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GBHawk: camera mapper

This commit is contained in:
alyosha-tas 2020-02-23 07:34:55 -05:00
parent 959a06e6bb
commit 38e9dc02b7
1 changed files with 51 additions and 28 deletions
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79
BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/Mappers/Mapper_Camera.cs
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@ -12,6 +12,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
public bool RAM_enable;
public int ROM_mask;
public int RAM_mask;
public bool regs_enable;
public byte[] regs = new byte[0x80];
public override void Reset()
{
@ -24,6 +26,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
RAM_mask = Core.cart_RAM.Length / 0x2000 - 1;
if (Core.cart_RAM.Length == 0x800) { RAM_mask = 0; }
regs_enable = false;
}
public override byte ReadMemory(ushort addr)
@ -38,13 +42,27 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
}
else
{
if (RAM_enable && (((addr - 0xA000) + RAM_bank * 0x2000) < Core.cart_RAM.Length))
if (regs_enable)
{
return Core.cart_RAM[(addr - 0xA000) + RAM_bank * 0x2000];
if ((addr & 0x7F) == 0)
{
return regs[0];
}
else
{
return 0;
}
}
else
else
{
return 0xFF;
if (/*RAM_enable && */(((addr - 0xA000) + RAM_bank * 0x2000) < Core.cart_RAM.Length))
{
return Core.cart_RAM[(addr - 0xA000) + RAM_bank * 0x2000];
}
else
{
return 0xFF;
}
}
}
}
@ -62,13 +80,16 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
}
else
{
if (RAM_enable && (((addr - 0xA000) + RAM_bank * 0x2000) < Core.cart_RAM.Length))
if (!regs_enable)
{
SetCDLRAM(flags, (addr - 0xA000) + RAM_bank * 0x2000);
}
else
{
return;
if (/*RAM_enable && */(((addr - 0xA000) + RAM_bank * 0x2000) < Core.cart_RAM.Length))
{
SetCDLRAM(flags, (addr - 0xA000) + RAM_bank * 0x2000);
}
else
{
return;
}
}
}
}
@ -86,36 +107,36 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
{
RAM_enable = (value & 0xF) == 0xA;
}
else if (addr < 0x3000)
else if (addr < 0x4000)
{
ROM_bank = value;
ROM_bank &= ROM_mask;
}
else if (addr < 0x4000)
{
}
else if (addr < 0x5000)
{
//registers
}
else if (addr < 0x6000)
{
ROM_bank &= 0x1F;
ROM_bank |= ((value & 3) << 5);
ROM_bank &= ROM_mask;
}
else
{
RAM_bank = 0;
if ((value & 0x10) == 0x10)
{
regs_enable = true;
}
else
{
RAM_bank = value & RAM_mask;
}
}
}
else
{
if (RAM_enable && (((addr - 0xA000) + RAM_bank * 0x2000) < Core.cart_RAM.Length))
if (regs_enable)
{
Core.cart_RAM[(addr - 0xA000) + RAM_bank * 0x2000] = value;
regs[(addr & 0x7F)] = (byte)(value & 0x7);
}
else
{
if (RAM_enable && (((addr - 0xA000) + RAM_bank * 0x2000) < Core.cart_RAM.Length))
{
Core.cart_RAM[(addr - 0xA000) + RAM_bank * 0x2000] = value;
}
}
}
}
@ -131,6 +152,8 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
ser.Sync(nameof(RAM_bank), ref RAM_bank);
ser.Sync(nameof(RAM_mask), ref RAM_mask);
ser.Sync(nameof(RAM_enable), ref RAM_enable);
ser.Sync(nameof(regs_enable), ref regs_enable);
ser.Sync(nameof(regs), ref regs, false);
}
}
}