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/************************************************************************************
* arch/z80/src/z8/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 __Z8_CHIP_H
#define __Z8_CHIP_H
/************************************************************************************
* Included Files
************************************************************************************/
/************************************************************************************
* Definitions
************************************************************************************/
/* Hexadecimal Representation *******************************************************/
#ifdef __ASSEMBLY__
# define _HX(h) %##h
#else
# define _HX(w) 0x##h
#endif
/* Memory Map
*
* 64Kb Program Memory (64K series)
* C:0000 - C:0001 : Flash options
* C:0002 - C:0037 : Vectors
* : ROM data
* : Code
*
* 4Kb Register File (64K series)
* R:020 - R:0ff : 224 byte RDATA
* R:0e0 - R:0ef : 16-byte working register area (RDATA)
* E:100 - E:eff : 3.5 Kbyte EDATA
* f00 - fff : 256 byte control register area
*/
/* Special Function Registers *******************************************************
*
* Because of the many different ez80 configurations, we will rely on the
* ZDS-II header file, ez8.h, to provide the correct addresses for each register.
*/
/* Timer Register Bit Definitions ***************************************************/
/* Timer control register */
#define Z8_TIMERCTL1_TEN _HX(80) /* Bit 7: Timer enabled */
#define Z8_TIMERCTL1_TPOL _HX(40) /* Bit 6: Timer input/output polarity */
#define Z8_TIMERSCTL_DIV1 _HX(00) /* Bits 3-5: Pre-scale divisor */
#define Z8_TIMERSCTL_DIV2 _HX(08)
#define Z8_TIMERSCTL_DIV4 _HX(10)
#define Z8_TIMERSCTL_DIV8 _HX(18)
#define Z8_TIMERSCTL_DIV16 _HX(20)
#define Z8_TIMERSCTL_DIV32 _HX(28)
#define Z8_TIMERSCTL_DIV64 _HX(30)
#define Z8_TIMERSCTL_DIV128 _HX(38)
#define Z8_TIMERSCTL_ONESHOT _HX(00) /* Bits 0-2: Timer mode */
#define Z8_TIMERSCTL_CONT _HX(01)
#define Z8_TIMERSCTL_COUNTER _HX(02)
#define Z8_TIMERSCTL_PWM _HX(03)
#define Z8_TIMERSCTL_CAPTURE _HX(04)
#define Z8_TIMERSCTL_COMPARE _HX(05)
#define Z8_TIMERSCTL_GATED _HX(06)
#define Z8_TIMERSCTL_CAPCMP _HX(07)
/* Register access macros ***********************************************************
*
* The register access mechanism provided in ez8.h differs from the useful in other
* NuttX architectures. The following NuttX common macros will at least make the
* access compatible at the source level (however, strict type check is lost).
*/
#ifndef __ASSEMBLY__
# define getreg8(a) (a)
# define putreg8(v,a) ((a) = (v))
# define getreg16(a) (a)
# define putreg16(v,a) ((a) = (v))
# define getreg32(a) (a)
# define putreg32(v,a) ((a) = (v))
#endif /* __ASSEMBLY__ */
/************************************************************************************
* 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 /* __Z8_CHIP_H */
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