baudrate with 11.0502 and T1 is max 57k6 not 19k2

I don't want to use timer2 which has a 16 bit autoreload because a) this code may be used on a very low end 8051
For a piece of code this simple, it does not make sense to code based on a "may"

I do not know what you are making, but it does not make sense these days to use "insufficient" processors.
...
An interesting topic of debate in its own right. I have spent the greater part of my career developing very low cost high volume products where it *only* makes economic sense to go with the the very cheapest (and usually barely sufficient) micro.
the price differential between a "basic" and "advanced" derivative is (at volume) so small that it take an awful lot of product to go beyond
engr hour $/volume < HW cost savings/unit
In additrion, it is known that, "fancy costsaving engineering" is more error prone than "straight engineering">

I am not advocating "go ahead and use a Rolls Royce when a VW will do, but, in my opinion. 95% of the efforts in saving HW cost are misplaced.

Erik