HP HP-16C - Subject Index

Function Summary and Index
(#B|Number of Bits.
Sums the bits in the
X-register and
returns that sumto
X. The stack does not
move (page 52).
Logical
(Boolean) operators.
(OR], [AND], and
BO_—R]operate onthe
binary values in the
X-and Y-registers
andreturn the
Boolean resultin the
X-register. (The stack
drops.) uses
only the X-register
(page 44).
Memory and
Storage
10 to .F, [1],
| Store. Places a
copy of the number
in the X-register into
the storage register
specified (pages 66,
69).
10 to .F, [1],
! Recall. Places
a copy of the number
in the specified
storage register into
the X-register
(pages 66, 69).
(xx1], Direct
and indirect Index
register exchanges.
Refer to Index
Register Control.
LSTx|LAST X
register. Recalls into
the X-register the
number that was in X
before the last
operation (page 23).
Memory
status. Temporarily
displays 1) the
number of instruc-
tions which may be
added to program
memory before
another seven lines
are allocated; and 2)
the number of
storage registers
currently available
for data storage
(page 65).
CLEAR [REG], CLEAR
Clear storage
registers, clear
program memory.
Refer to Clearing,
above.
Index Register
Control
[1]Index register (R)).
Storage register that
also can be used for
indirect program
execution (with
and [GSB))and
program loop control
(with [DSZand [15Z))
(page 68).
Indirect
operations. Used to
indirectly address
any storage register,
andis the only
means to address
those registers above
R ¢. The Index
register contains the
number of the storage
register (page 69).
[x%1]X exchange R;.
Exchanges the value
in the X-register with
the value in the Index
register (page 69).
Exchanges the
value in the X-
register with thatin
the storage register
indirectly addressed
by R; (page 69).
(Dsz],[15Z]Loop
counting and control
using R;. Refer to
Conditionals (page
124).
Programming
[P/R|Program/Run
mode. Sets the
calculator to Pro-
gram mode, for
entering program
lines, or Run mode,
for running programs
and performing other
operations (page
72).
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