Fujitsu CM71-00101-5E User Manual

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CHAPTER 3  REGISTER DESCRIPTIONS
Return Pointer Configuration
Figure 3.3-11 shows the bit configuration of the return pointer.  
Figure 3.3-11  Return Pointer Bit Configuration
Return Pointer Functions
Return Pointer in Multiple "CALL" Instructions
Because the "RP" does not have a stack configuration, it is necessary to first execute a save when calling
one subroutine from another subroutine.
Initial Value of Return Pointer
The initial value is undefined.
Bit no. 
RP
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00