Radio Shack Pro-2032 Specifications download pdf (Page 56)

• Nesting

Similar

to

the

FOR-NEXT

statement, GOSUB statements

can

also

be

stacked. The

number

of

times the subroutine

is

called

out

is

fixed.

This nesting

can

be

performed up

to

8 levels. Consequently, a subroutine

can

be

called

out

from

a subroutine.

Main routine

Subroutine

Subroutine

Subroutine

Main routine

1

st

level

2nd

level

3rd

level

Subroutine

Subroutine

In this example,

the

subroutines

are

not

stacked so

you

can use

as many as

you

like.

This example shows

three

levels

of

nesting. Up

to

8 levels can

be

stacked.

A subroutine

is

convenient

for

assembling common portions

of

a main

routine

in order

to

save

the number

of

steps or

for

assembling portions separately

as

subroutines when

assembling a complicated program.

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