1998' Robotron plotter renovation, part 2

The prophylactic UV EPROM 2716 replacement

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Description

Time ago was published the article about equipping the old-made (but not used) plotter Robotron REISS K6418 (CM 6415) with Bluetooth COM-port.

But folks are reminding, that UV EPROMs (here is M2716 type chips) have a limited guarantee time for storage of data. In the best consumer versions of UV EPROMs it is 25 years.

In prophylactic purposes, the new programmed Winbond W27C512 was installed in the plotter and works instead native 30-year old M2716 UV EPROMs.

Details

Time ago was published the article about equipping the old-made (but not used) plotter Robotron REISS K6418 (CM 6415) with Bluetooth COM-port.

But folks are reminding, that UV EPROMs (here is M2716 type chips) have a limited guarantee time for storage of data. In the best consumer versions of UV EPROMs it is 25 years.

Despite the fact the plotter is working fine now, it seems right at least to save UV EPROM's dumps in an archive.

Two things were made:

Step 1 - make dumps the Robotron's native M2716 UV EPROMs.

Step 2 - make the prophylactic EEPROM bank replacement using one Winbond W27C512 chip.

See "Diary" for details and files.

Discussions

Ken Yap wrote 02/16/2020 at 23:53

Your "diary" page doesn't work. I get this: This page isn’t working camper-assistant.com redirected you too many times.

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Dan Maloney wrote 02/07/2020 at 16:32

That's a great reminder to everyone to dump those images while you still can. It also makes me feel really old since my first kid was born in 1997. Thanks - I think ;-)

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