8051 Development Tools [ February 18, 2005 ]

When your application has
exhausted the standard 64K code space of the 8051, code banking
(or bank switching) can support applications up to 2 MBytes in
size (4 MBytes for the LX51 Linker). When you use code banking,
your program is divided into multiple banks of code. Each code
bank incorporates a common area and the bank area.

The Common Area is always available. It
must include the reset vector, the interrupt vectors, the
interrupt routines, and C run-time library routines. The common
area may include frequently called functions as well.

The Bank Area contains your program's
functions.

Refer to the following knowledgebase
articles for technical details about code banking.

• 
  
  C51: CREATING CODE BANKING PROGRAMS
  


• 
  
  BL51: THE CODE BANKING MECHANISM