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53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
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/* Copyright (c) 2013-2016 Jeffrey Pfau
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef GB_SIO_H
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#define GB_SIO_H
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#include <mgba-util/common.h>
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CXX_GUARD_START
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#include <mgba/core/log.h>
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#include <mgba/core/timing.h>
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#include <mgba/gb/interface.h>
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#define MAX_GBS 2
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extern const int GBSIOCyclesPerTransfer[2];
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mLOG_DECLARE_CATEGORY(GB_SIO);
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struct GB;
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struct GBSIODriver;
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struct GBSIO {
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struct GB* p;
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struct mTimingEvent event;
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struct GBSIODriver* driver;
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int32_t nextEvent;
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int32_t period;
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int remainingBits;
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uint8_t pendingSB;
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};
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DECL_BITFIELD(GBRegisterSC, uint8_t);
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DECL_BIT(GBRegisterSC, ShiftClock, 0);
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DECL_BIT(GBRegisterSC, ClockSpeed, 1);
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DECL_BIT(GBRegisterSC, Enable, 7);
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void GBSIOInit(struct GBSIO* sio);
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void GBSIOReset(struct GBSIO* sio);
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void GBSIODeinit(struct GBSIO* sio);
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void GBSIOSetDriver(struct GBSIO* sio, struct GBSIODriver* driver);
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void GBSIOWriteSC(struct GBSIO* sio, uint8_t sc);
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void GBSIOWriteSB(struct GBSIO* sio, uint8_t sb);
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CXX_GUARD_END
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#endif
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