Z86E3016PSG Datasheet, PDF (324/348 Pages) Zilog, Inc. – Z86E3016PSG

Z8 Family of Microcontrollers
User Manual
306
sets the Register Pointer to access Expanded Register Bank F, Reg ← to
Reg 0Fh, as the current Working Registers. All references to Working
Registers now affect this group of 16 registers. These registers are now
accessed as Working Registers R0 to R15. Port Registers are now not
accessable.
Example
Assume the RP currently addresses the Control and Peripheral Working
Register Group and the program has just entered an interrupt service rou-
tine. The statement:
SRP 70h
Op Code: 31 70
retains the contents of the Control and Peripheral Registers by setting the
RP to 70h (01110000b). Any reference to Working Registers in the inter-
rupt routine will point to registers 70h to 7Fh.
Instruction Description
UM001602-0904