MAP_ADDR_6 Operator

Syntax

  MAP_ADDR_6(<operand>)

Description

This operator returns the lower 6 bits for a memory location. It should be used to determine the offset in the paging window for a certain memory address.Note that the operator automatically adds the offset of the base of the paging window ($C0).

Example

  MOV    #HIGH_6_13(data), $001F

  STA    MAP_ADDR_6(data)

In this example, the RS08 PAGE register (mapped at $001F) is loaded with the memory page corresponding to data and then the value contained in the accumulator is stored at the address pointed by data.