am having troubles i can't track down, will buy a beer for anyone who can help
PIC16F1933
SWDTEN troubles

my understanding is that if i set the configuration to SWDTEN then i can turn the WDT on and off w/ bit0 of WDTCON

the programmer confirms i have "controlled by SWDTEN" in the config window

setting to WDT ON or OFF in config works as expected with regard to NAP
when WDT OFF in config
NAP 18
is sleep forever (i have IOC waking it up, works fine)
when WDT is ON
NAP 18
sleeps for 256 seconds and then moves on to next code line
both of the above are working great when i hard program WDT ON or OFF in config

but now i really need to have it both ways, sometimes NAP forever until IOC, in another section i need NAP to proceed after a time

so SWDTEN should be the ticket but i cannot get it to work
no idea if it is PBP3 or the chip, at this point i don't think it is me unless there is something i don't understand that is keeping WDT ON

it seems that i can turn WDT ON w/ WDTCON.0 = 1
but subsequently i cannot turn it off again with WDTCON.0=0
after WDTCON.0 = 0
NAP 12
just marches along after whatever time period 12 is (not long, i want it to sleep until IOC)

any ideas what might be doing that ?
by the way i can tell the bit is correct (0) it is just that WDT must be running anyway since NAP proceeds after the time

does clock switchover setting have any role ?
or Fail Safe Clock monitor (getting desperate as i have blown big time here)
both of those are off