gnupic@linuxhacker.org

(ps. you're qmail setup doesn't properly demarcate your replies from the 
quoted text.)

On the discussion of an alternative way for abstractly accessing 
bitfields, scx31114 wrote:

> Try this
> 
> bitfield0	res	1
> bitfield1	res	1
> 
> _bit0	EQU	0
> _bit1	EQU	1
> _bit2	EQU	2
> ....
> _bit12  EQU   12
> 
> to access the byte
> bitfield#v( (_bitN ) /8 )
> 
> _bitN = _bit0 - _bit999
> 
> to access the bit
> (_bitN%8)
> or
> (_bitN&7)

Yes, This works!

For SDCC, it makes sense to write code like:

        BCF     bitfield#v( (_bit4 ) /8 ), (_bit4 & 7)
        MOVLW   1 << (_bit10 & 7)
        XORWF   bitfield#v( (_bit10 ) /8 ),F

For hand written assembly, it'd be nicer to write:

        BCF     bitfield(_bit4), (_bit4 & 7)

Where bitfield is defined to be:

#define bitfield(_bit) bitfield#v( (_bit ) /8 )

This doesn't work (with gpasm at least). As far as I can tell, gpasm 
doesn't fully support the #define directive.

Scott