Table of Contents
Advertisement
Card Reader Operations
21
3.
Each time you read that program card, execution will automati-
cally begin at line 1 of the program on the card. To remind you that
the program is an automatic execution type, the HP-41C sounds
the beeper when execution begins. (The status of flag 11 is ignored
when the program card is read using [rsus) or (MRG).)
Here are some ways that you can use automatic program card execution.
1.
Use the first portion of the program on the card to initialize the
main program on that card and then halt execution so that you can
enter data or execute the main program. You can set the desired
flags and modes to prepare the calculator to execute the main
program.
2. Forrepetitive use of a card program, automatic program execution
makes it so you can execute the program without pressing any
keys.
3.
A program can be structured so that it immediately prompts you
when the card is read.
Data Card Operations
Data cards enable you to expand the data storage space in your HP-41C
to nearly limitless capacity (you are only limited by the number of cards
you have). There are two read and two write functions for data cards, as
well as a procedure for reading data cards.
Writing Data Onto a Card
The card reader has two functions for writing data cards:
and
(wotax]. Both of these functions are programmable (can be instructions
in a program) and can also be executed from the display.
Using (worax]. The
(write data as directed by X) function pro-
vides you with complete control of which data storage registersare to be
written onto cards. This function uses a number in the X-register to
control the data write operation.
Advertisement
Table of Contents
