Manually drop bottom item in stack

[Steve Kallal]

I’m not sure if Free42 can handle this. I’d like a function that allows me manually drop the bottom item in the stack. I have an iPhone app named PCalc42 that does this in RPN mode as a “drop” button.But it’s only available on Apple platforms.

I don’t see anything similar in Free42. I find it handy but would prefer to use Free42 since it works in all my platforms.

I assume the HP42S didn’t have such a feature. And since Free42 is an emulator, it wouldn’t have it either. Or perhaps there’s a simple workaround with a few keystrokes?

Let know…

Steve

[Thomas Okken]

It sounds like you're looking for the DROP function. In the default 4STK mode, that function is not mapped to the keyboard, but you can find it in CATALOG → STK.

In NSTK mode, it replaces CLX as the action performed by the [←] key.

https://thomasokken.com/free42/#big-stack

[Steve Kallal]

I get the impression the HP42S hardware doesn't support CATALOG → STK → DROP. That's based on my not being able to find it in the official HP42S docs. Either I didn't search well enough in the official HP42S docs or it's a value added feature of Free42 not found in the original HP42S hardware.

Let me know which scenario is correct.

I do have the original hardware sitting around somewhere in a box purchased in the 90s. But I much prefer using Free42 on my iPhone.

[Thomas Okken]

It's not an HP-42S function. Free42 has a bunch of functions in addition to the HP-42S instruction set.

https://thomasokken.com/free42/#extensions