99 lines
3.7 KiB
C
99 lines
3.7 KiB
C
/************************************************************************************
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* arch/z80/src/ez80/chip.h
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* arch/z80/src/chip/chip.h
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*
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* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************************************/
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#ifndef __ARCH_Z80_SRC_EZ80_CHIP_H
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#define __ARCH_Z80_SRC_EZ80_CHIP_H
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/************************************************************************************
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* Included Files
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************************************************************************************/
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#ifndef __ASSEMBLY__
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# include <stdint.h>
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#endif
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/************************************************************************************
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* Pre-processor Definitions
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************************************************************************************/
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/* Bits in the Z80 FLAGS register ***************************************************/
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#define EZ80_C_FLAG 0x01 /* Bit 0: Carry flag */
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#define EZ80_N_FLAG 0x02 /* Bit 1: Add/Subtract flag */
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#define EZ80_PV_FLAG 0x04 /* Bit 2: Parity/Overflow flag */
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#define EZ80_H_FLAG 0x10 /* Bit 4: Half carry flag */
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#define EZ80_Z_FLAG 0x40 /* Bit 5: Zero flag */
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#define EZ80_S_FLAG 0x80 /* Bit 7: Sign flag */
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/* Include chip-specific regiser definitions */
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#if defined(CONFIG_ARCH_CHIP_EZ80F91)
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# include "ez80f91.h"
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#elif defined(CONFIG_ARCH_CHIP_EZ80F92)
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# include "ez80f92.h"
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#elif defined(CONFIG_ARCH_CHIP_EZ80F93)
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# include "ez80f93.h"
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#else
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# error "Register definitions not provided for this chip"
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#endif
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/************************************************************************************
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* Public Data
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************************************************************************************/
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#ifndef __ASSEMBLY__
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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EXTERN uint32_t ez80_systemclock;
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/************************************************************************************
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* Public Function Prototypes
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************************************************************************************/
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif
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#endif /* __ARCH_Z80_SRC_EZ80_CHIP_H */
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