... the TRS-80 Model 100 work I'm progressing thru led me to other various "computers" that do basic similarly, and this particular calculator, the PC-G850V (and VS). It not only does basic programming, but assembler and C as well. That's impressive ...
Managed to order one off of ebay, as apparently the Japanese market (the only place they were sold?) is clearing them out; not sure what modern variant of calculator is being used for the children over there these days?
While sorting out the G850V stuff, I then ran across PockEmul, which, amongst dozens of other calculators (TI, HP, etc.), emulates the G850V to a T! Coming from the smartphone app world, the developer also has a PC/Desktop version, so I can run the G850V and test things. It easily does basic, assembler, and C, thru the calculator emulated interface. Very interesting, and the PockEmul developer is very responsive, and has authored a heck of a program, to emulate so many hard to find calcs and pc-calcs.
Like dosbox-x, pockemul is a very handy thing for emulating and resurrecting the old stuff ...