I tried the following to see if the reslt of a substraction was negative...
movf        test, w
sublw       0x0x
btfss        w, 7        ; see if the MSB in W is set
do this
do that

but it did not work......
what works is
after the substraction

movwf      temp
btfss         temp, 7
di this
do that

Can anyone tell how come? Cannot bits in W be tested?

Henk Tobbe
VK2GWK