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Bargain71 on eBay



#10

No, I'm not the seller. But it seems to be sort of misfiled, and a gent we all know is getting a nice bargain as things stand.


HP-71B with HHP 96K module on eBay


#11

it's on my watch list.

BTW, I'm about to put a couple of things on ebay. I've actually never sold anything there before; is it possible to prevent someone (you know whom) from bidding?

tnx


#12

eBay allows you to maitain a list of members who cannot bid on your auctions. The Help system can assisst you in finding the web page that helps you to block uyers. The searchkeywords are "block buyer".

Nami

#13

Site Map -> Blocked Bidder/Buyer List.

(Courtesy of Safari and "eBay Hacks")

#14

Why wouldn't you sell to (you know whom)? His money is as good as anyone's. (I'm not him.)


#15

You're not who? 8)

He blankets HP calculator auctions and occasionally finds a real bargain. He then turns around and offers the bargain for an outrageous premium, which he also sometimes gets. It's "buy low and sell high" with a vengance. In the abstract, I personally see nothing wrong with that, though several folks here would disagree. But emotionally, I just can't stand to see a seller, and then a buyer victimized by a serial capitalist. 8-| It's complicated for me because I'm something of a serial capitalist myself, but not on that scale. I like to sell for a profit, but I also respect the people I do business with, whereas this gentleman seems not to.

(My one and only eBay ID can be gleaned from my email address. I am NOT the guy selling this 71.)

Edited: 20 Nov 2005, 7:19 p.m.


#16

We'd all be silly if we didn't occasionally want to profit off of our sales. Oftentimes we get frustrated when we just want to unload an item and simply want to get our money worth or even take a loss in the name of finding an old calc a nice, new home to another collector. I can see how many here on this forum would be upset (me, too, at times!) with the high prices because the seller we're talking about always seems to have something that we want, but we don't want to spend too money on the (collectible) item. This seller has obviously cornered half the vintage HP calculator market. Honestly, though, his prices should be cut in half unless the item is "new" in box with all essentials.

As for the "bargin" 71B, I don't think calcs like this remain a bargin for long on Ebay! It's at $158.50 now and I predict it'll hit $200 before the auction ends.


#17

Hi, Stephen:

Stephen wrote:


"As for the "bargin" 71B, I don't think calcs like this remain a bargin for long on Ebay! It's at $158.50 now and I predict it'll hit $200 before the auction ends."

    Like I already said in an archived post, the HP-71B is a real gem, but it actually isn't that rare, there are tens of thousands of them still in existence because of a very large order (20,000) of HP-71Bs by the British NHS. If I recall correctly, all of them had HP-IL ROMs included and many also had Math ROMs as well. When they were deemed obsolete, they were sold en-masse for peanuts, as low as $US 50.00 or less, and at some HPCC meeting they were given for free to the attendants, you could chose your own from a large box containing them.

    By the way, I suggest to anyone thinking about getting an HP-71B to also do their utmost best to get hold of its Math ROM. Else you'll have an (HP-71B)/2 instead. And while you do get it, have a look at Emu71 from Jean-François Garnier, which comes complete with the HP-IL ROM and Math ROM images and all, and it's absolutely
    free, very convenient to use, and runs at awesome speeds (30-50x times the speed of a physical HP-71B), which makes the already incredible Math ROM functions all the more powerful.

Best regards from V.

#18

Thanks for the info on the 71B. It makes me want to get one now. If the Christmas season wasn't just around the corner, I would have bought that 71B that was in the link given in the first post,... just to add to my collection. In all honestly, I probably wouldn't use it routinely. It looked great, though!

#19

Hi,

is there a way to put the contents of the Math ROM in RAM? My 71 has plenty (128 MB in the card reader slot).

Marcus


#20

> My 71 has plenty (128 MB in the card reader slot).

er, make that 128KB? The 71 could only address 512KB, including ROM.


#21

Quote:
> My 71 has plenty (128 MB in the card reader slot).

er, make that 128KB?


Must have been wishful thinking; or my mind is totally spoiled by today's memory capacities...

Marcus

#22

Yes, of course!

The Math LEX has been extracted from ROM years ago, and is in one of the Swap Disks on this site.

J-F

#23

Specifically, on the 'ATCHO' disk in file 'MATHROM'


#24

So in theory I should be able to read the lexfile from emulated mass storage (EMU-71 & Christoph Klug's HP-IL card). I have to find the time to set it all up correctly.

Marcus


#25

Yes, that's how I get lex files on to my machines. Only, I use EMU41 to serve the virtual disks because it allows the external computer to be the loop controller. EMU71 must always be the loop controller itself. If you have a real 9114B, you can copy files to it using EMU71, then reconfigure the loop and copy the files onto a real 71.

Edited: 25 Nov 2005, 11:29 a.m.


#26

To download LEX or any file into your HP71 from a LIF disk image using Emu71 (with HPIL support), just do:

HP71B side:
CONTROL OFF (if not already done)
COPY :LOOP
Emu71 side:
RESTORE IO (if not already done)
COPY file:HDRIVE2 (or from any other drive)
COPY file TO :HP71

J-F


#27

Could I use the 82164A HP-IL/RS-232C Interface + Emu71 (with HPIL support)?


#28

At the moment, Emu71 doesn't provide native RS232 support. However, you could copy the LEX file to a DOS/Windows file (through Emu71's :DOSLINK device), it will automaticaly include the right LIF header, then use a communication tool to send this file to the HP-71B through the HP82164A interface.

This is a principle advice only and I can't give more details, I don't use this method (HPIL link is much more easier).

J-F


#29

Hi J-F,

This thread has got me thinking about something I've been confused about regarding EMU71 (which by the way is a *fantastic* tool that I plan to upgrade to full HPIL functionality). Is the MathROM actually included with (or is the ROM .BIN file available to load into) EMU71? I've read the instructions on your web site, and it indicates that you must dump the contents from an actual physical ROM (for copyright reasons, which makes complete sense). I've tried this and failed because the MathROM appears to be private and I don't have the alternate PEEK$ LEX file needed to unprivate the ROM. (in fact, I don't know which PEEK$ file is needed -- will the one on JPCROMD work? Apparently, the PEEK$ keyword was removed on JPCROM Ex).

But I've read in this thread and a number of times here in the Forum and in Datafile (Valentin's *superb* HP-71 articles) that the MathROM is *included* in EMU71, which seems to contradict the above.

Since I haven't yet found a MathROM file in the EMU71 download, I'm assuming the instructions on your web site still apply. But now I'm wondering, if the MathROM code is actually available in a LEX file on one of the swap disks (which I was unaware of until seeing the posts in this thread), doesn't that mean the ROM code is already in the public domain? It looks like I could download the LEX file into EMU71 RAM, but can a binary file be created to include it in ROM on EMU71 (without violating any copyright restrictions)?

Best regards,
Chris


#30

The Math LEX has been indeed available FOR YEARS on the Swap Disks, with no formal objection from HP, even when the HP-71B and the Math pac were still on the market. So, and at the request of some heavy duty HP-71B Math ROM users, I included the Math ROM in the HP71 ROM package (which is separated from the Emu71 package). Of course, if HP ever objects on this, I will remove them, but when I see the number of HP41 ROM now more or less freely available for (software) emulators or for module (hardware) emulators, I guess that HP definitively doesn't care of it.

And of course it doesn't mean that the Math ROM is public domain, it remains copyright HP.

J-F


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