Multi (i) register techniques help, please.

[Dieter]

(05-30-2018 08:42 PM)Matt Agajanian Wrote:  Hi there. Given that the HP-67 and 34C used only one I register, what are your tips & techniques for using the I register for multiple indirect registers? Thanks in advance.

There is one obvious solution: Use the registers you want and store them into I before the indirect command.

Example: multiply the contents of the registers indexed by R3 and R4.

Code:

RCL 3
STO I
RCL(i)
RCL 4
STO I
R↓
RCL(i)
x

Don't like this? Get a 35s (two index registers). Or an HP41/42 (essentially any register can be used for indirection).

Dieter