61 lines
1.1 KiB
C++
61 lines
1.1 KiB
C++
#ifdef _NES_MAPPER_CPP_
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/////////////////////////////////////////////////////////////////////
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// Mapper 188
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void NES_mapper188::Reset()
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{
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// set CPU bank pointers
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if(num_8k_ROM_banks > 16)
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{
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set_CPU_banks(0,1,14,15);
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}
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else
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{
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set_CPU_banks(0,1,num_8k_ROM_banks-2,num_8k_ROM_banks-1);
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}
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NES_6502::Context context;
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parent_NES->cpu->GetContext(&context);
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context.mem_page[3] = dummy;
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parent_NES->cpu->SetContext(&context);
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dummy[0] = 0x03; // ?
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}
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// Coded by rinao
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void NES_mapper188::MemoryWrite(uint32 addr, uint8 data)
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{
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if (data)
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{
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if (data & 0x10)
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{
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data &= 0x07;
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set_CPU_bank4(data*2);
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set_CPU_bank5(data*2+1);
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}
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else
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{
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set_CPU_bank4(data*2+16);
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set_CPU_bank5(data*2+17);
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}
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}
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else
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{
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if (num_8k_ROM_banks == 0x10)
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{
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set_CPU_bank4(14);
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set_CPU_bank5(15);
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}
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else
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{
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set_CPU_bank4(16);
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set_CPU_bank5(17);
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}
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}
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//data &= num_8k_ROM_banks-1;
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//set_CPU_banks(data*2,(data*2)+1,num_8k_ROM_banks-2,num_8k_ROM_banks-1);
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}
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/////////////////////////////////////////////////////////////////////
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#endif
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