Hi,

I'd like to modify my cstartup.s03 file so it will put my bit variables in a predicyed state.

My compiler (IAR) doesn't allow initialization of bit variables so I want to clear them.

One 'dirty' solution would be to at the very begining of the startup file just clear the "byte adresses" 20h-2Fh which corresponds to "bit addresses" 00h-7Fh.
But I'd like to only clear the bits that are actually used as bit variables (one might want some bits to remain there values at a manual reset)

Why doesn't this code work?

MOV R0,#SFB(BITVARS)
SJMP CLEAR_BITVAR_2
CLEAR_BITVAR:
CLR R0
INC R0
CLEAR_BITVAR_2:
CJNE R0,#SFE(BITVARS),CLEAR_BITVAR



SFB(BITVARS) and SFE(BITVARS) resolves to bit variable addresses.

I suspect that the problem is in the "CLR R0" line.
I've also tested with "CLR @R0" but that results in: "Error[43]: Illegal effective address"