We're used to thinking of processors and systems as being 8-bit, 16-bit and so on. But on what basis?

Width of data bus? Pentium, regarded as a 32-bit platform, has a 64-bit memory interface so no.

Size of address space? 8088/8086 is regarded as a 16-bit platform, but has a 20-bit physical space, so no. Likewise the 32-bit Pentium Pro can address 48 bits with PAE

Size of registers? Pentium 3 is regarded as 32-bit, but has 128-bit SSE registers, so no.

I have no conclusion. What do you think?

Seeing @kalleboo 's O² effort unfold reminds me that I need my lab re-established to tackle my X68000.

Symptoms are that from "cold and dark", the soft power will cause the PSU to come on, but from then on, nothing elicits any kind of response. Cutting mains power and re-applying immediately results in the PSU being "on" regardless of switch state. Leaving it for a while gets back to the initial condition.

Also, the 68000 has a short burst of activity, then quiet with RST and HLT high. 1/2

The cool thing about [vendor]'s implementation of DDS (https://en.wikipedia.org/wiki/Data_Distribution_Service) is that it's a native library even in C#/Java apps, so is in theory very performant with a small memory footprint.

The less cool thing is that they seem to use sequence<type> in the IDL as an alias for a plain old C array of <type>.

The default size for a sequence is INT_MAX. Therefore the default malloc for a sequence<type> is "sizeof(type) * INT_MAX".

...so THAT'S where all my RAM went!