作为后期的3D街机基板Naomi，实际上是和DreamCast主机几乎可以平行移植的一款硬件平台，所以通常如果你玩模拟器的话会发现他们是使用同样的核心来运行...
但是，这款硬件平台和旧式的通常街机平台有些不同，虽然比如NEOGEO也是底座+游戏卡带的方式，但是NAOMI的基础底座在配合ROM的时候不仅需要对应地区版本，还有框体设置等等... 说人话：比如你模拟器设置的是美版地区但是你拿到的是日版ROM，就会报错；如果你拿到的游戏是单人版本，你的模拟器设置是双人框体，也会报错！
这些错误都会在开始运行显示NAOMI的LOGO图像之后显示出来...
这些错误代码和解决方式通常是如下：
Error 01
Display: THIS GAME IS NOT ACCEPTABLE BY MAIN BOARD.
Cause: The ROM BOARD (or DIMM BOARD) is not connected correctly to the MAIN BD. The NAOMI 2 ROM board is mounted on the NAOMI main board.
Countermeasures: First, turn power off, connect the ROM BD (or DIMM BOARD) correctly. If the status is not improved yet, the board may be malfunctioning. The NAOMI 2 ROM board software cannot run with the NAOMI main board. If you want to run the NAOMI 2 ROM board software, replace the NAOMI main board with the NAOMI 2 main board.
Error 02
Display: THIS GAME IS NOT ACCEPTABLE BY MAIN BOARD.
Cause: A game of a certain country's version which is not compatible with the Main BD is connected to the Main BD.
Countermeasures: Connect a game of a country's version which is compatible with the Main BD. Country setting change can not be performed in the TEST mode.
Error 03
Display: BOARD MALFUNCTIONING.
Cause: Main board serial number cannot be read out.
Error 04
Display: BOARD MALFUNCTIONING.
Cause: DIMM board serial number cannot be read out.
Error 21
Display: THIS GAME IS NOT ACCEPTABLE BY MAIN BOARD.
Cause: Game data (loaded from the GD-ROM to the DIMM board) are corrupted. The NAOMI 2 GD-ROM disk is used with the NAOMI main board.
Countermeasures: Make sure that the GD-ROM drive is firmly connected to the NAOMI board. Make sure that the GD-ROM disk is not scratched or contaminated. The NAOMI 2 GD-ROM disk software cannot run with the NAOMI main board. If you want to run the NAOMI 2 GD-ROM disk software, replace the NAOMI main board with the NAOMI 2 main board.
Error 22
Display: COMMUNICATION ERROR OCCURRED BETWEEN MAIN BOARD AND OPTION BOARD.
Cause: The NAOMI main board receives no responses from the DIMM board.
Countermeasures: Correctly reconnect the DIMM board and the GD interface board. This may occur when the daughter board on the DIMM is not properly seated. Fix includes cleaning the contacts and re-seating.
Error 23
Display: GD-ROM DRIVE COVER IS OPEN.
Cause: The GD-ROM drive cover is open.
Countermeasures: Close the cover firmly.
Error 24
Display: GD-ROM IS NOT FOUND.
Cause: The NAOMI GD-ROM disk can not be recognized.
Countermeasures: Reinsert the NAOMI GD-ROM disk. Make sure that the GD-ROM disk is not scratched or contaminated.
Error 25
Display: CAN NOT ACCESS GD-ROM DRIVE.
Cause: (1) The GD-ROM drive can not be accessed. (2) The GD-ROM drive cover is open.
Countermeasures: (1) Correctly reconnect the GD cable and power cord to the GD-ROM drive. If the problem is still reproduced, replace the GD-ROM drive. (2) Close the cover firmly.
Error 26
Display: OPTION BOARD MALFUNCTIONING.
Cause: The NAOMI board key chip can not be recognized.
Countermeasures: Make sure that you are using a correct key chip that meets the GD-ROM disk (If not so, change the present key chip with a correct one). Also make sure that the key chip is firmly inserted.
Error 27
Display: DIMM MEMORY IS NOT ENOUGH.
Cause: (1) The capacity of the DIMM memory on the DIMM board is not sufficient. (2) The DIMM memory is not firmly connected.
Countermeasures: (1) Add the memory as required by the software you are using. (2) Firmly reconnect the DIMM memory on the DIMM board.
Error 33
Display: GATEWAY IS NOT FOUND.
Cause: The game doesn't like the security PIC/chip you're using, or PIC is missing, only seen when net-booting(?).
Caution 51
Display: GAME ASSIGNMENTS ARE INCORRECT. SET CORRECTLY IN SYSTEM ASSIGNMENTS OF TEST MODE.
Cause: CABINET TYPE setting is not correct for the game.
Countermeasures: Enter the TEST mode and change the CABINET TYPE setting of SYSTEM ASSIGNMENTS to the setting suitable for the game. For the correct setting, refer to the Instruction Manual attached to the game. Certain games require the replacement of Control Panel.
Caution 52
Display: CHANGE VIDEO OUTPUT OF THIS GAME TO THE SETTING CORRESPONDING TO HORIZONTAL SCANNING FREQUENCY 15kHz.
Cause: 31kHz is employed when the game is corresponding to Horizontal Scanning Frequency of 15kHz only.
Countermeasures: Set the monitor to 15kHz, and No. 1 of NAOMI FILTER BD DIP SW to ON. For the setting method of monitor's Frequency, refer to the Instruction Manual of the cabinet. If the monitor is not corresponding to 15kHz, the game is not playable.
Caution 53
Display: CHANGE VIDEO OUTPUT OF THIS GAME TO THE SETTING CORRESPONDING TO HORIZONTAL SCANNING FREQUENCY 31kHz.
Cause: 15kHz is employed when the game is corresponding to Horizontal Scanning Frequency of 31kHz only.
Countermeasures: Set the monitor to 31kHz, and No. 1 of NAOMI FILTER BD DIP SW to ON. For the setting method of monitor's Frequency, refer to the Instruction Manual of the cabinet. If the monitor is not corresponding to 31kHz, the game is not playable.
Caution 54
Display: GAME ASSIGNMENTS ARE INCORRECT. SET CORRECTLY IN SYSTEM ASSIGNMENTS OF TEST MODE.
Cause: The setting of MONITOR TYPE differs from the correct setting of the game.
Countermeasures: Enter the TEST mode, and change the MONITOR TYPE setting of MONITOR TYPE in SYSTEM ASSIGNMENTS to the correct setting suitable for the game. For the correct setting, refer to the Instruction Manual attached to the game. If necessary, perform Horizontal/Vertical transposition of the monitor, as applicable.
以上摘录至：https://wiki.arcadeotaku.com/w/Sega_NAOMI_Error_Codes 稍后有空来简单翻译一下...
