HDTenEightyP/NetNews huggingface dataset:
From: willegen@research.ptt.nl
Newsgroups: comp.sys.hp48
Subject: Re: HP48 - questions and comments
Date: 15 Apr 92 07:29:24 GMT

In article <11413@mindlink.bc.ca>, Rob_Prior@mindlink.bc.ca (Rob Prior) writes:
> ] willegen@research.ptt.nl writes:
> ] 
> ] 
> ] How wide is that class-room? An HP48 gets to about 4-5 inches (20 cm) IR!!
> ] Someone I know is constructing an IR booster card, with IR-receiver AND
> ] Led (Recieve, amplify, transmit to original receiver). DON'T MAIL ME
> ] ABOUT IT, I'LL POST WHEN IT IS THERE (IF IT EVER WILL).
> 
> 
> I think it depends on a few parameters just how far the 48 will transmit...
> Mine has transmitted across a 15ft basement to control a big-screen TV as a
> remote.  I think that the main factor here is battery life, though... With new
> bateries in my calculator and a friends I can achieve about 3ft of separation
> between calculators during transfers.  When the batteries are old, however,
> this drops to the stated 4-5 inches.
> 
> ROb
> --
>  _______________________________________________________________
> |Rob Prior - President, Still Animation Logo Design, Burnaby, BC|
> |---------------------------------------------------------------|
> |            Mail to: a634@mindlink.uucp                        |
> |   ___  _        or: !uunet!van-bc!rsoft!mindlink!a634         |
> |  /__  /_\    "You must find us.... a shrubbery!!!!!!"         |
> |____/ /   \____________________________________________________|

The question here is not the transmitting power of the HP, but the receiving
one. Ofcourse you can send out from far (5 meters is OK with me), but the
receiver is much weaker. HP did this because the professors and teachers in
college asked them to do so, so pupils/students wouldn't be able to exchange
answers using the BI-DI IR IO (How's that for shorthands ;-)).

Christ
Newsgroups: comp.sys.hp48
From: mjg51721@uxa.cso.uiuc.edu (Michael James Gebis)
Subject: HP48 Viruses
Organization: University of Illinois at Urbana
Date: Thu, 9 Apr 1992 14:48:52 GMT

I have heard of HP48 Viruses, but more widespread are simple trojans...they're
so darn easy to make.  (Some bozo can just modify a program, pretty easily, to
do something nasty at a certain day.)
Fortunately, these programs almost NEVER spread very far...It's easy to catch,
so any program posted here is almost certainly free from trojans, but If I
were you, I'd watch out for things that you get from other users.  Especially
if they got the program from someone else.
As for ML viruses and trojans...hopefully, all the people who would want to do
this will instead try to make IBM and MAC viruses.  The HP has too small of a
user base to be a good target.
Of course, the easiest way to avoid fear is to back up the HP often.  :)
mIKE gEBIS   mjg51721@uxa.cso.uiuc.edu  OR   m-gebis@uiuc.edu

Newsgroups: comp.sys.hp48
From: FEE@waikato.ac.NZ (NAME DR. CONAN J. FEE, UNIVERSITY OF WAIKATO)
Subject: Re: Irrelevant stuff!!!
Organization: UNCW news/mail gateway service
Date: Mon, 6 Apr 1992 23:01:00 GMT



	I know this newsgroup is not moderated, but perhaps whoever's
in charge (is it you, Chris Spell?) could arrange to zap anyone who
posts irrelevant stuff (like Denon amplifiers for sale, etc...) with
about a zillion messages that'll choke up their email and tell them
to keep out of our newsgroup?

	I know this is maybe a bit over the top, but word will soon
get around that it's just not worth the bother to advertise on
this newsgroup unless it's HP48-related stuff.

Just a suggestion.

Regards to all bona fide HP48 people.
Conan
-----------------------------------------------------------------
Conan J. Fee			    _      fee@waikato.ac.nz
Centre for Technology              (_)o    
University of Waikato, Hamilton    /\  \   Phone: +(64)(7)8384206
Private Bag 3105, New Zealand              Fax:   +(64)(7)8384218
-----------------------------------------------------------------
From: fin@unet.umn.edu (Craig A. Finseth)
Newsgroups: comp.sys.hp48
Subject: Re: HP FTP Freshman
Date: 8 Apr 92 14:05:02 GMT
Article-I.D.: news2.1992Apr8.140502.22965
Organization: University of Minnesota, Networking Services.

In article <1992Apr7.232113.2284@ducvax.auburn.edu>, forrepr@eng.auburn.edu (Philip R. Forrest) writes:
|> I've had my 48 for 2 years (velcro, no line) and in all that time, I've
|> never imported an application into my beloved HP from someone that I did
|> not know. I was wondering...before I pull anything off the FTP, has anyone
|> here ever experienced a nasty thing such as a 48SX _VIRUS_ ?? The thought
|> of importing an alien program and having it eat all my other stuff doesn't
|> sit too well with me...

While it is possible to write a virus for any computer, I don't think
that a 48 virus would be terribly worth writing due to its slow
propogation time.  (You have to exchange RAM cards or serial data for
the virus to propogate.)

On the other hand, it is quite possible that some software can cause
you problems.  These can be either deliberate or inadvertent (i.e.,
bugs).

I suggest viewing 48 software just like any other: You should be able
to trace the history of each piece of software that you load.  Buying
from a reputable vendor, loading from a reputable archive site, or
obtaining it directly from the author are the best bets here.

In my opinion, by far the most likely source of problems will be
simple bugs.  Following this guideline puts you in the best position
for obtaining the next version.

Personally, I prefer to have the source for all programs.  This is not
always feasible, nor does having the source mean that I will take the
time to examine it for bugs, malicious code, or virii.  But hey, I'm a
user, too, and I can have preferences, even if they are irrational.

(I always supply full source with any software that I distribute, e.g.
Freyja and 48 programs.)

This probably isn't the answer that you were looking for...

Craig A. Finseth			fin@unet.umn.edu
1343 Lafond				Craig.Finseth@nic.mr.net
St Paul MN 55104-2437			+1 612 644 4027
USA
From: blaine@catt.ncsu.edu (Greyland Blaine Mull)
Newsgroups: comp.sys.hp48
Subject: wanna trade 28s for my 48sx+eq card??
Date: 8 Apr 92 14:23:55 GMT
Reply-To: blaine@catt.ncsu.edu (Greyland Blaine Mull)
Distribution: usa
Organization: NCSU CATT Program

hello, world\n

	I have an hp48sx and an EQ card that I purchased seperately and
they are both less than 7 months old.  I have all the boxes and
receipts!  Recently I have changed majors and I no longer need such a
beast, so I am looking to swap what I have for a 28s in excellent
condition with boxes, receipts, etc, for my gear and say
$150(negotiable).  Make offers to me at blaine@catt.ncsu.edu or call 
919-828-1937

-grey

 Grey Mull	       +Disclamer:  I didn't say it,-+  Macintosh
 blaine@catt.ncsu.edu  |   You didn't see me say it, |       to
 gbmull@eos.ncsu.edu   +---You can't prove anything!-+      NeXT...
NC State CATT Program				Steve Jobs continues...
From: s2859479@techst02.technion.ac.il (Yaron Keren)
Newsgroups: comp.sys.hp48
Subject: Numerical accuracy and Gram-Schmidt process
Date: 10 Apr 92 17:57:21 GMT
Reply-To: s2859479@techst02.technion.ac.il (Yaron Keren)
Organization: Technion, Israel Inst. of Technology


Lately I needed to do Gram-Schimdt process on the input

[ 1 -1 1 -1 ]
[ -1 -1 -1 -1 ]
[ 1 1 1 0 ]
[ 1 1 -1 -1 ]
[ 1 1 0 0 ]

I used an old program from the net (thanks to original unknown poster),

the results were surprising:

[ .707106781188 -.707106781185 -4.03043443329E-12 -8.98018190047E-12 ]
[ .632455532035 .632455532035 .316227766035 .316227765995 ]
[ -2.12132034356E-11 -2.12132034356E-11 .707106781183 -.707106781189 ]
[ -7.07106781188E-12 -7.07106781188E-12 -.707106781188 -.707106781188 ]
[ .707106781188 .707106781188 0 0 ]

I got base of five vectors to R4!

Debugging, I found out the problem was with the norm operation:

Due to inaccuracies in the process we get vectors like [1e-10 2e-10 -2e-10],

however, after normalization we get [1 2 -2]/sqrt(10) which is clearly wrong.

The solution was to check for the case of very low norm and multiply by zero

instead of dividing by the norm.

Output of new program:

[ .707106781209 -.707106781167 4.94974746832E-12 0 ]
[ 0 0 0 0 ]
[ -2.12132034356E-11 -2.12132034356E-11 .707106781183 -.707106781189 ]
[ -7.07106781188E-12 -7.07106781188E-12 -.707106781188 -.707106781188 ]
[ .707106781188 .707106781188 0 0 ]

Or{ginal program:

%%HP: T(3)A(R)F(.);
@ Gram-Schmidt Process
@ Example:
@ 3: [1 -1]     2: [1 2]    1: 2
\<< \-> s
  \<< 1 s
    FOR j DUP DUP
DOT \v/ /
      IF 2 s j - 1
+ \<=
      THEN 2 s j -
1 +
        FOR i DUP i
1 + ROLL SWAP DUP2
DOT * - i ROLLD
        NEXT
      END s ROLLD
    NEXT
  \>>
\>>

The new program:

%%HP: T(3)A(R)F(.);
@ Gram-Schmx)dt Process
@ Example:
@ 3: [1 -1]     2: [1 2]    1: 2
\<< \-> s
  \<< 1 s
    FOR j DUP DUP
DOT \v/ DUP 1E-7 \<= IF THEN DROP 0 * ELSE / END
      IF 2 s j - 1
+ \<=
      THEN 2 s j -
1 +
        FOR i DUP i
1 + ROLL SWAP DUP2
DOT * - i ROLLD
        NEXT
      END s ROLLD
    NEXT
  \>>
\>>


P.S. the DOT \v/ can be replaced by integrating and the program will create

orthonormal polynomails.
-- 
----
Yaron Keren                                 s2859479@techst02.technion.ac.il
Newsgroups: comp.sys.hp48
From: gmeltzne@jarthur.claremont.edu (manu)
Subject: Re: #D graph
Organization: Harvey Mudd College, Claremont, CA 91711
Date: Mon, 13 Apr 1992 04:07:52 GMT

In article <1992Apr3.190932.4065@Eyring.COM> ken@Eyring.COM (Ken Farnsworth) writes:
>
>The HP-48 can become a TV remote?  Could I get a copy of that code
>too?
>
>Ken Farnsworth


Send it to me too!!

(gmeltzne@jarthur.claremont.edu)

Thanks.

-Manu
-- 
Email: gmeltzne@jarthur.claremont.edu            
Do unto others before they do unto you.
"The future of the Arabs of Palestine was sacrificed to Egyptian politics"
						-Sir John Bagot Glubb
Newsgroups: comp.sys.hp48
From: stevev@miser.uoregon.edu (Steve VanDevender)
Subject: Re: hidden directory ???
Organization: University of Oregon Chemistry Stores
Date: 6 Apr 92 19:58:08

In article <1992Apr6.213906.4809@njitgw.njit.edu> dxs3726@hertz.njit.edu (Double Double) writes:

	   What is the hidden directory?  I've been this group for 
   about a month now, and every once in a while someone mentions
   the hidden directory.  It's not port 0, is it?

No, it's not.  The hidden directory is a directory object stored
in the HOME directory with a null global name.  If you can obtain
a null global name object on the stack, you can EVAL it to change
to the hidden directory.  There are also System RPL words for
storing, recalling, and purging variables in the hidden
directory.
--
Steve VanDevender 	stevev@greylady.uoregon.edu
"Bipedalism--an unrecognized disease affecting over 99% of the population.
Symptoms include lack of traffic sense, slow rate of travel, and the
classic, easily recognized behavior known as walking."
From: fee@waikato.ac.nz
Newsgroups: comp.sys.hp48
Subject: Re: Irrelevant stuff!!!
Date: 8 Apr 92 12:51:16 +1200
Organization: University of Waikato, Hamilton, New Zealand


In article <1992Apr7.224152.28010@ucsu.Colorado.EDU>, frechett@spot.Colorado.EDU (-=Runaway Daemon=-) writes:
> I have a question.  For those people that are getting these irrelevant posts,
> how many have you seen?  Give a rough estimate.. 2..5..15..50.. cause I 
> read c.s.hp48 at least twice a day and I can testify that I have not received
> even one post unrelated to the hp48.  s someone just mentioned, this might 
> be a local thing.  You might want to check the Distribution: header of one
> of these messages.  If it is in fact local to some region then might I 
> suggest that you use the same Distribution for discussion the problem.  It's 
> a little disconcerting listening to a discussion to which I can't relate.
> Thanks.
> 
> 	ian


Well, I've gotten maybe about 10 of these messages. I think they do come
from some automatic poster, as there is always two copies of the message
(usually consecutively posted) regardless of the author. Normally I
just delete them immediately without paying much attention to the
source. Next time I'll check it out and maybe post a sample (please
don't flame me for this!).

I don't know what you mean by "local". I live in New Zealand and these
messages originate in the States. Not exactly local.

Regards.
-- 
-----------------------------------------------------------------
Conan J. Fee			    _      fee@waikato.ac.nz
Centre for Technology              (_)o    
University of Waikato, Hamilton    /\  \   Phone: +(64)(7)8384206
Private Bag 3105, New Zealand              Fax:   +(64)(7)8384218
-----------------------------------------------------------------

Newsgroups: comp.sys.hp48
From: gmeltzne@jarthur.claremont.edu (manu)
Subject: Autoexec on an HP
Organization: Harvey Mudd College, Claremont, CA 91711
Date: Thu, 16 Apr 1992 07:35:11 GMT


	Can someone tell me how (if it's possible) to put a program in the
autoexec part of the HP, so that it boots up automatically when I turn it on.
Thanks in advance.
							-Geoff
-- 
Email: gmeltzne@jarthur.claremont.edu            
Do unto others before they do unto you.
"The future of the Arabs of Palestine was sacrificed to Egyptian politics"
						-Sir John Bagot Glubb
From: fee@waikato.ac.nz
Newsgroups: comp.sys.hp48
Subject: Softkey Function Transfer
Date: 8 Apr 92 14:21:20 +1200
Organization: University of Waikato, Hamilton, New Zealand


Does anyone know where the softkey grobs or labels lie within the 48 and
how to recall them? The 48 must have the info for it's menus somewhere
and I want to be able to get at them and display any or all of the
softkey labels in various parts of the screen (not just in the menu line)
possibly using a parameterised outer loop structure.

Also it would be nice if I could simultaneously reassign the particular 
softkey functions to other keys of my choice without the memory overheads 
required for a list of all softkey functions to be stored in RAM.

Is there a bunch of sysevals for the above? Can I recall any softkey grob
and assign the evaluation of it's function to a different key without using 
much RAM?

	eg: display the {MTH} softkey grob in the middle of the screen and 
		have it's normal function (showing MTH function softkeys)
		assigned to, say, the "TAN" key and ditto for any of the
		softkeys within the MTH menu?

Regards,
Conan.
-----------------------------------------------------------------
Conan J. Fee			    _      fee@waikato.ac.nz
Centre for Technology              (_)o    
University of Waikato, Hamilton    /\  \   Phone: +(64)(7)8384206
Private Bag 3105, New Zealand              Fax:   +(64)(7)8384218
-----------------------------------------------------------------
Organization: Penn State University
Date: Monday, 6 Apr 1992 14:18:34 EDT
From: mark <MDL111@psuvm.psu.edu>
Newsgroups: comp.sys.hp48
Subject: IR remote

Does anyone know if its possible to use the HP48SX as a remote control for a TV
 or VCR?  How would this be accomplished, commands, programs, etc?
From: shen@cae.wisc.edu (Shen Tan)
Newsgroups: comp.sys.hp48
Subject: Wanted - EduCalc part/catalog numbers and prices for ram cards
Date: 16 Apr 92 13:59:56 GMT
Article-I.D.: doug.1992Apr16.085956.18068
Distribution: usa
Organization: College of Engineering, Univ. of Wisconsin-Madison


  Hi,
   
    I've called and sent letters to EduCalc for their latest catalog, but
    it's been a week now and there's been no response yet.

    Could someone mail me the part/catalog numbers and prices for the
    different ram cards. If there are too many, I'm particularly interested
    in the 128k ram cards (TDS,CMT,HP). 

    My memory is way low now < 3k and I need to grab a ram card fast.
    I use all the stuff on it daily, so d/l to my pc isn't a real solution.

    Thanks

  Shen
  shen@cae.wisc.edu
From: willegen@research.ptt.nl
Newsgroups: comp.sys.hp48
Subject: Re: Program idea
Date: 15 Apr 92 08:27:44 GMT

In article <1992Apr15.024336.4729@news.uakron.edu>, r3bmp@VAX1.uakron.edu (Brian M Plumb) writes:
> Hp programmers:
> 
>      I have to copy my CD's onto tape to listen to them in my car. The
> hardest part of doing this process is figuring out the best possible
> combination of songs to get on a side. My idea is to put the track number and
> song time into a 2 x 2 matrix. Then on the next stack line place the *total*
> tape time and have the hp give back two matrices with the tracks that would
> best fit on each side. The time remaining on a side might be helpful too. 
>      If anyone feels like writing this possibly simple program I would be
> forever grateful (well at maybe grateful). I don't think this program should
> be too hard... in fact, if I ever get some free time I might actually try to
> write it. Good Luck!
> 
> **************************************************************************
> |                          Brian Plumb                                   |
> |       EE major, College of Engineering, The University of Akron        |
> |                     r3bmp@vax1.cc.uakron.edu                           |
> | "A condom wouldn't ruin the moment like a baby would." -me             |
> **************************************************************************
There already is such a program. It is called GSE. I don't know who wrote it,
but I have it (you can MAIL me first, THAN POST questions, I do have most
progs for the HP48 on disk).

Christ
From: d89-rbi@jaws.nada.kth.se (Ron Birk)
Newsgroups: comp.sys.hp48
Subject: Re: Pacman problem
Date: 8 Apr 92 10:26:47 GMT
Organization: Royal Institute of Technology, Stockholm, Sweden

In article <1992Apr4.192929.21908@usenet.ins.cwru.edu> al186@cleveland.Freenet.Edu (Mark Spaeth) writes:
>
>after finally getting pacman to work, i enjoyed playing it...
>
>but after doing some real work on my calculator, I tried
>playing it again, and when I died, I got an extra guy and I
>was moved up to the next level...
>
>anyone else have this problem?
>


Well there is a bug in the source. It takes for granted that the wordsize
is 64bits. Just change it back and it will work. Type: 64 STWS (or something
like that).

-------------------------------------------------------------------------------
Ron Birk d89-rbi@nada.kth.se (Royal Institute of Technology, Stockholm, Sweden)
-------------------------------------------------------------------------------
Newsgroups: comp.sys.hp48
From: jst50986@uxa.cso.uiuc.edu (Jack S. Tan)
Subject: Re: autoexec programs
Organization: University of Illinois at Urbana
Date: Thu, 16 Apr 1992 21:36:46 GMT

bgribble@jarthur.claremont.edu (Bill Gribble) writes:

>How about assigning the OFF key to execute a program like 

>\<< OFF Autoexec \>>

>Where Autoexec is the program you want evaluated on powerup? 

>Bill

Very nice solution.  I just tried it (HP48 - don't leave home without it),
and ran into a slight problem:  what if you are insdide another environment,
such as the EquationWriter?  Results:

Normal stack environment           Runs beautifully
EquationWriter, MatrixWriter,      Calculator fails to shut off; autoexec not
  cmd line with PRG flag             executed
Graphics Environment,              Calculator shuts off; autoexec not executed
  Interactive Stack                  (alpha key has been nulled in these
  Equation Catalog                    environments)

You may want to assign this off-autoexec button to a special key (say,
alpha-right shift ON as opposed to right shift ON).

Jack Tan
jst50986@uxa.cso.uiuc.edu
From: rrd@hpfcso.FC.HP.COM (Ray Depew)
Date: Thu, 9 Apr 1992 14:05:14 GMT
Subject: Re: Help me locate this person.
Organization: Hewlett-Packard, Fort Collins, CO, USA
Newsgroups: comp.sys.hp48

> 	I while ago I was getting messages form Ray depew.  He keeps a 
> mailing list of Atari-HP users.  It seems that his email address has changed
> If anybody out there knows it, please let me know.

I'm still here.  Just a little slow in getting things out.  It seems that my
paying job has gotten in the way of real work.  (insert smiley/frown here)

For any ST/48 users:  stay tuned.  I haven't forgotten.  I'm just a little 
slow.


Regards
Ray Depew
Hewlett Packard Co, Fort Collins, Colorado
rrd@hpfitst1.fc.hp.com
From: charliep@hpcvra.cv.hp.com (Charles Patton)
Date: Tue, 7 Apr 1992 16:02:43 GMT
Subject: Re: Why does my lib crash?
Organization: Hewlett-Packard Co., Corvallis, OR, USA
Newsgroups: comp.sys.hp48

Conan (FEE@waikato.ac.NZ) writes:

>>Hi,
>>
>>Can anyone give me a couple of pointers as to why a couple of sys_RPL
>>routines I created crash the 48 when implemented as a library when they
>>worked just fine when used from ordinary RAM?
>>
>>More info:
>>
>>I have 3 sys_RPL programs. They worked perfectly when used 
           ^^^^^^^
>>from ordinary RAM. 

   [stuff deleted]
>>
>>	This works fine as RAM object but when used as a variable within
>>a library, seems to complete the algorithm, but the RAM objects it creates are
>>corrupt. ie: The program creates the two new RAM objects GRB1 and LST1
>>but when I push their softkeys, the 48 crashes (ie: wipes memory
>>and gives "Try to recover memory?" message - always unsuccessful).

   [stuff deleted]

>>I created the library by creating $CONFIG, $ROMID, etc variables in the
>>same directory, then transferring (binary) up to my PC, executing USRLIB
>>and transferring back (binary) to the HP. Everything seemed fine.
>>
>>Did I do this wrongly? Should I have used MAKEROM instead of USRLIB?
>>

While USRLIB has turned out to be reasonably reliable, it would be rather
miraculous if it actually worked correctly with sys_RPL code since it relies
rather heavily on user-level structures for "hints" at finding identifiers
which need to be turned into rom-pointers, etc. If you have the 
rplcompile/makerom utilities, by all means, use them!

*******************************************************
** Charles M. Patton                                 **
**                                                   **
** charliep@cv.hp.com                                **
**      the usual disclaimers apply                  **
*******************************************************
Newsgroups: comp.sys.hp48
Subject: HP-Pacman in ENGLISG H
From: Steve_Grant@kcbbs.gen.nz (Steve Grant)
Date: 14 Apr 92 04:09:22 GMT
Organization: Kappa Crucis Unix BBS, Auckland, New Zealand

Yes I am interested in Pacman, I have'nt had any luck with ASC'ed programs 
or UUNCODED programs, so I am really pi....ed off. If you could send 
it so that it's not coded that would be great.
Steve
From: frechett@spot.Colorado.EDU (-=Runaway Daemon=-)
Newsgroups: comp.sys.hp48
Subject: Re: HP FTP Freshman
Date: 8 Apr 92 22:38:04 GMT
Article-I.D.: ucsu.1992Apr8.223804.2966
Organization: University of Colorado, Boulder

In article <1992Apr7.232113.2284@ducvax.auburn.edu> forrepr@eng.auburn.edu writes:
>I've had my 48 for 2 years (velcro, no line) and in all that time, I've
Let's clear this up right now.. I am absolutely 100% positive that you will not
get a line on your display if you have a velcro case.  For everyone else who
is saying that they don't have a line, it might depend on how much the padding
between the book and the calc is folded over and how you carry your calc. 
Also, it's not a very obvious thing.  I've gotten so that I can recognize it at
about 3 feet but most people have to play with it for a while to see the worn
(and as someone suggested polished) spot on the screen.  

>here ever experienced a nasty thing such as a 48SX _VIRUS_ ?? The thought
>of importing an alien program and having it eat all my other stuff doesn't
>sit too well with me...
Unfortunately, there is such a beast.  I don't remember exactly how it spreads
but it is VERY small and the design is pretty clever.  It will make your
calculator crash.  There is a program to clean it out of your calculator.

It's not over overwhelming concern though as it is not very widespread at all.

>
>Phil Forrest - A NASA/JSC Co-op student who hates being back at school :-(


	ian

-=Runaway Daemon=-
Newsgroups: comp.sys.hp48