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HP42S functions
07-07-2020, 03:45 AM
Post: #1
HP42S functions
Is there a full and complete list of all of the HP42S functions? I don't have a manual and from what I can tell the online references don't have the list. I copied out a list of the functions from the calculator itself but I don't intuitively know what many of them are or how they're entered.
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07-07-2020, 12:26 PM
Post: #2
RE: HP42S functions
Manuals can still be purchased from eBay, there is one listed there almost every day.

Also, PDF versions can be found at Thomas Okken's excellent Free42 site, here:

https://thomasokken.com/free42/#doc

Look around while there, there are also lots of good programs listed, and other HP-42S related resources.

--Bob Prosperi
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07-08-2020, 09:42 AM
Post: #3
RE: HP42S functions
+1 with the link to Thomas' site.

On this site (or directly to this link: https://thomasokken.com/free42/doc/42s.pdf) you'll find José Lauro Strapasson's alternative user manuel for HP42s/Free42. Quite all commands are described, and chapter 14 lists all functions.

Regards.

Thibault - not collector but in love with the few HP models I own - Also musician : http://walruspark.co
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07-08-2020, 01:11 PM (This post was last modified: 07-08-2020 01:13 PM by Allen.)
Post: #4
RE: HP42S functions
I also like the "HP 42S Quick Reference Guide" by Dex Smith and TwentyEighth Street Publishing (HP part number 92222E.) Pretty Handy little pocket reference, but hard to find these days.

The original author recently had 72 "new old stock" cards, but ran out in May.

Pages 15-18 have a command listing with the command mnemonic and the proper function name. ( e.g. DECM -> Decimal Mode)

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07-10-2020, 01:24 AM
Post: #5
RE: HP42S functions
I wrote a short practice program for Free42 with output showing the time and date. This works fine, except that the time output is in 24-hour format, even though CL12 is set for a 12-hour format (which I have been led to believe is its purpose)

The references above have most of the functions, but not all...including CLK12 and CLK24.

Have I missed something basic?

00 ( 43-byte prgm )
01 LBL "CLOCK"
02 FIX 04
03 TIME
04 CLK12
05 STO "TIME"
06 VIEW "TIME"
07 DATE
08 ENTER
09 100
10 x
11 PSE
12 GTO "CLOCK"
13 .END.

The output shows:

TIME=HH.MMSS [continuusly updating each second]
x: MMDD.YYYY [static, updating once per day]
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07-10-2020, 03:21 AM
Post: #6
RE: HP42S functions
The ATIME command respects the CLK12 and CLK24 settings. So CLK12 "TIME: " TIME ATIME AVIEW should work (modify to taste).

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07-10-2020, 04:44 AM (This post was last modified: 07-10-2020 04:51 AM by Davidy.)
Post: #7
RE: HP42S functions
(07-10-2020 03:21 AM)Joe Horn Wrote:  The ATIME command respects the CLK12 and CLK24 settings. So CLK12 "TIME: " TIME ATIME AVIEW should work (modify to taste).
I couldn't get that to work either.
The command DATE, when entered directly from the keyboard returns the date formatted as MM/DD/YYYY (+DOW)
The command TIME, when entered directly from the keyboard returns the time formatted as HH:MMConfusedS (+AM or FM if CLK12 is set)
Neither of these return as shown if included in a program where only decimal results (mm.ddyyyy or hh.mmss)

Note above that a (colon) followed by a S shows up as a smiley face (!)
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07-10-2020, 06:21 AM
Post: #8
RE: HP42S functions
The exact behavior of the TIME and DATE functions is explained at https://thomasokken.com/free42/#time and also in the Time Module and HP-41CX manuals. The way the time- and date-related functions in Free42 behave was modeled after the Time Module.

It is correct that TIME returns 24-hour time to the X register, regardless of the CLK12/CLK24 setting. That setting affects what is displayed by TIME when executed from the keyboard, but not what it returns in the X register.
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07-10-2020, 12:49 PM
Post: #9
RE: HP42S functions
(07-10-2020 04:44 AM)Davidy Wrote:  
(07-10-2020 03:21 AM)Joe Horn Wrote:  The ATIME command respects the CLK12 and CLK24 settings. So CLK12 "TIME: " TIME ATIME AVIEW should work (modify to taste).
I couldn't get that to work either.
The command DATE, when entered directly from the keyboard returns the date formatted as MM/DD/YYYY (+DOW)
The command TIME, when entered directly from the keyboard returns the time formatted as HH:MMConfusedS (+AM or FM if CLK12 is set)
Neither of these return as shown if included in a program where only decimal results (mm.ddyyyy or hh.mmss)

But the time IS properly formatted into the Alpha register when you follow TIME in a program with ATIME. You then view it with AVIEW. Did you try that?

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08-18-2020, 06:35 PM
Post: #10
RE: HP42S functions
(07-08-2020 01:11 PM)Allen Wrote:  I also like the "HP 42S Quick Reference Guide" by Dex Smith and TwentyEighth Street Publishing (HP part number 92222E.) Pretty Handy little pocket reference, but hard to find these days.

The original author recently had 72 "new old stock" cards, but ran out in May.

Pages 15-18 have a command listing with the command mnemonic and the proper function name. (e.g. DECM -> Decimal Mode)

The original author has more for sale now. Search the website of an online market place for new and used items headquartered in California, whose name rhymes with "x-ray".

17bii | 32s | 32sii | 41c | 41cv | 41cx | 42s | 48g | 48g+ | 48gx | 50g | 30b

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08-18-2020, 11:15 PM
Post: #11
RE: HP42S functions
(08-18-2020 06:35 PM)Allen Wrote:  
(07-08-2020 01:11 PM)Allen Wrote:  I also like the "HP 42S Quick Reference Guide" by Dex Smith and TwentyEighth Street Publishing (HP part number 92222E.) Pretty Handy little pocket reference, but hard to find these days.

The original author recently had 72 "new old stock" cards, but ran out in May.

Pages 15-18 have a command listing with the command mnemonic and the proper function name. (e.g. DECM -> Decimal Mode)

The original author has more for sale now. Search the website of an online market place for new and used items headquartered in California, whose name rhymes with "x-ray".

The HP-42S QRG is available HERE
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08-25-2020, 06:23 PM (This post was last modified: 08-25-2020 06:24 PM by Fred Lusk.)
Post: #12
RE: HP42S functions
Allen...

Thanks for the link for the QRG sale. Mine is thrashed, so I ordered new ones to go with my 42S and DM42.

Fred
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08-26-2020, 08:32 PM
Post: #13
RE: HP42S functions
I have a HP-42S QRG, but wonder what to do with it. It's meant to go in the Pioneer sleeve/case with the calculator, but seems too tight a fit for my liking.

— Ian Abbott
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08-27-2020, 12:05 AM
Post: #14
RE: HP42S functions
(08-26-2020 08:32 PM)ijabbott Wrote:  I have a HP-42S QRG, but wonder what to do with it. It's meant to go in the Pioneer sleeve/case with the calculator, but seems too tight a fit for my liking.

It's a perfect fit, along with your 42S, in the leather cases HP sold for the Pioneer models. They came in black, brown, and oxblood (aka red). They show up regularly on eBay, but have gotten more expensive in recent years than many find reasonable, but patience (and a lot of searching) can net you one before too long.

--Bob Prosperi
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08-27-2020, 06:37 PM
Post: #15
RE: HP42S functions
(08-27-2020 12:05 AM)rprosperi Wrote:  
(08-26-2020 08:32 PM)ijabbott Wrote:  I have a HP-42S QRG, but wonder what to do with it. It's meant to go in the Pioneer sleeve/case with the calculator, but seems too tight a fit for my liking.

It's a perfect fit, along with your 42S, in the leather cases HP sold for the Pioneer models. They came in black, brown, and oxblood (aka red). They show up regularly on eBay, but have gotten more expensive in recent years than many find reasonable, but patience (and a lot of searching) can net you one before too long.

There are other cases that would probably work, such as this zip case for the HP 17bII+: https://www.amazon.co.uk/Protection-pock...B01MS6EWZ9

— Ian Abbott
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08-27-2020, 11:06 PM
Post: #16
RE: HP42S functions
(08-27-2020 06:37 PM)ijabbott Wrote:  
(08-27-2020 12:05 AM)rprosperi Wrote:  It's a perfect fit, along with your 42S, in the leather cases HP sold for the Pioneer models. They came in black, brown, and oxblood (aka red). They show up regularly on eBay, but have gotten more expensive in recent years than many find reasonable, but patience (and a lot of searching) can net you one before too long.

There are other cases that would probably work, such as this zip case for the HP 17bII+: https://www.amazon.co.uk/Protection-pock...B01MS6EWZ9

That case is new to me, and looks good.

It seems to be available in UK, but not in US (at least under that name) so likely a domestic UK manufacturer (or possibly importer). If you get one and it's nice, leave a comment about it. Thx.

--Bob Prosperi
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08-28-2020, 08:02 PM
Post: #17
RE: HP42S functions
(08-27-2020 12:05 AM)rprosperi Wrote:  It's a perfect fit, along with your 42S, in the leather cases HP sold for the Pioneer models. They came in black, brown, and oxblood (aka red).

These are after-market cases, right? When I bought my 42S back in about '92 or '93 it came with a crappy vinyl case that was really, really tight.

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08-28-2020, 09:18 PM
Post: #18
RE: HP42S functions
They were made by HP and sold as an accessory to the original calculators. The HP Part numbers for the Pioneer Cases were:
  1. 92169K - Black
  2. 92169L - Brown
  3. 92169M - Burgundy


I love these upgraded leather cases, and all/most of my collection lives in one.

17bii | 32s | 32sii | 41c | 41cv | 41cx | 42s | 48g | 48g+ | 48gx | 50g | 30b

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08-28-2020, 10:57 PM
Post: #19
RE: HP42S functions
(08-28-2020 09:18 PM)Allen Wrote:  They were made by HP and sold as an accessory to the original calculators. The HP Part numbers for the Pioneer Cases were:
  1. 92169K - Black
  2. 92169L - Brown
  3. 92169M - Burgundy


I love these upgraded leather cases, and all/most of my collection lives in one.

Yes, the HP leather cases are appropriate homes for all Voyager, Pioneer and Champion models. Scientific models are in Black, Business models in Brown and unique (16C or 27S) in Burgundy. The only better homes for Pioneers are the Astech cases, but they've gotten ridiculous.

The other Part Numbers are (in Black/Brown/Burgandy order, I'm fairly sure):

92169A/B/C are for the Voyagers
92169D/E/F are for the Champions (Clamshells)
92169G/H/J for the IR Printer
Above for Pioneers

Get them if you can, you will like them.

--Bob Prosperi
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08-29-2020, 08:19 AM
Post: #20
RE: HP42S functions
Thanks for the info, guys. I'll have to keep a look out for these. I even have a couple of Pioneers with no case at all so they could do with something like that.

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