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I have given a good thought about Membler's suggestion of using bank size of 0 to indicate the undersized dump. Then, I figured out that there is one very big flaw of this system. You see, this system requires the rom to be properly dumped. Think what would happen if the rom is over dumped. On the i...

The mapper 159, which is for some Bandai games, has the following known dumps: Dragon Ball Z - Kyoushuu! Saiya Jin (Japan) Magical Taruruuto-kun 2 - Mahou Daibouken (Japan) Magical Taruruuto-kun - Fantastic World!! (Japan) Magical Taruruuto-kun - Fantastic World!! (Japan) (Rev 1) SD Gundam Gaiden - ...

Is there any emulator that support NES 2.0 header?
Otherwise, it could end up like UNIF.

It was just my suggestion that if we're going to make a mapper for undersize NROM, we might as well use this opportunity to handle all known undersize NROM at the same time. Sure, if everyone agrees on it, I'm in. But other thing now to think about is that this will limit the CHR size to 255kb at m...

tepples wrote: I read it again, and my answer again is that a multiplier is required.

Read it again, I was kinda editing my writing, and find out you answered before I finish my editing. Sorry about that

Galaxian is 8192 bytes. You can't fit 8192 into an 8-bit number. "indicate the size" doesn't necessarily means write down the size in bytes. You can do it in bits, bytes, kB's, MB's, banks, pages... Please read the rest of the paragraph, before you make any kind of comment. Of course it's...

I kinda liked the idea of # of PRG banks being zero, because it is both pin-compatible and within reason to use an 8kB ROM on any 28-pin board. I'm pretty sure there never will be a cartridge with 0kB of PRG memory. Alternatively, zero could just mean to repeat it until memory is full, whatever siz...

Hey hey, don't bark at me like that :D As a matter of truth, I am not the one who actually started all this mess. Check this site and you will see what is causing all this trouble. http://forums.no-intro.org/viewtopic.php?f=6&t=1671 You guys think this entire conversation is like me vs. all of y...

You may not like it, but it happens. GIF and JPEG, or PNG and JPEG, or PNG and ICO, etc. Not just me, it's a culture among the "rom" people (i.e. listers, collectors, etc... ). But my point is that a DAT file can be made once and distributed, unlike the ROM. And a properly run DAT project...

As I understand it, the definition of an iNES header doesn't say "16384*nprg bytes unless mapper is X, Y, or Z"; it says "16384*nprg bytes" full stop. The header doesn't say 16384 bytes. It only says there are X numbers of banks. The iNes header never include the bank size infor...

I think it's lame, among other reasons, because it makes the meaning of the PRG-ROM size byte less correct. What if an emulator uses the number of banks to load the data from the file before looking at the mapper number? I have two answers for your comment. 1) If the emulator uses the number of ban...

I think he is suggesting that whenever this new mapper number is used, the number of PRG-ROM pages is completely ignored and 8KB is assumed. I think that's a pretty lame solution and a waste of a mapper number. Why are you calling it lame and waste? The iNES header curruntly supports 256 maximum ma...

How would you set the "PRG ROM size in 16384 byte units" and "CHR ROM size in 8192 byte units" field for Galaxian with your new mapper? That depends how a specific emulator has set its rom buffer, but in simplest form I can think of is: saying the new mapper number is 256 for ex...

As I see it, the pragmatic solution is to say that if there are 16384 bytes of PRG, and the first 8192 match the last 8192, we have an NROM-128, an 8 KiB PRG ROM, and A13 not connected. Adding a new mapper number for NROM-128 in this most obvious 8 KiB configuration would require a rewrite of all i...

[quote="lidnariq"][/quote] Nononono.... you are not getting my point. Whether it's a no-connection or whatever electrical measures it takes, the mirroring is decided by how the catridge is set-up, not by the system, itself. Therefore, you must say that any kind of mirroring does belong to ...