44 lines
1.3 KiB
Plaintext
44 lines
1.3 KiB
Plaintext
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//http://wiki.nesdev.com/w/index.php/Cartridge_connector
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//http://benheck.com/Downloads/NES_Famicom_Pinouts.pdf
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//http://kevtris.org/mappers/mmc1/index.html
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//one day, i will redo mappers at the pin level and it will look something like this:
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//public void Strobe(int PRG_A, int PRG_D, int PRG_READ, int CHR_A)
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//{
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// if (PRG_READ == 1)
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// {
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// int PRG_A14 = (PRG_A >> 14) & 1;
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// int tmp_prg_A17_A14;
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// if (prg_mode == 0)
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// if (PRG_A14 == 0)
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// tmp_prg_A17_A14 = prg;
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// else
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// tmp_prg_A17_A14 = ((prg + 1) & 0xF);
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// else if (prg_slot == 0)
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// if (PRG_A14 == 0) tmp_prg_A17_A14 = 0;
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// else tmp_prg_A17_A14 = prg;
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// else if (PRG_A14 == 0)
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// tmp_prg_A17_A14 = prg;
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// else tmp_prg_A17_A14 = 0xF;
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// out_PRG_A = PRG_A;
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// out_PRG_A &= ~0x4000;
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// out_PRG_A |= (tmp_prg_A17_A14 << 14);
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// }
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//}
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//public int Read_CHR_A(int addr)
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//{
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// int CHR_A10 = (addr >> 10) & 1;
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// int CHR_A11 = (addr >> 10) & 1;
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// int out_CIRAM_A10;
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// switch (mirror)
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// {
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// case 0: out_CIRAM_A10 = 0; break;
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// case 1: out_CIRAM_A10 = 1; break;
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// case 2: out_CIRAM_A10 = CHR_A10; break;
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// case 3: out_CIRAM_A10 = CHR_A11; break;
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// }
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// addr
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//} |