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From: madler on 3 Mar 2007 14:56
On Mar 3, 8:57 am, "Revolvr" <Revo...(a)cox.net> wrote:
> I think I'll try to get HPREAD working first - if it works in
> winXP the rest should be easy.

I'd be interested to know if it does. HPREAD was written in an era
when you could write real-time software on a PC -- HPREAD could and
did commandeer the 80286 processor it was written on. As long has
HPREAD gets the processor frequently enough to catch the bits on the
port, it might work on a modern machine.

You can still get an IR receiver at Radio Shack, though the price has
gone up a whole 20 cents from $3.49 to $3.69 in the last 17 years!

http://www.radioshack.com/product/index.jsp?productId=2049727&cp

> Otherwise the best route seems to be an HP-48G. Buying the calculator,
> serial cable and manuals for only $20-$40 would be quite a challenge. Any
> recommendations on where to buy?

It looks like HP-48G's are going for about $40 to $50 on ebay. You
should see if there's someone you can borrow one from. An HP-48S or
HP-48SX would do as well. There is an updated INPRT library here:

http://www.hpcalc.org/search.php?query=inprt

Mark Adler

From: Bruce Horrocks on 3 Mar 2007 16:49
Revolvr wrote:

> Otherwise the best route seems to be an HP-48G. Buying the calculator,
> serial cable and manuals for only $20-$40 would be quite a challenge. Any
> recommendations on where to buy?

Failing that, come to the next HHCC conference and one of us will bring
an IR printer. You can print the listings and then scan them into a PC!

Regards,

--
Bruce Horrocks
Surrey
England
(bruce at scorecrow dot com)
From: John H Meyers on 3 Mar 2007 16:53
Although it might get tedious for large programs,
what I did for mine was to read them in the display,
and type them into a plaintext file or email message,
although usually it went the other way -- develop
first on PC, then type into calc!

I have a small "awk" script which
[re]numbers lines of multiple programs in one list on a PC,
enabling me to create and/or edit programs on a computer.

Of course, these eventually had to be typed into the calc --
well, into several calcs, actually, because I have
three of them, and since data can be sent only one way
(calc to "printer"), each calc had to have a personal
secretary-typist (me) as an assistant :)

[r->] [OFF]
From: Christoph Giesselink on 6 Mar 2007 19:32
"Revolvr" <Revolvr(a)cox.net> schrieb im Newsbeitrag
news:SSnGh.1568$6P2.1278(a)newsfe16.phx...
> [..]
>
> I'm still tempted to transfer these electronically so I can use them on a
PC
> with something like Free42.
>

When you have the knowledge in PIC programming I definitely recommed to make
a Redeye receiver with the document Eric pointed to.

I done all my Romdumps of my Highend Pioneers and HP28 calculators with such
an interface connected over the RS232C port in the last years. In the early
90'ties I saved/printed all my data from a HP28S by this way to a PC before
I sold the calculator. So I was able to quickly restore my data to the HP28S
emulator I wrote years ago.

Another big advantage, you can make a HP42S romdump and use the Emu42
emulator to get the exact behavior of the original calculator.

Some words to a HP48G as REDEYE receiver with the INPRT program. I recently
updated my Clamshell ROM upload utility allowing the HP28 ROM upload in
parts. Therefore I tried a HP48G from my collection as receiver. I wasn't
able to get it working without errors. I changed back to one of my HP48GX
and everything worked fine. So my personal experience of this test is, that
not all of the HP48's are equal.

Cheers

Christoph


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