85 lines
2.9 KiB
C
85 lines
2.9 KiB
C
/****************************************************************************
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* arch/z80/include/z180/arch.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/* This file should never be included directly but, rather, only indirectly
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* through nuttx/arch.h (via arch/arch.h)
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*/
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#ifndef __ARCH_Z80_INCLUDE_Z180_ARCH_H
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#define __ARCH_Z80_INCLUDE_Z180_ARCH_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Types
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****************************************************************************/
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/* The z180 address environment is represented in hardware as the 8-bit
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* Common Base Register (CBR). CBR specifies the base address (on 4KB
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* boundaries) used to generate a 20-bit physical address for Common Area 1
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* accesses. CBR is the upper 8-bits of the 20-bit address; the lower
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* 14-bits of the base address are implicitly zero (hence the 4KB boundary
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* alignment).
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*/
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#ifdef CONFIG_ARCH_ADDRENV
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typedef uint8_t save_addrenv_t;
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/* At the task-level, the z180 address environment is represented as struct
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* z180_cbr_s which is defined in irq.h.
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*/
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struct z180_cbr_s;
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typedef FAR struct z180_cbr_s *group_addrenv_t;
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#endif
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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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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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ARCH_Z80_INCLUDE_Z180_ARCH_H */
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