hidden directory - hp 28s

[Raymond Del Tondo]

(06-07-2015 03:57 AM)Jake Schwartz Wrote:  

(06-05-2015 10:55 PM)Raymond Del Tondo Wrote:  Various general RPL mechanics can be found in earlier machines like the 28C/S or the 17B or the 42S, but the HP 48S series were the first to feature (nearly) the full range of object types, covered memory management, and much more.

Best Regards

I'd love to know about any relationship to RPL in the 42S, since it was classic RPN. Yeah, I'm sure it has a Saturn processor, but I don't remember every hearing "RPL" and the 42S in the same sentence.

Jake

The 42S actually is an RPL machine running a stripped-down version of the HP 48 OS (or a blown version of the 28S OS) , but it features a different UI than that of the 28/48 machines.

Even the internal matrix functions are nearly the same in the 42S and 48.

Many years ago I made a special 42S version of SAD (a Linux tool from Mika Heiskanen and Jan Brittenson for disassembling Saturn code) , which helped decompiling thousands of entries in the 42S.