mirror of https://github.com/mgba-emu/mgba.git
GB I/O: Fix incrementing SGB controller when P14 is low (fixes #2202)
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@ -1,5 +1,6 @@
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0.9.3: (Future)
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Emulation fixes:
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- GB I/O: Fix incrementing SGB controller when P14 is low (fixes mgba.io/i/2202)
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- GB Video: Render SGB border when unmasking with ATTR/PAL_SET (fixes mgba.io/i/2261)
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- GBA SIO: Fix SI value for unattached MULTI mode
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- GBA Video: Fix backdrop color if DISPCNT is first set to 0 (fixes mgba.io/i/2260)
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14
src/gb/io.c
14
src/gb/io.c
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@ -119,19 +119,15 @@ static void _writeSGBBits(struct GB* gb, int bits) {
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if (bits == gb->currentSgbBits) {
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return;
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}
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switch (bits) {
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case 0:
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case 1:
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if (gb->currentSgbBits & 2) {
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gb->sgbIncrement = !gb->sgbIncrement;
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}
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break;
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case 3:
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if (bits & 2) {
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if (gb->sgbIncrement) {
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gb->sgbIncrement = false;
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gb->sgbCurrentController = (gb->sgbCurrentController + 1) & gb->sgbControllers;
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}
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break;
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} else {
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if (gb->currentSgbBits & 2) {
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gb->sgbIncrement = !gb->sgbIncrement;
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}
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}
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gb->currentSgbBits = bits;
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if (gb->sgbBit == 128 && bits == 2) {
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