UPDATED 2018/6/12

A few weeks ago, someone requested some help to dump an AVE release of F-15 Citywar on nesdev forums. NewRisingSun replied and pointed out that the original Idea-Tek release was likely undumped. This was especially surprising and I offered to dump my cartridge. We eventually found out that all Idea-Tek releases were either undumped, wrongly emulated or hacked. NewRisingSun and I proceeded to dump and check all the Idea-Tek cartridges I had in my hands. That process brings us to today, with the dumps of the original releases of a good chunk of the Idea-Tek catalog.

小瑪琍 (Xiǎo Mǎlí) - Nei-Hu and TXC MGC-005 releases

These redumps include the full 32 KiB of CHR-ROM, which is not an overdump, but part of a copy-protection scheme. The previous dumps (headerless CRC32 9C3A26CB for the original Nei-Hu, 3FDC2FBE for the Idea-Tek release without copyrights) strip the CHR-ROM to 8 KiB and so hide a part of the copy-protection scheme.
The original 内湖 (Nei-Hu) (headerless CRC32 9C3A26CB) and Idea-Tek releases (headerless CRC32 0x974B0552) are copy-protected. The copy protection involves checking that a mapper register returns the correct value, with the games blackening the screen if it does not. The copy-protection must be emulated as part of Mapper 173. The C&E and TXC (MGC-005, cartridge label "Bingo") re-releases have no copy-protection. The Nei-Hu, Idea-Tek and TXC releases furthermore always set the color-emphasis bits, permanently darkening the screen; the C&E version does not do that.

All versions of the game have 8 KiB of PRG-ROM and 8 KiB of CHR-ROM. Because the .NES format only supports 16 KiB PRG-ROM banks, it's unavoidable that the PRG part of the ROM must be repeated once, or "overdumped". Furthermore, because the Nei-Hu and Idea-Tek releases use UVEPROMS with a nonstandard pinout, the previously-posted versions of their ROMs had overdumped 32 KiB of CHR which had been thought of being a part of the copy-protection.

F-15 City War:

Here is the so-far undumped original Idea-Tek release. Only Gluk Video's release (headerless CRC32 2FBEA66D) and AVE's two releases (headerless CRC32 88A6B192 for rev0, F3841DCD for rev1) had been dumped so far.

撲克精靈 (Poker Jīnglíng):

The previous dumps (headerless CRC32 8F154A0D for the correct dump with 16 KiB PRG, B39F7D56/B9FD16E1 for the overdumps with 32 KiB PRG) are not mapper hacks as previously thought, even as they ran under mapper 3. It turns out that the unmodified ROM can run under Mapper 3, but only if the emulator does not emulate bus conflicts (which FCEUX does), and would not run on a stock Nintendo CNROM board for the same reason. The redumped ROM has been set to Mapper 173 to reflect what the hardware on the cart actually is like.

Puzzle:

The existing dump in NoIntro named "Puzzle (USA) (Beta) (Unl).zip" (headerless CRC32 2FA8CBB4) is not actually a Beta of the American release; it's rather a Mapper 3 hack of our new unhacked dump of the original Idea-Tek release of the game. The Idea-Tek release differs from the American Video Entertainment release (headerless CRC32 EA19080A) in having different music in-game, no music at the title screen, and some different puzzle images. It mostly matches the Gluk Video release (headerless CRC32 7984AE6D), except that the Gluk Video release prints "Idea Tek Corp." on the title screen which the actual Idea-Tek release does not, and the Idea-Tek release does not allow accessing levels above 2-3 using the level selector, while the Gluk video release goes up to 2-5. The 2-4 and 2-5 images are still there in the Idea-Tek release; but presumably you have to complete level 2-3 first to access them.

麻将方块 (Mahjong Block):

The existing dump (headerless CRC32 0ACFC3CD) seems to be a TXC re-release of the game and does not run under the more accurate emulation of Mapper 173; instead, it must be set to Mapper 136 (uploaded here for convenience). This redump is from the original Super Mega release of the game and runs under the Super Mega mapper 172. Note that if you press START while the main game screen is fading in, the pause screen becomes glitched; this bug occurs with the original cartridge on real hardware as well.

->Download the eight ROMs<-

The latest version of NintendulatorNRS and the associated source can be downloaded on its dedicated page in the blog link list.

All credits to NewRisingSun.