How to use on-chip code banking and off-chip data banking for C8051F120 device from SiLABS.
Code Banking is described in: http://www.keil.com/support/docs/2845.htm If you need in addition also variable banking in xdata space, you might adapt the file XBANKING.A51. See also: http://www.keil.com/support/docs/2533.htm Reinhard