default pin 27 is connected to +5 volts at all known Atari board revisions. But if your EPROM burner drag this signal to low (what is okay when using EPROMs to read them out), the O.S. ROM won´t let you read out the data.

 

If this occurs, just select 27x256, read out 32 KByte and use only the upper 16K