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/************************************************************************************
* arch/z80/src/ez80/chip.h
* arch/z80/src/chip/chip.h
*
* Copyright (C) 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************************************/
#ifndef __EZ80_CHIP_H
#define __EZ80_CHIP_H
/************************************************************************************
* Included Files
************************************************************************************/
/************************************************************************************
* Definitions
************************************************************************************/
/* Bits in the Z80 FLAGS register ***************************************************/
#define EZ80_C_FLAG 0x01 /* Bit 0: Carry flag */
#define EZ80_N_FLAG 0x02 /* Bit 1: Add/Subtract flag */
#define EZ80_PV_FLAG 0x04 /* Bit 2: Parity/Overflow flag */
#define EZ80_H_FLAG 0x10 /* Bit 4: Half carry flag */
#define EZ80_Z_FLAG 0x40 /* Bit 5: Zero flag */
#define EZ80_S_FLAG 0x80 /* Bit 7: Sign flag */
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/* Memory Map */
/* Special Function Registers *******************************************************
*/
/* Timer Register Bit Definitions ***************************************************/
/* UART Register Offsets *************************************************************/
/* UART0/1 Base Register Addresses **************************************************/
/* UART Register Bit Definitions ****************************************************/
/* Register access macros ***********************************************************/
#ifndef __ASSEMBLY__
# define getreg8(a) (*(volatile ubyte *)(a))
# define putreg8(v,a) (*(volatile ubyte *)(a) = (v))
# define getreg32(a) (*(volatile uint32 *)(a))
# define putreg32(v,a) (*(volatile uint32 *)(a) = (v))
# define getreg(a) getreg16(1)
# define putreg(v,a) putreg16(v,a)
#endif
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif /* __EZ80_CHIP_H */