Panasonic F77G, MN101C77C user manual Addressing Modes, Psw

Chapter 2 CPU Basics

Table 2-1-4 Addressing Modes

Addressing mode

	Dn/DWn
Register direct	An/SP
	PSW
Immediate	imm4/imm8
	imm16
Register indirect	(An)

Effective address

-

-

150

An

Explanation

Directly specifies the register. Only internal registers can be specified.

Directly specifies the operand or mask value appended to the instruction code.

Specifies the address using an address register.

(d8, An)

(d16, An)

Register relative

indirect

(d4, PC) (branch instructions only)

(d7, PC) (branch instructions only)

(d11, PC)

(branch instructions only)

(d12, PC)

(branch instructions only)

15		0	Specifies the address using an address
			register with 8-bit displacement.
	An+d8
15		0	Specifies the address using an address
			register with 16-bit displacement.
	An+d16
17		0 H	Specifies the address using the program
	PC+d4		counter with 4-bit displacement and H bit.
			* 1
17		0 H	Specifies the address using the program
			counter with 7-bit displacement and H bit.
	PC+d7
			* 1
17		0 H	Specifies the address using the program
	PC+d11		counter with 11-bit displacement and H bit.
			* 1
17		0 H	Specifies the address using the program
	PC+d12		counter with 12-bit displacement and H bit.
			* 1

(d16, PC)

(branch instructions only)

(d4, SP)

Stack relative indirect

(d8, SP)

(d16, SP)

17	0 H
	PC+d16
15	0
	SP+d4
15	0
	SP+d8
15	0
	SP+d16

Specifies the address using the program counter with 16-bit displacement and H bit.

* 1

Specifies the address using the stack pointer with 4-bit displacement.

Specifies the address using the stack pointer with 8-bit displacement.

Specifies the address using the stack pointer with 16-bit displacement.

	(abs8)	7			0
Absolute					abs8
	(abs12)	11			0	Specifies the address using the operand
				abs12		value appended to the instruction code.
		15			0	Optimum operand length can be used to
	(abs16)					specify the address.
			abs16
	(abs18)	17			0 H
	(branch instructions only)		abs18			* 1
RAM short	(abs8)	7			0	Specifies an 8-bit offset from the address
					abs8	x'00000'.

I/O short	15	0
	(io8)	IOTOP+io8

Specifies an 8-bit offset from the top address (x'03F00') of the special function register area.

			Reuses the last memory address accessed
	(HA)		and is only available with the MOV and
Handy		-	MOVW instructions. Combined use with
			absolute addressing reduces code size.
			* 1 H: half-byte bit

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