And with the adapter card replacing the processor, and projecting to the left of the PSU, what comes into view but (wait for it) the 030 PDS slot, or cache slot. But you are right. It isn't there unless someone puts it there deliberately, although it ends up in nearly enough the same position as the IIci's. I was seeing a IIci in my mind's eye as I wrote about a IIcx.

In my defence: I did at least go and fossick around in a IIcx to find the grid position of the W1 header for the ROM ...

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