34 lines
852 B
C#
34 lines
852 B
C#
|
namespace MyNes.Core
|
||
|
|
{
|
||
|
|
[BoardInfo("Irem 74HC161/32", 78)]
|
||
|
|
internal class Mapper078 : Board
|
||
|
|
{
|
||
|
|
private bool mirroring_mode_single;
|
||
|
|
|
||
|
|
internal override void HardReset()
|
||
|
|
{
|
||
|
|
base.HardReset();
|
||
|
|
Switch16KPRG(PRG_ROM_16KB_Mask, PRGArea.AreaC000);
|
||
|
|
mirroring_mode_single = false;
|
||
|
|
if (base.BoardType == "JALECO-JF-16")
|
||
|
|
{
|
||
|
|
mirroring_mode_single = true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal override void WritePRG(ref ushort address, ref byte data)
|
||
|
|
{
|
||
|
|
Switch08KCHR((data >> 4) & 0xF);
|
||
|
|
Switch16KPRG(data & 7, PRGArea.Area8000);
|
||
|
|
if (mirroring_mode_single)
|
||
|
|
{
|
||
|
|
Switch01KNMTFromMirroring(((data & 8) == 8) ? Mirroring.OneScB : Mirroring.OneScA);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
Switch01KNMTFromMirroring(((data & 8) == 8) ? Mirroring.Vert : Mirroring.Horz);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|