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Re: Need assistance

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From Dennis Lee Bieber <wlfraed@ix.netcom.com>
Subject Re: Need assistance
Date Sat, 18 Jul 2015 17:44:02 -0400
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On Sat, 18 Jul 2015 19:51:00 +0100, mm0fmf via Python-list
<python-list@python.org> declaimed the following:

>
>Gawd it's so long but ISTR there were 3 stack registers and the display. 
>So you could press
>
>1 enter
>2 enter
>3 enter
>4
>
	Four: T, Z, Y, X

	T would duplicate as the stack dropped. X was the display after
operations (during data entry it was hidden)

>
>The 3 level stack was equivalent to nesting parentheses three times. I 
>only had a TI-59 as it was half the price of an HP67. The TI had more 
>memories and program steps and was faster. But it didn't say HP on the 
>front!

	The new units (HP28, 48, 49, 50, etc.) no longer use the 4-register
stack; the stack is whatever is available in memory. As a result, the Roll
instructions now need an argument for how many stack entries are in play.

	The HP50g has a bit of a sluggish response compared to the 48sx [which
is not equivalent to a 48g]. Might be since the 48sx is still a SATURN
hardware processor. The 50g is an underclocked (for battery life) ARM,
running a SATURN emulator, with the emulator running the RPL/RPN user
interface (there are packages that let one program in SYSRPL [which
bypasses all the user level data checks, so if one knows the data on the
stack is good, one can speed up subsequent operations], SATURN assembly,
AND ARM assembly).

	For $20 or so one can get the HP Prime as an Android app.
-- 
	Wulfraed                 Dennis Lee Bieber         AF6VN
    wlfraed@ix.netcom.com    HTTP://wlfraed.home.netcom.com/

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Thread

Need assistance craig.sirna@gmail.com - 2015-07-16 19:15 -0700
  Re: Need assistance Michael Torrie <torriem@gmail.com> - 2015-07-16 20:40 -0600
    Re: Need assistance craig.sirna@gmail.com - 2015-07-16 20:00 -0700
      RE: Need assistance "Joseph Lee" <joseph.lee22590@gmail.com> - 2015-07-16 20:12 -0700
  RE: Need assistance "Joseph Lee" <joseph.lee22590@gmail.com> - 2015-07-16 19:44 -0700
  Re: Need assistance Michael Torrie <torriem@gmail.com> - 2015-07-16 21:00 -0600
  Re: Need assistance Rob Gaddi <rgaddi@technologyhighland.invalid> - 2015-07-17 16:40 +0000
    Re: Need assistance Igor Korot <ikorot01@gmail.com> - 2015-07-17 12:54 -0400
    Re: Need assistance Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-07-17 20:00 +0100
  Re: Need assistance Denis McMahon <denismfmcmahon@gmail.com> - 2015-07-18 00:40 +0000
    Re: Need assistance Sibylle Koczian <nulla.epistola@web.de> - 2015-07-18 12:35 +0200
      Re: Need assistance Denis McMahon <denismfmcmahon@gmail.com> - 2015-07-19 00:59 +0000
        Re: Need assistance MRAB <python@mrabarnett.plus.com> - 2015-07-19 17:35 +0100
          flipping string order Denis McMahon <denismfmcmahon@gmail.com> - 2015-07-19 18:06 +0000
    Re: Need assistance Laura Creighton <lac@openend.se> - 2015-07-18 14:16 +0200
    RE: Need assistance "Joseph Lee" <joseph.lee22590@gmail.com> - 2015-07-18 09:05 -0700
    Re: Need assistance Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-07-18 12:18 -0400
    Re: Need assistance Mark Lawrence <breamoreboy@yahoo.co.uk> - 2015-07-18 18:34 +0100
      Re: Need assistance mm0fmf <none@mailinator.com> - 2015-07-18 19:51 +0100
        Re: Need assistance Joel Goldstick <joel.goldstick@gmail.com> - 2015-07-18 15:10 -0400
          Re: Need assistance mm0fmf <none@mailinator.com> - 2015-07-18 20:35 +0100
        Re: Need assistance Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-07-18 17:44 -0400
        Re: Need assistance Michael Torrie <torriem@gmail.com> - 2015-07-18 20:46 -0600
    Re: Need assistance Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2015-07-18 17:34 -0400
    Re: Need assistance William Ray Wing <wrw@mac.com> - 2015-07-18 14:28 -0400
    Re: Need assistance MRAB <python@mrabarnett.plus.com> - 2015-07-19 01:14 +0100
  Re: Need assistance craig.sirna@gmail.com - 2015-07-19 16:06 -0700
    Re: Need assistance Michael Torrie <torriem@gmail.com> - 2015-07-19 17:56 -0600
    Re: Need assistance Rick Johnson <rantingrickjohnson@gmail.com> - 2015-07-19 17:21 -0700
      Re: Need assistance Michael Torrie <torriem@gmail.com> - 2015-07-19 23:16 -0600
      Re: Need assistance Chris Angelico <rosuav@gmail.com> - 2015-07-20 15:25 +1000

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