On Fri, 9 Mar 2018 14:13:40 +0000, bartc  declaimed the
following:


>
>Somewhat tidier than that for x64, which varies between Windows and
>Linux. Windows has the simpler one, and passes the first four arguments
>in rcx, rdx, r8 and r9.
>
>So not only are the registers not consecutive, but they couldn't even
>come up with a consistent naming scheme for the registers.
>

 CX and DX are likely historical carry-overs from the 8008/8080 (A, C,
D, H, L, with an X to indicate a wide register).


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 Wulfraed                 Dennis Lee Bieber         AF6VN
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