The Museum of HP Calculators

HP Forum Archive 13

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HP41CY???
Message #1 Posted by Ellis Easley on 2 June 2003, 8:35 p.m.

Ebay auctions are frequently discussed here (to the dismay of some!), what about a Museum Classified Ad?

http://www.hpmuseum.org/cgi-sys/cgiwrap/hpmuseum/adforum.cgi?read=10080

What in the world is an HP41CY?

      
Re: HP41CY???
Message #2 Posted by Gene on 2 June 2003, 10:41 p.m.,
in response to message #1 by Ellis Easley

It was an HP-41c that had undergone surgery to have a 2X speed up installed. Was switch selectable, I think. Had one once...was fairly unstable.

            
Sorry, completely wrong ! [Was: Re: HP41CY???]
Message #3 Posted by Raymond Del Tondo on 3 June 2003, 6:11 a.m.,
in response to message #2 by Gene

Hello Gene,

an HP-41CY is an upgraded HP-41CX. These were only available from W&W Software Products.

It has the 'Turbo' switch, of course, which nearly doubles it's CPU clock speed.

But the most important fact: It has a 64K RAM box built-in.

And about stability: Many years ago I helped making some Baustatik (civil engineering?) programs especially for the HP-41CY. Some of the programs forced bank switching to call routines from the other 32K block, and vice versa.

The machines and programs worked very well, and very stable.

Regards,

Raymond

                  
About W&W: another fact
Message #4 Posted by Vieira, Luiz C. (Brazil) on 3 June 2003, 9:04 a.m.,
in response to message #3 by Raymond Del Tondo

Hi;

W&W is the same German co. that produced the desirable CCD ROM (Computer Club Deutschland).

Just a small comment...

Luiz C. Vieira - Brazil

Edited: 3 June 2003, 9:05 a.m.

                        
Re: About W&W: another fact
Message #5 Posted by james (UK) on 3 June 2003, 9:06 a.m.,
in response to message #4 by Vieira, Luiz C. (Brazil)

Damn! Another ROM to lust after!

                              
Re: About W&W: another fact
Message #6 Posted by Vieira, Luiz C. (Brazil) on 3 June 2003, 11:16 a.m.,
in response to message #5 by james (UK)

Hi, James;

Haven't you been told about it? From CAT'1 to CAT'F to matrix operations, synth instructions and extended ALPHA characters included, brief report... Amazing module. Some contributors are fortunate owners...

Luzi C. Vieira - Brazil

                              
Re: About W&W: another fact
Message #7 Posted by David Smith on 3 June 2003, 3:45 p.m.,
in response to message #5 by james (UK)

Aye, lust mightily ye must. They are VERY hard to find and VERY expensive when you do. The last couple sold brought over $400 each... and worth every penny.

                        
Re: About W&W: another fact
Message #8 Posted by Raymond Del Tondo on 4 June 2003, 5:01 a.m.,
in response to message #4 by Vieira, Luiz C. (Brazil)

Yes, IMHO the CCD ROM is one of the most important HP-41 modules, besides X-Functions, HP-IL and HEPAX, of course;-)

Raymond

                  
Re: Sorry, completely wrong ! [Was: Re: HP41CY???]
Message #9 Posted by Gene on 3 June 2003, 9:46 a.m.,
in response to message #3 by Raymond Del Tondo

Oops! :-) Then I didn't have a 41CY. I had one with a built-in 2X switch, but not that lovely beast. :-)

      
Re: HP41CY???
Message #10 Posted by Juergen (CH) on 3 June 2003, 3:04 a.m.,
in response to message #1 by Ellis Easley

Matthias Wehrli has one:
http://www.hp-collection.org/Rechner/hp-41cy.htm

      
Re: HP41CY???
Message #11 Posted by Howard on 3 June 2003, 7:31 a.m.,
in response to message #1 by Ellis Easley

I would say Klaus is thanking you all as you have most probably doubled the price of his HP41CY calculator.

            
Re: HP41CY???
Message #12 Posted by Raymond Del Tondo on 3 June 2003, 7:54 a.m.,
in response to message #11 by Howard

However, I think we're supposed to give serious comments, aren't we? Ok, apart from some nice jokes, of course;-)

Raymond

      
Re: HP41CY???
Message #13 Posted by John Kercheval on 7 June 2003, 1:59 p.m.,
in response to message #1 by Ellis Easley

I have a 2X speed machine. Where can I get the 41CY name plate as shown in the photo?

John


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