43 lines
1.1 KiB
C
43 lines
1.1 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Mindscape Music Board emulation.
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*
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* Authors: Roy Baer, <https://pcem-emulator.co.uk/>
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* Jasmine Iwanek, <jriwanek@gmail.com>
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*
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* Copyright 2025 Roy Baer.
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* Copyright 2025 Jasmine Iwanek.
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*/
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#ifndef _SOUND_SND_MMB_H_
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#define _SOUND_SND_MMB_H_
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#define MMB_FREQ FREQ_48000
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/* NOTE:
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* The constant clock rate is a deviation from the real hardware which has
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* the design flaw that the clock rate is always half the ISA bus clock.
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*/
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#define MMB_CLOCK 2386364
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typedef struct ay_3_891x_s {
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uint8_t index;
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uint8_t regs[16];
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struct ayumi chip;
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} ay_3_891x_t;
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typedef struct mmb_s {
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ay_3_891x_t first;
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ay_3_891x_t second;
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int16_t buffer[SOUNDBUFLEN * 2];
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int pos;
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} mmb_t;
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#endif /* _SOUND_SND_MMB_H_ */
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