Those Dallas chips are not only a battery, but they also contain some SRAM and/or ROM. Therefore it makes sense that the system doesn't function at all without it, so it is possible that the only problem your system has, is the absence of the Dallas chip. Aside from the Dallas chip, it isn't uncommon for very old systems to not boot without a CMOS battery. I believe the Olivetti Philos doesn't even turn on without a CMOS battery installed for example, if I recall correctly.

I would advice you to test the system before removing the old battery (unless you see leakage) in the future. That way you can know for sure what issues the system may or may not have.

Nice one thanks i knew it was dead and i was checking for bulging caps before i powered it on so just pulled it out but yeah you are right should have tested it first thanks.

You're welcome, and good luck! 😀

Those Dallas chips are not only a battery, but they also contain some SRAM and/or ROM. Therefore it makes sense that the system doesn't function at all without it, so it is possible that the only problem your system has, is the absence of the Dallas chip. Aside from the Dallas chip, it isn't uncommon for very old systems to not boot without a CMOS battery. I believe the Olivetti Philos doesn't even turn on without a CMOS battery installed for example, if I recall correctly.

I would advice you to test the system before removing the old battery (unless you see leakage) in the future. That way you can know for sure what issues the system may or may not have.
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Hi do you know where I would be able to find a systems battery for this type of computer?