Re: Any good programs for Algebra, Geometry, Trig, and Precal?

On Aug 11, 3:16 pm, "John H Meyers" <jhmey...@xxxxxxxxxxxxxx> wrote:
On Fri, 10 Aug 2007 22:49:47 -0500, DVHS wrote:
When I push :2:BK001 ARCHIVE it says that I have too few arguments.
I'm using algebraic mode btw.

In ALG mode, which the manuals tend to emphasize,
you must insert arguments in parentheses,
rather than before a command, e.g. ARCHIVE(:2:BK001)

Also, I've tried what the User's Guide
says :ARCHIVE(2:HOME1) and it still doesn't work because it says
Invalid Syntax. I don't know what is wrong here.

Doesn't the editor indicate where it first finds an error?

Compare what you just typed to what is above
(attention to where the colons [:] go)

Also, I've read in the User's Guide and it says something
about HOME directory contents not being able to be backed up, only "copied."
Are we just copying into the Flash ROM so that you can extract it later?

When you do a backup of your computer, to a tape or DVD, say,
what do you expect is happening?

Is it moving everything in your computer to somewhere else,
or is it making a restorable copy of the information?

Does the HOME directory contain everything (eq. library, CAT, units,
applications)? I viewed the HOME and it only contains units and Casidr
and some other things. Is this the only file that I should back up?

Installed libraries (including HP's Eq Lib) are already in some port;
most people store them into the flash port, which is the largest,
is preserved without battery power, and is hard to trash
(though not absolutely impossible to wipe out).

In addition, libraries are non-modifiable anyway,
which means that at worst, you'd only need to store the original again,
so your original copy (or a copy from the internet) is your backup.

Built-in functions (and their CATalog) are in ROM,
which is also a part of flash that's out of reach of errant programs,
and does not need backup (though you can download various
archived and/or "beta" rom versions that you can even re-flash).

What remains is whatever *you* have put in yourself,
or perhaps some downloaded programs that are stored into variables,
rather than into a port;
if you have never invested in putting anything in yourself,
such as your own programs, formulas, notes, or whatever,
then I guess you have nothing to back up!

Some people have gathered quite a lot of data and/or programs,
however, in which case they are concerned to have a quickly
restorable backup, rather than have to start again
from a "factory fresh" (and empty) calculator, which is
sort of like returning to a formerly fully furnished house,
and finding only the original bare walls :(

So... if I store it in FLASH directory then even if I receive a virus
or erase all of my memory I will still be able to access my FLASH
directory and retrieve everything I've stored in there?

Yes; it's just a semantic thing that the flash area
is usually called a "port," and is more like a storage locker,
containing non-editable things, whereas "directory"
usually means an easily edited variable in user memory,
with all the collected user variables
(plus any stored alarms and user keyboard assignments)
residing in what is called the HOME directory.

Good luck with your new "home."

[r->] [OFF]

Okay, I was able to successfully store my HOME directory into the
FLASH port. I'm just curious but what does the BK001 stand for? I know
that the :2: is the port and where you want to store the other file
but BK001 must symbolize the HOME directory?

So if I've stored my HOME directory in the port should I be safe to
download any of the files on hpcalc.org (that has a hp 49 symbol) onto
my calculator without any fear of data loss? I should be able to
retrieve all of my items after right? Also, I've read in the User's
Guide that you are able to write a code into the RPL (or something)
part of your calculator. There was a code to find the mean of a data
set and whatnot. Should I try to insert those into my calculator?

.

Relevant Pages

  • Re: Any good programs for Algebra, Geometry, Trig, and Precal?
    ... Installed libraries are already in some port; ... so your original copy is your backup. ... which is also a part of flash that's out of reach of errant programs, ... residing in what is called the HOME directory. ...
    (comp.sys.hp48)
  • Re: Flash Crash -- Lost items from Port 2 (flash) in 49G+ (again)
    ... [now we have a totally "clean" default HOME directory] ... Copy the default CASDIR into port 2. ... Please email me your email address, I will send you a file to completely format your flash.. ...
    (comp.sys.hp48)
  • [Full-disclosure] Design flaw in AS3 socket handling allows port probing
    ... Design flaw in AS3 socket handling allows port probing ... Due to a design flaw in ActionScript 3 socket handling, ... reachable from the host running the SWF, bypassing the Flash Player ... This event is always thrown when a Flash Player ...
    (Full-Disclosure)
  • Design flaw in AS3 socket handling allows port probing
    ... Due to a design flaw in ActionScript 3 socket handling, compiled Flash movies are able to scan for open TCP ports on any host reachable from the host running the SWF, bypassing the Flash Player Security Sandbox Model and without the need to rebind DNS. ... The problem with the SecurityErrorEvent is that it's thrown immediately when a Flash Player tries to connect to a closed TCP port. ...
    (Bugtraq)
  • Re: Any good programs for Algebra, Geometry, Trig, and Precal?
    ... because "one ROM fits all" ... PUSH:2:BK001 ARCHIVE ... into the Flash ROM so that you can extract it later? ... Does the HOME directory contain everything (eq. ...
    (comp.sys.hp48)