allocate xdata in bank x (bank switching method)

hi, is it possible to define a global (extern) structure in xdata memory i.e. bank 4 only ? i want to use the whole xdata ram (except common area) for this struct. i don't want to define a local struct...
allocate xdata in bank x (bank switching method)

hi, is it possible to define a global (extern) structure in xdata memory i.e. bank 4 only ? i want to use the whole xdata ram (except common area) for this struct. i don't want to define a local struct...
Determine code size when using bank switching

Is there an easy way to determine the size of the common and bank code space? Its probably really easy but I can't seem to find how...
Determine code size when using bank switching

Is there an easy way to determine the size of the common and bank code space? Its probably really easy but I can't seem to find how...
Which registers can I trash with user-defined bank switching?

Using C51 (v6.xx/7.xx) with user defined bank switching (mode 4), which registers must be preserved on the call and return? R1-R7 must be preserved on the call & return, since these pass parameters...