mirror of https://github.com/mgba-emu/mgba.git
53 lines
1.0 KiB
C
53 lines
1.0 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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#include "io.h"
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#include "gb/gb.h"
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void GBIOInit(struct GB* gb) {
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memset(gb->memory.io, 0, sizeof(gb->memory.io));
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}
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void GBIOWrite(struct GB* gb, unsigned address, uint8_t value) {
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switch (address) {
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case REG_IF:
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gb->memory.io[REG_IF] = value;
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GBUpdateIRQs(gb);
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return;
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case REG_LCDC:
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// TODO: handle GBC differences
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GBVideoWriteLCDC(&gb->video, value);
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break;
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case REG_IE:
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gb->memory.ie = value;
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GBUpdateIRQs(gb);
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break;
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default:
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// TODO: Log
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if (address >= GB_SIZE_IO) {
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return;
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}
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break;
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}
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gb->memory.io[address] = value;
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}
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uint8_t GBIORead(struct GB* gb, unsigned address) {
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switch (address) {
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case REG_IF:
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break;
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case REG_IE:
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return gb->memory.ie;
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default:
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// TODO: Log
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if (address >= GB_SIZE_IO) {
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return 0;
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}
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break;
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}
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return gb->memory.io[address];
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}
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