We have an engineer who specializes in our old legacy automation systems. These systems use PLCs from various suppliers... but many of the PLCs are obsolete and can be configured only with a DOS based computer. We have been using an old Toshiba Satellite 100 CS with WIN98 that will let us boot into DOS. This works fine, but this machine is fading rapidly. The drive is fine... but looks like a motherboard is going.
I checked the internet and cannot find any second hand units for sale - part Yes, whole computer no.
What are other people doing in cases like this?