Clearing One or More Programs.......................................

13-23

The Checksum ................................................................

13-23

Nonprogrammable Functions ................................................

13-24

Programming with BASE .......................................................

13-24

Selecting a Base Mode in a Program.................................

13-25

Numbers Entered in Program Lines ....................................

13-25

Polynomial Expressions and Horner's Method..........................

13-26

14.Programming Techniques ..........................................

14-1

Routines in Programs ..............................................................

14-1

Calling Subroutines (XEQ, RTN) ..........................................

14-1

Nested Subroutines ...........................................................

14-2

Branching (GTO) ...................................................................

14-4

A Programmed GTO Instruction ..........................................

14-5

Using GTO from the Keyboard ...........................................

14-5

Conditional Instructions...........................................................

14-6

Tests of Comparison (x?y, x?0)...........................................

14-7

Flags ...............................................................................

14-9

Loops .................................................................................

14-16

Conditional Loops (GTO) ................................................

14-17

Loops with Counters (DSE, ISG) ........................................

14-18

Indirectly Addressing Variables and Labels..............................

14-20

The Variables "I" and "J" ...................................................

14-20

The Indirect Address, (I) and (J) .........................................

14-21

Program Control with (I)/(J) ................................................

14-23

Equations with (I)/(J) ..........................................................

14-23

Unnamed indirect variables..............................................

14-23

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