ShuriZma
/
BizHawk
mirror of https://github.com/TASEmulators/BizHawk.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

GBHawk: fix linking (again)

This commit is contained in:
alyosha-tas 2022-01-16 09:09:09 -05:00
parent 86ce476ad1
commit e1315aa511
1 changed files with 32 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

64
src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBHawk/SerialPort.cs
View File

@ -16,7 +16,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
public byte coming_in;
public bool can_pulse;
public bool IRQ_block;
public bool tranfser_complete_flag;
public byte ReadReg(int addr)
{
@ -40,39 +39,44 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
break;
case 0xFF02:
if ((value & 0x1) == 1)
if ((value & 0x80) == 0x80)
{
if (((value & 2) > 0) && Core.GBC_compat)
if ((value & 0x01) == 0x01)
{
clk_rate = 16;
serial_clock = 16 - (int)(Core.timer.divider_reg % 8) - 1;
// if the clock rate is changing and it's on a GBA/C, the parity of (cpu.totalexecutedcycles & 512) effects the first bit
// Not sure exactly how yet
if (((value & 2) > 0) && Core.GBC_compat)
{
clk_rate = 16;
serial_clock = 16 - (int)(Core.timer.divider_reg % 8) - 1;
// if the clock rate is changing and it's on a GBA/C, the parity of (cpu.totalexecutedcycles & 512) effects the first bit
// Not sure exactly how yet
}
else
{
clk_rate = 512;
serial_clock = 512 - (int)(Core.timer.divider_reg % 256) - 1;
// there seems to be some clock inverting happening on some transfers
// not sure of the exact nature of it, here is one method that gives correct result on one test rom but not others
/*
if (Core._syncSettings.GBACGB && Core.is_GBC)
{
if ((Core.TotalExecutedCycles % 256) > 127)
{
serial_clock = (8 - (int)(Core.cpu.TotalExecutedCycles % 8)) + 1;
}
}
*/
}
can_pulse = true;
serial_bits = 8;
}
else
{
clk_rate = 512;
serial_clock = 512 - (int)(Core.timer.divider_reg % 256) - 1;
// there seems to be some clock inverting happening on some transfers
// not sure of the exact nature of it, here is one method that gives correct result on one test rom but not others
/*
if (Core._syncSettings.GBACGB && Core.is_GBC)
{
if ((Core.TotalExecutedCycles % 256) > 127)
{
serial_clock = (8 - (int)(Core.cpu.TotalExecutedCycles % 8)) + 1;
}
}
*/
}
if (tranfser_complete_flag)
{
can_pulse = true;
clk_rate = -1;
can_pulse = false;
serial_bits = 8;
tranfser_complete_flag = false;
}
}
else
@ -81,7 +85,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
clk_rate = -1;
serial_clock = clk_rate;
can_pulse = false;
tranfser_complete_flag = true;
}
if (Core.GBC_compat)
@ -117,7 +120,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
if (serial_bits == 0)
{
serial_control &= 0x7F;
tranfser_complete_flag = true;
if (Core.REG_FFFF.Bit(3)) { Core.cpu.FlagI = true; }
Core.REG_FF0F |= 0x08;
@ -145,7 +147,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
coming_in = 1;
can_pulse = false;
IRQ_block = false;
tranfser_complete_flag = true;
}
public void SyncState(Serializer ser)
@ -159,7 +160,6 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBHawk
ser.Sync(nameof(coming_in), ref coming_in);
ser.Sync(nameof(can_pulse), ref can_pulse);
ser.Sync(nameof(IRQ_block), ref IRQ_block);
ser.Sync(nameof(tranfser_complete_flag), ref tranfser_complete_flag);
}
}
}