games/nes: add mapper 7 support
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@ -108,9 +108,21 @@ t:
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n = 0;
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}
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static void
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mmc7(int v, u8int p)
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{
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if(v < 0){
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nrom(-1, 0);
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p = 0;
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}
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prgb[0] = prg + (p & 3) * 0x8000;
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prgb[1] = prgb[0] + 0x4000;
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}
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void (*mapper[256])(int, u8int) = {
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[0] nrom,
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[1] mmc1,
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[7] mmc7,
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};
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static void
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