I'm interested in a useful scientific calculator emulator, and always liked those HP
calculators you mentioned (and especially have fond memories for the HP-45, for which
several emulators exist at the moment, e.g. https://sarahkmarr.com/retrohp1973.html, but
not any for any DOS AFAIK).
Three features from other calculators, though, might be worth including that make it more
suited to use on computers...
1. The HP10C etc has a "landscape" format that makes it more suited to PC
screens;
although I often prefer the usual "portrait" arrangement, may this could be a
user-settable option? (the arrangement of keys and so on on the screen
probably isn't
difficult to adjust compared with the workings on the underlying calculator
features?)
2. I liked one thing about the Sinclair Scientific (as one example), whereby two
different shift keys gave keys 3 different functions. This can match
keyboards with
"Shift", "Control" and "Alt" or whatever keys. I like to avoid mouse use
because of
RSI risks, so if it can use those keys it would be good... ideally: as soon
as you
press down a shift key it should change or highlight the appropriate
caption/legend
associated with the keys. For example: "alt" might change "cos" to "arccos".
3. The ability to make it programmable is tempting, but as a "maybe add later"
thought
to avoid weighing down the project so it cannot get off the ground. At this
stage
perhaps: reserve the PC keyboard function keys for later use for this?
What do you think?
How far along are you with CALCULA?
Mark Aitchison,
Christchurch New Zealand.
On 19/10/24 06:39, Ronald Hudson via Freedos-devel wrote:
Hi Everyone -
I am working on a version of CALCULA, an RPN calculator for DOS. It is roughly
equivalent in power to an HP35 or HP25 or HP11 - It is not programmable. Unlike HP my
calculator has a 26 level stack, and 26 storage registers. It has continuous memory
(via saving a status file on exit and loading it again on launch)
Is there any interest?
Ron Hudson
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