cpu/mega/include/cpu/regs.h File Reference

AVR Mega CPU registers. More...

#include <io.h>

Go to the source code of this file.

Defines
#define	CPUR_RAMPZ   0x5b
	Extended Z Pointer.
#define	CPUR_EIND   0x5c
	Extended Indirect.
#define	CPUR_SPL   0x5d
	Stack Pointer Low.
#define	CPUR_SPH   0x5e
	Stack Pointer High.
#define	CPUR_SREG   0x5f
	Status Register.
#define	CPUR_SREG_I   (1 << 7)
	Interrupt Enable.
#define	CPUR_SREG_T   (1 << 6)
	Bit Copy Storage.
#define	CPUR_SREG_H   (1 << 5)
	Half Carry.
#define	CPUR_SREG_S   (1 << 4)
	Sign.
#define	CPUR_SREG_V   (1 << 3)
	Overflow.
#define	CPUR_SREG_N   (1 << 2)
	Negative.
#define	CPUR_SREG_Z   (1 << 1)
	Zero.
#define	CPUR_SREG_C   (1 << 0)
	Carry.
#define	cpu_read_reg8(reg)   mmio_read8((void *)(CPUR_##reg))
	Read the 8-bit CPU register reg.
#define	cpu_write_reg8(reg, value)   mmio_write8((void *)(CPUR_##reg), value)
	Write value to the 8-bit CPU register reg.

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Detailed Description

AVR Mega CPU registers.

Copyright (C) 2009 Atmel Corporation. All rights reserved.

Definition in file regs.h.

---

Define Documentation

#define cpu_read_reg8

(

reg

)

mmio_read8((void *)(CPUR_##reg))

Read the 8-bit CPU register reg.

Definition at line 62 of file regs.h.

Referenced by cpu_irq_save().

#define cpu_write_reg8	(	reg,
		value		)	mmio_write8((void *)(CPUR_##reg), value)

Write value to the 8-bit CPU register reg.

Definition at line 68 of file regs.h.

Referenced by cpu_irq_restore().

#define CPUR_EIND   0x5c

Extended Indirect.

Definition at line 44 of file regs.h.

#define CPUR_RAMPZ   0x5b

Extended Z Pointer.

Definition at line 43 of file regs.h.

#define CPUR_SPH   0x5e

Stack Pointer High.

Definition at line 46 of file regs.h.

#define CPUR_SPL   0x5d

Stack Pointer Low.

Definition at line 45 of file regs.h.

#define CPUR_SREG   0x5f

Status Register.

Definition at line 47 of file regs.h.

#define CPUR_SREG_C   (1 << 0)

Carry.

Definition at line 55 of file regs.h.

#define CPUR_SREG_H   (1 << 5)

Half Carry.

Definition at line 50 of file regs.h.

#define CPUR_SREG_I   (1 << 7)

Interrupt Enable.

Definition at line 48 of file regs.h.

Referenced by cpu_irq_is_enabled_flags().

#define CPUR_SREG_N   (1 << 2)

Negative.

Definition at line 53 of file regs.h.

#define CPUR_SREG_S   (1 << 4)

Sign.

Definition at line 51 of file regs.h.

#define CPUR_SREG_T   (1 << 6)

Bit Copy Storage.

Definition at line 49 of file regs.h.

#define CPUR_SREG_V   (1 << 3)

Overflow.

Definition at line 52 of file regs.h.

#define CPUR_SREG_Z   (1 << 1)

Zero.

Definition at line 54 of file regs.h.