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BizHawk
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NES: BANDAI-FCG-1: cleanup and fix some stuff (broke savestates). FIXES: Dragon Ball - Dai Maou Jukkatsu, Rokudenashi Blues, Dragon Ball Z - Kyoushuu! Saiya Jin, SD Gundam Gaiden, Magical Taruruuto Kun 1, 2

This commit is contained in:
goyuken 2012-10-31 16:29:26 +00:00
parent 56e4a84f14
commit 8af6cac4ec
1 changed files with 18 additions and 33 deletions
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51
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/BANDAI-FCG-1.cs
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@ -8,14 +8,14 @@ namespace BizHawk.Emulation.Consoles.Nintendo
/*
Example Games:
--------------------------
Dragon Ball - Dai Maou Jukkatsu (016) Garble graphics and unplayable (Works in FCEUX)
Dragon Ball - Dai Maou Jukkatsu (016) Works
Dragon Ball Z Gaiden (016) Works
Dragon Ball Z 2 (016) Works
Rokudenashi Blues (016) Gray (Gray in FCEUX as well, Nestopia plays it)
Rokudenashi Blues (016) Works
Akuma-kun - Makai no Wana (016) Works
Dragon Ball Z - Kyoushuu! Saiya Jin (159) Gray
SD Gundam Gaiden (159) Gray
Magical Taruruuto Kun 1, 2 (159) Gray
Dragon Ball Z - Kyoushuu! Saiya Jin (159) Works
SD Gundam Gaiden (159) Works
Magical Taruruuto Kun 1, 2 (159) Works
PRG_ROM: 128KB
PRG_RAM: None
@ -38,9 +38,8 @@ namespace BizHawk.Emulation.Consoles.Nintendo
//state
int prg_reg_16k, eprom;
ByteBuffer regs = new ByteBuffer(8);
bool irq_enabled, irq_asserted;
bool irq_enabled;
ushort irq_counter;
int clock_counter;
public override void SyncState(Serializer ser)
{
@ -50,11 +49,8 @@ namespace BizHawk.Emulation.Consoles.Nintendo
ser.Sync("eprom", ref eprom);
ser.Sync("irq_counter", ref irq_counter);
ser.Sync("irq_enabled", ref irq_enabled);
ser.Sync("irq_asserted", ref irq_asserted);
ser.Sync("clock_counter", ref clock_counter);
SyncPRG();
SyncIrq();
}
public override void Dispose()
@ -134,8 +130,8 @@ namespace BizHawk.Emulation.Consoles.Nintendo
break;
case 0xA:
irq_enabled = value.Bit(0);
if (!irq_enabled) irq_asserted = false;
SyncIrq();
// all write acknolwedge
IRQSignal = false;
break;
case 0xB:
irq_counter &= 0xFF00;
@ -164,31 +160,25 @@ namespace BizHawk.Emulation.Consoles.Nintendo
WriteReg(addr, value);
}
void SyncIrq()
public override byte ReadWRAM(int addr)
{
IRQSignal = irq_asserted;
// reading any addr in 6000:7fff returns a single bit from the eeprom
// in bit 4. zeroing that bit seems sufficient for some games to boot
return (byte)(NES.DB & 0xef);
}
public override void ClockCPU()
{
irq_counter--;
if (irq_counter == 0x0000)
if (irq_enabled)
{
irq_asserted = true;
SyncIrq();
irq_counter--;
if (irq_counter == 0x0000)
{
IRQSignal = true;
}
}
}
/*
public override void ClockPPU()
{
clock_counter++;
if (clock_counter == 3)
{
ClockCPU();
clock_counter = 0;
}
}*/
public override byte ReadPRG(int addr)
{
@ -215,10 +205,5 @@ namespace BizHawk.Emulation.Consoles.Nintendo
else return base.ReadPPU(addr);
}
public override void WritePPU(int addr, byte value)
{
if (addr < 0x2000) { }
base.WritePPU(addr, value);
}
}
}