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Program Memory
instruction
instruction
your prompt
AVIEW
named instruction
Execution halts with your prompt displayed.
instruction
instruction
Program lines 03 through 05 and 11 through 13 of the program on page 10 shows an example of this usage.
Executing Programs Containing Wand Functions With No Wand Present
Remember from the beginning of this section that the wand functions only become available while the wand is plugged in. So if you
have programs stored in program memory that contain specific wand functions, and the wand is not attached, those wand functions
are nonexistent and that program will not execute properly (when a wand function is encountered, the display will show
). However, when you plug the wand back in and execute that program, it will execute properly. Here is how the
NONEXISTENT
HP-41C keeps track of these wand functions:
1. While the wand is in place, the function name appears normally in program memory, like this:
2. While the wand is removed, these functions are displayed in PRGM mode as a function called XROM. An XROM function
tells the HP-41C that the function belongs to some plug-in accessory. Next to the XROM function name are two numbers.
These indicate which accessory the function belongs to as well as an indicator of the function. So, the program line
(with the wand plugged in) would change to
function belongs to a plug-in accessory, and the
function number is
Programs containing these function have the following XROM numbers while the wand is removed:
(
).
01
WNDDTA
Function
WNDDTA
WNDDTX
WNDLNK
WNDSUB
WNDSCN
WNDDTST
HP 82153A - Wand Owner Manual - page 18
while the wand was removed. The
18 XROM 27,01
tells the system that that accessory is number
27,01
18 WNDDTA
XROM
XROM Number
XROM 27,01
XROM 27,02
XROM 27,03
XROM 27,04
XROM 27,05
XROM 27,06
, or
.
27 WNDSUB
18 WNDDTA
tells the system that the
(the wand) and the
27
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