On 28/06/2018 18:02, Charlie Gibbs wrote:
> You should study the PDP-11 instruction set.  The first time I disassembled
> code that did stuff like this, I was dazzled by its elegance.  The Z80 doen't
> come anywhere near.

Where its successors (68000, ARM) fall down is in lacking the extra
layer of indirection on all addressing modes.

But a bit OTT in the case of the Data General Nova, where the MSB set
in an indirect memory reference means keep deferring  :-(

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