Panasonic MN1030 user manual Branching Instructions, Call Subroutine

Chapter 12 List of Machine Language Instructions

12.3.5 Branching Instructions

CALL Subroutine

Mnemonic	Description of operation
	label is either (d16,PC) or (d32,PC). Push the program counter containing the address
	of the next instruction and necessary registers onto the stack, secure the necessary
CALL label	stack area, and branch to the specified address.
	This instruction is used paired with either a RET or RETF instruction. This pair
	provides high-speed saving and restoring of registers to and from the stack and the
	securing and release of the stack area.
	Push the program counter containing the address of the next instruction onto the stack
CALLS (An)	and branch to the specified address. This instruction is used paired with a RETS
	instruction for table jumps and other situations where the registers to be saved and the
	size of the stack area are not known and for situations requiring backward
	compatibility with JSR.
	label is either (d16,PC) or (d32,PC). Push the program counter onto the stack and
CALLS label	branch to the specified address. This instruction is used paired with a RETS
	instruction for table jumps and other situations where the registers to be saved and the
	size of the stack area are not known and for situations requiring backward
	compatibility with JSR.
RET	Restore saved registers from the stack, free the stack area, and branch to the return
	address saved on the stack. RET is used paired with CALL and the funcinfo directive.
RETF	Restore saved registers from the stack, free the stack area, and branch to the return
	address stored in MDR. RETF is used paired with CALL and the funcinfo directive.
RETS	Branch to the return address saved on the stack. RETS is used paired with CALLS. It
	is also used to maintain backward compatibility with RTS.
JSR (An)	Push the program counter containing the address of the next instruction onto the stack
	and branch to the specified address.
JSR label	label is either (d16,PC) or (d32,PC). Push the program counter containing the address
	of the next instruction onto the stack and branch to the specified address.
RTS	Branch to the return address saved on the stack.
	RTS is used paired with JSR to maintain backward compatibility.
RTI	Return from an interrupt service routine.
	Restore the PSW stored on the stack and branch to the return address saved on the
	stack.
TRAP	Push the program counter containing the address of the next instruction onto the stack
	and branch to the predefined address (0x40000010).
	This instruction is used for system calls to the operating system and libraries.

List of Machine Language Instructions 243