2023-03-05 00:01:44 -05:00
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/*
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============================================================================
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NEC D65010G031 sound emulator
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by cam900
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This file is licensed under zlib license.
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============================================================================
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zlib License
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(C) 2023-present cam900 and contributors
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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============================================================================
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TODO:
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- needs hardware test
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*/
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#ifndef _D65010G031_EMU_H
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#define _D65010G031_EMU_H
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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struct d65010g031_square_t
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{
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unsigned char period; // Period (0 = Off)
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int counter; // clock counter
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signed short out; // output
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};
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struct d65010g031_t
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{
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struct d65010g031_square_t square[3];
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2023-04-10 20:19:12 -04:00
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signed short out[3];
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unsigned char ctrl;
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2023-03-05 00:01:44 -05:00
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};
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int d65010g031_square_tick(struct d65010g031_square_t *square, const int cycle);
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int d65010g031_sound_tick(struct d65010g031_t *d65010g031, const int cycle);
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void d65010g031_reset(struct d65010g031_t *d65010g031);
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void d65010g031_write(struct d65010g031_t *d65010g031, const unsigned char a, const unsigned char d);
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // _D65010G031_EMU_H
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