Speed of HP-49G Routine for Tektronix Vector Graphics Terminal

[Werner]

A couple of remarks..
The gc does not update the Saturn RSTK. So if one happens during the PUSHhxs call, and the code has moved, you will not return to 'GOSUB label2' at all. So you will never end up with a difference. You will just crash.
You have only tested the low memory conditions; you should drop the large hxs, not the small one, so that after gc, you don't end up in the 'panic mode'. Back up your 49G first.
There are tons of assembly programs out there that guard against this gc problem, either by allocating memory up front, performing a gc before starting the code objects, or dropping into Sysrpl to perform a gc when needed. And then there's the version I used for LSORT, an invention of my own.

Cheers, Werner