@VintageProject Yes, being a 6502 (rather than Z80), the schematic is different but I took a quick look and they are both 39-pin backplanes and the pin assignment is virtually the same for both.
The #RC6502 can be built as an SBC (as I initially did) but also has a range of modules (including a clock board) to build it up on a backplane.
Nowhere near as sophisticated as the #RC2014 but then I come from a #6502 background (still have the #BBCMicro) and wanted to build it as a #Forth machine.

@retroreggie I just had a look at the schematic of the #RC6502. It at least looks similar, not the same, though.
The clocks are on the bus, indeed. That's where your separate back plane can feed a clock signal to the SBC, much like the #RC2014 does with its clock module.

@VintageProject If I am not mistaken, the #RC6502 shares a backplane layout with the #RC2014 so yes, the clock is there and could be fed externally.

Perhaps someone wiser than I on these things could confirm.

@VintageProject This is the #RC6502 I built. It has a W65C02 in it (required for #TaliForth2). I initially only built the SBC with a 1MHz xtal but added a backplane with power i/p. The Vero fudge-board has an 8MHz xtal & dividers but it will only run up to 4MHz (for now). #Forth is lightning fast at that speed though.

@VintageProject Or in fact build new stuff :-) Good luck with the #rc2014
I have just built it’s little cousin the #RC2040 (first machine I worked on was CP/M) and also an #RC6502 (ported #TaliForth2 onto it to learn #Forth)