HP-25 Subroutines possible?

[Paul Dale]

(06-25-2017 10:58 AM)PANAMATIK Wrote:  But you are the only person I know with enough skills who could add subroutines to the HP-25 machine code. You can exceed the 2k program code limit, because in an emulator there is no limit.

Subroutines wouldn't have to be implemented as HP-25 machine code. The emulator could accept the keystrokes to insert unused op codes into a program and then intercept the op codes to do the GSB and RTN (and change the code to a NOP or a GTO nn). I'm not sure about displaying entered key codes.

Something that modifies the calculator's state (e.g. RCL arithmetic) might be more difficult to do.


Pauli