(16C) Mask and Sign Extend

[hth]

I keep going back looking at the PiDP-11, but while it is cool I have never used one and struggle to find motivate myself why I really need it. But I keep going back, looking and checking the forum about it.

While it is cool to look at and playing with the root of UNIX, any modern Linux or *BSD is probably a better choice for fun and they are easily found and dirt cheap today. If I played with the another OS on it like RT-11 it would be different.

Still, I found this interesting book (Lions' Commentary on UNIX 6th Edition, with Source Code) that I never heard of before while pondering over this: http://www.lemis.com/grog/Documentation/Lions/
It was "new" to me, so maybe it is new to others too?

There is a PiDP-10 in the works it seems, I have used those back in the days, but still... and the PDP-11 is way cooler looking and more historically significant.

In the end I always come down to not buying the PiDP-11. The little time I can spare is probably better to do with the HP-41 and AROS. Besides, I can always play with simh for a start on the RPi and that Lion's book interests me.

It is always good to see HP-16C programs, they are far between unfortunately. I could not resist making my version of it with Ladybug, but that is HP-41 so it is off-topic here. Maybe I post it later elsewhere.