2020-02-21 15:10:54 +01:00
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/****************************************************************************
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* boards/z80/ez80/z20x/include/board.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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#ifndef __BOARDS_Z80_EZ80_Z20X_INCLUDE_BOARD_H
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#define __BOARDS_Z80_EZ80_Z20X_INCLUDE_BOARD_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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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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/* Clocking
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*
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* The z20x CPU board has a 20Mhz crystal. The eZ80F92 has no PLL; the
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* system clock frequency is equal to the crystal frequency of 20MHz, the
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* maximum for the eZ80F92 part.
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*/
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#define EZ80_SYS_CLK_FREQ 20000000
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/* LEDs */
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/* The D3 GREEN LED is driven by an eZ80 GPI/O pin. However, it has some
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* additional properties:
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*
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* 1. On input, it will be '1' if the I/O expansion board is present.
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* 2. Setting it to an output of '0' will generate a system reset.
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* 3. Setting it to an output of '1' will not only illuminate the LED
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* take the card out of reset and enable power to the SD card slot.
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*
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* As a consequence, the GREEN LED will not be illuminated if SD card
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* support or SPI is disabled. The only effect of CONFIG_ARCH_LEDS is that
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* the GREEN LED will turned off in the event of a crash.
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*/
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#define LED_STARTED 0
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#define LED_HEAPALLOCATE 0
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#define LED_IRQSENABLED 0
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#define LED_STACKCREATED 0
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#define LED_IDLE 0
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#define LED_INIRQ 0
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#define LED_ASSERTION 0
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#define LED_SIGNAL 0
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#define LED_PANIC 1
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/* Button definitions
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* The z20x CPU board has no on-board buttons that can be sensed by the
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* eZ80.
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*/
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/****************************************************************************
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2021-03-18 09:57:48 +01:00
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* Public Functions Definitions
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2020-02-21 15:10:54 +01:00
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****************************************************************************/
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#undef EXTERN
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#if defined(__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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#if defined(__cplusplus)
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}
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#endif
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#endif /* __BOARDS_Z80_EZ80_Z20X_INCLUDE_BOARD_H */
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