[16C] why are some commands entered before their arguments?

[Valentin Albillo]

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Hi,

(03-25-2019 06:51 PM)cdmackay Wrote:  And perhaps that's also why the 16C doesn't have storage arithmetic, whereas the 15C does, given the 16C has lots of other new opcodes.

You can remove the "perhaps", that's exactly the very reason for the lack of storage arithmetic in the HP-16C and the other examples mentioned (HP-29C, HP-67, etc).

Also, the HP-15C has both one- and two-byte instructions so no lack of opcodes whatsoever, the number of possible opcodes vastly outnumbers the existing instructions by about two orders of magnitude.

V.
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