Yeah, that's what was niggling me about this. The core of it I think is that unlike R/W, /RD and /WR include timing information, so there's really no way to go back and forth without conversion.

I suppose one for RC6502 leave the /RD and /WR signals as they are, put R/W elsewhere, and then ask CPU boards to generate both. But that seems like a bunch of extra work (and uses up a valuable signal line!) for dubious gain, when I think the same thing could be done anyway with a separate bus adapter that would sit on the RC6502 bus and generate RC2014 bus signals on its other side.

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Curt J. Sampson - github.com/0cjs

Yes an adapter looks like good idea, and keep r/-w and rdy as they are planned.

My plan is to provide a back plane for my CSA computer that has RC6502 slots, and I think I will then use jumpers to allow the use of RC2014 boards.
http://www.6502.org/users/andre/csa/

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Author of the GeckOS multitasking operating system, the usb65 stack, designer of the Micro-PET and many more 6502 content: http://6502.org/users/andre/