HP HP-16C User Manual

Section 7: Programming Basics 77
words (numbers) in the Z- and Y-registers, and the word size
in the X-register. Given these values in the stack, the first
part of the program could then be:
Keystrokes
(g](LBL]A Word size in X-register.
Stack drops. The higher order word
: (from Y) is now in the X-register; the
lower order word (from Z) is in the
Y-register.
Direct Entry. Enter the data as needed as the program runs.
Write a (run/stop) instruction into the program where data
values are needed so the program will stop execution there. Enter
your data, then press to restart the program.
Program Memory
The HP-16C has 203 bytes available for data storage and program
lines. Program memory is automatically allocated from data
storage, seven bytes (for seven lines) at a time. Space for data
storage registers is decremented accordingly. Refer to the
explanation of memory allocation in section 6.
Program Instructions and Keycodes
Each digit, decimal point, and function key is considered an
instruction and is stored in one line (occupying one byte) of
program memory. Instructions that include prefixes (such as [f],
(sT0],[GT0], and [LBL]) still occupy only one line.
Each key on the HP-16C keyboard is identified in Program mode
by a one- or two-digit ‘“‘keycode”.
The first digit of a two-digit keycode refers to the row (1 to 4 from
top to bottom), and the second digit refers to the column (1, 2, ...,9,0
from left to right). The keycode for a digit key (including A to F) is
simply that digit. For example:
Instruction Code
(g](LBL]1
001-43,22,
1
({)SET COMPL[UNSGN] 002- 42 3 SET COMPL [UNSGN]
is 3"

HP HP-16C Specifications

General

Brand	HP
Model	HP-16C
Category	Desktop
Language	English