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A7800Hawk: Start support for ROM Headers

This commit is contained in:
alyosha-tas 2017-07-20 15:01:47 -04:00 committed by GitHub
parent 0b7c10594c
commit 585f9f412b
1 changed files with 25 additions and 2 deletions
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27
BizHawk.Emulation.Cores/Consoles/Atari/A7800Hawk/A7800Hawk.cs
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@ -3,6 +3,7 @@
using BizHawk.Common.BufferExtensions;
using BizHawk.Emulation.Common;
using BizHawk.Emulation.Cores.Components.M6502;
using BizHawk.Common.NumberExtensions;
namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
{
@ -75,10 +76,15 @@ namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
byte[] palBios = comm.CoreFileProvider.GetFirmware("A78", "Bios_PAL", false, "The game will not run if the correct region BIOS is not available.");
byte[] ntscBios = comm.CoreFileProvider.GetFirmware("A78", "Bios_NTSC", false, "The game will not run if the correct region BIOS is not available.");
byte[] header = new byte[128];
bool is_header = false;
if (rom.Length % 1024 == 128)
{
Console.WriteLine("Trimming 128 byte .a78 header...");
byte[] newrom = new byte[rom.Length - 128];
is_header = true;
Buffer.BlockCopy(rom, 0, header, 0, 128);
Buffer.BlockCopy(rom, 128, newrom, 0, newrom.Length);
rom = newrom;
}
@ -108,9 +114,26 @@ namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
else
throw new Exception("No Board selected for this game");
}
else if (is_header)
{
byte cart_1 = header[0x35];
byte cart_2 = header[0x36];
_isPAL = (header[0x39] > 0) ? true : false;
if (cart_2.Bit(1))
{
s_mapper = "1";
}
else
{
s_mapper = "0";
}
}
else
{
throw new Exception("ROM not in gamedb");
throw new Exception("ROM not in gamedb and has no header");
}
Reset_Mapper(s_mapper);
@ -189,7 +212,7 @@ namespace BizHawk.Emulation.Cores.Atari.A7800Hawk
{
mapper = new MapperDefault();
}
if (m=="A78SG")
if (m=="1")
{
mapper = new MapperSG();
}