75 lines
1.4 KiB
C#
75 lines
1.4 KiB
C#
using System;
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using System.IO;
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using System.Diagnostics;
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namespace BizHawk.Emulation.Consoles.Nintendo
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{
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/*
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* Life Span: April 1986 - July 1986
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PCB Class: SUNSOFT-1
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iNES Mapper 184
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PRG-ROM: 32KB
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PRG-RAM: None
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CHR-ROM: 16KB
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CHR-RAM: None
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Battery is not available
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Uses vertical mirroring
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No CIC present
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Other chips used: Sunsoft-1
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*
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* Games:
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* Atlantis no Nazo
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* The Wing of Madoola
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*/
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class Sunsoft1 : NES.NESBoardBase
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{
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int chr_mask;
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int left_piece = 0;
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int right_piece = 3;
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public override bool Configure(NES.EDetectionOrigin origin)
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{
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//configure
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switch (Cart.board_type)
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{
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case "SUNSOFT-1":
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break;
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default:
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return false;
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}
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chr_mask = (Cart.chr_size / 4) - 1;
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SetMirrorType(Cart.pad_h, Cart.pad_v);
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return true;
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}
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public override byte ReadPPU(int addr)
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{
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if (addr < 0x1000)
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{
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return VROM[(addr & 0xFFF) + (left_piece * 0x1000)];
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}
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else if (addr < 0x2000)
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{
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return VROM[(addr & 0xFFF) + (right_piece * 0x1000)];
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}
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return base.ReadPPU(addr);
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}
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public override void WriteWRAM(int addr, byte value)
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{
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left_piece = value & 7 & chr_mask;
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right_piece = (value >> 4) & 7 & chr_mask;
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}
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public override void SyncState(Serializer ser)
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{
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base.SyncState(ser);
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ser.Sync("left_piece", ref left_piece);
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ser.Sync("right_piece", ref right_piece);
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}
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}
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}
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