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Ax51 User's Guide

REGISTERBANK Assembler Directive

Abbreviation RB
Arguments REGISTERBANK (bank « , bank »)
Default Memory space is reserved for register bank 0.
µVision Options — A51 — Misc Controls.
Description 

The REGISTERBANK directive specifies the register banks that are used by the assembler module. Memory space is reserved for these register banks when the generated object module is processed by the linker.

See Also NOREGISTERBANK
Example 
A51 SAMPLE.ASM REGISTERBANK(0,1,2,3)

$RB(0,1,2,3)