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/************************************************************************************
* arch/z80/src/ez80/chip.h
* arch/z80/src/chip/chip.h
*
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 __ARCH_Z80_SRC_EZ80_CHIP_H
#define __ARCH_Z80_SRC_EZ80_CHIP_H
/************************************************************************************
* Included Files
************************************************************************************/
#ifndef __ASSEMBLY__
# include <stdint.h>
#endif
/************************************************************************************
* 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 */
/* Include chip-specific regiser definitions */
#if defined(CONFIG_ARCH_CHIP_EZ80F91)
# include "ez80f91.h"
#elif defined(CONFIG_ARCH_CHIP_EZ80F92)
# include "ez80f92.h"
#elif defined(CONFIG_ARCH_CHIP_EZ80F93)
# include "ez80f93.h"
#else
# error "Register definitions not provided for this chip"
#endif
/************************************************************************************
* Public Data
************************************************************************************/
#ifndef __ASSEMBLY__
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C" {
#else
#define EXTERN extern
#endif
EXTERN uint32_t ez80_systemclock;
/************************************************************************************
* Public Function Prototypes
************************************************************************************/
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif
#endif /* __ARCH_Z80_SRC_EZ80_CHIP_H */
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