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[NES] some comments

This commit is contained in:
zeromus 2011-03-02 03:41:24 +00:00
parent fe3414c380
commit e3cf8aae28
1 changed files with 19 additions and 4 deletions
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23
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/SxROM.cs
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@ -13,8 +13,14 @@ namespace BizHawk.Emulation.Consoles.Nintendo.Boards
//check UNIF for more information.. it may specify board and MMC1 rev independently because boards may have any MMC1 rev
//in that case, we need to capture MMC1 rev in the game database (maybe add a new `chip` parameter)
//this board is a little more convoluted than it might otherwise be because i switched to a more chip-centered way of modeling it partway through
//perhaps i will make other boards work that way, and perhaps not
//Final Fantasy
//Mega Man 2
//Blaster Master
//Metroid
//Kid Icarus
//Zelda
//Zelda 2
//Castlevania 2
class MMC1
{
@ -196,19 +202,26 @@ namespace BizHawk.Emulation.Consoles.Nintendo.Boards
{
case "SGROM":
Debug.Assert(RomInfo.CHR_Size == -1, "don't specify in gamedb, it is redundant");
romInfo.CHR_Size = 0; RomInfo.CRAM_Size = 8; romInfo.PRAM_Size = 0;
romInfo.CHR_Size = 0;
RomInfo.CRAM_Size = 8;
romInfo.PRAM_Size = 0;
break;
case "SNROM":
Debug.Assert(RomInfo.CHR_Size == -1, "don't specify in gamedb, it is redundant");
romInfo.CHR_Size = 0; RomInfo.CRAM_Size = 8; RomInfo.PRAM_Size = 8;
romInfo.CHR_Size = 0;
RomInfo.CRAM_Size = 8;
RomInfo.PRAM_Size = 8;
break;
case "SL2ROM":
//these boards have CHR roms and nothing else interesting
RomInfo.CRAM_Size = 0;
RomInfo.PRAM_Size = 0;
break;
default: throw new InvalidOperationException();
}
//boards that don't contain CHR rom will contain CRAM. only one size is supported; set it up if it is there.
Debug.Assert(RomInfo.CRAM_Size == 0 || RomInfo.CRAM_Size == 8);
if (RomInfo.CRAM_Size != 0)
{
@ -217,6 +230,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo.Boards
}
else cram = new byte[0];
//some boards contain PRAM. we only understand one size right now. set it up if it is there.
Debug.Assert(RomInfo.PRAM_Size == 0 || RomInfo.PRAM_Size == 8);
if (RomInfo.PRAM_Size != 0)
{
@ -225,6 +239,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo.Boards
}
else pram = new byte[0];
//some boards contain CHR roms, so set that up here.
if (RomInfo.CHR_Size != 0)
{
Debug.Assert(RomInfo.CHR_Size == 16);