[Elecraft] FORTH

[Don Brown]

Hi

I have and use regularly a HP-25 that is about 30 years old. The NiCad 
batteries failed many years ago so I mounted a 2.5 volt regulator made with 
a LM117 inside the battery box and power it with a wall wart. Once you learn 
RPN nothing else seems as easy. I also have a HP-28C and it programs with a 
sub-set of FORTH. If HP has dropped all of the RPN calculators from the 
line, one of the several aps for the palm may be the only place you can find 
it. I also have around here somewhere a little single board computer that is 
based on a 6809 with FORTH built in in firmware

Don Brown
KD5NDB

PS I have a Helix computer out in the garage now. It was the final 
generation of the SWTPC 6809 SS 50 buss computer. It probably still works 
although I have not tried to boot it in 10 years. It's OS was Flex, a much 
better design than CP/M in my opinion. I still make my living writing 6808 
assembly language for small controllers.

 Subject: Re: Re: [Elecraft] FORTH


> I'm holding on to my HP15C which I bought in college in 1987, still have 
> the receipt.  My boss here was looking for a good RPN calculator and 
> figured he might find that one on eBay cheap.  WRONG!  Turns out that very 
> good examples of it, complete with manual and case are about $300 to $400. 
> Even one with a broken LCD display was still over $100, more than I paid 
> for it new.  Not sure when (or why) HP discontinued it.  They still make 
> the financial version (HP12C) which is the same form factor, just 
> different button assignments.
>
> I also have an HP48G+ which is still RPN.  Not sure if it is still made or 
> not.  I got the '48 about 5 years ago.  Some of the '48s have expandable 
> memory slots, however, mine has 128k fixed RAM.  I've seen where people 
> have programmed it to use its IR port as a remote control!
>
> Hmm, wonder if the HP48 can be used to control the K2?
>
> Mark, NK8Q
>
>
> >From: Chris <chris at viking-house.com>
> >Date: Mon Apr 18 07:54:35 CDT 2005
> >To: Jessie Oberreuter <joberreu at moselle.com>
> >Cc: Elecraft <elecraft at mailman.qth.net>, Kevin Rock 
> ><kevinrock at earthlink.net>
> >Subject: Re: [Elecraft] FORTH
>
> >Are there any decent modern RPN calcs? I had a much loved HP32SII but I
> >lost it when I moved house and have not been able to find a decent
> >replacement. I have soft RPN calc on my palm, but I like proper buttons
> >to push.
> >
> >Chris - VP8BKF
> >
> >>
> >>
> >> and it will pring 27!  Every modern RPN calculator should come with a
> >> built in FORTH :).
> >>
> >>
> >