mirror of https://github.com/st3fan/ewm.git
71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
// The MIT License (MIT)
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//
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// Copyright (c) 2015 Stefan Arentz - http://github.com/st3fan/ewm
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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#ifndef PIA_H
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#define PIA_H
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#include <stdint.h>
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#include "cpu.h"
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#define EWM_PIA6820_DDRA 0
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#define EWM_PIA6820_CTLA 1
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#define EWM_PIA6820_DDRB 2
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#define EWM_PIA6820_CTLB 3
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#define EWM_A1_PIA6820_ADDR 0xd010
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#define EWM_A1_PIA6820_LENGTH 0x0100
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#define EWM_A1_PIA6820_KBD_DDR (EWM_A1_PIA6820_ADDR + EWM_PIA6820_DDRA)
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#define EWM_A1_PIA6820_KBD_CTL (EWM_A1_PIA6820_ADDR + EWM_PIA6820_CTLA)
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#define EWM_A1_PIA6820_DSP_DDR (EWM_A1_PIA6820_ADDR + EWM_PIA6820_DDRB)
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#define EWM_A1_PIA6820_DSP_CTL (EWM_A1_PIA6820_ADDR + EWM_PIA6820_CTLB)
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struct ewm_pia_t;
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typedef void (*ewm_pia_callback_t)(struct ewm_pia_t *pia, void *obj, uint8_t ddr, uint8_t v);
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struct ewm_pia_t {
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uint8_t ina;
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uint8_t outa;
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uint8_t ddra;
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uint8_t ctla;
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uint8_t inb;
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uint8_t outb;
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uint8_t ddrb;
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uint8_t ctlb;
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ewm_pia_callback_t callback;
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void *callback_obj;
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};
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struct ewm_pia_t *ewm_pia_create(struct cpu_t *cpu);
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void ewm_pia_destroy(struct ewm_pia_t *pia);
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void ewm_pia_set_outa(struct ewm_pia_t *pia, uint8_t v);
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void ewm_pia_set_ina(struct ewm_pia_t *pia, uint8_t v);
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void ewm_pia_set_outb(struct ewm_pia_t *pia, uint8_t v);
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void ewm_pia_set_inb(struct ewm_pia_t *pia, uint8_t v);
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void ewm_pia_set_irqa1(struct ewm_pia_t *pia);
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#endif
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