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标题: 请教,naomi与naomi-gd有什么区别?性能上.还有naomi与dc在性能上是否完全一致?感谢. [打印本页]

作者: 才口千 时间: 2008-1-7 12:56 标题: 请教,naomi与naomi-gd有什么区别?性能上.还有naomi与dc在性能上是否完全一致?感谢.

软件载体不同吗?
是否向下兼容?

[ 本帖最后由才口千于 2008-1-7 13:54 编辑 ]

作者: 才口千 时间: 2008-1-7 13:06

还有naomi与dc在性能上是否完全一致? 还是naomi在缓存上要大一些?

作者: xu33 时间: 2008-1-7 13:16

记得当年看杂志说NAOMI的某些数据比DC大一些~

作者: James50 时间: 2008-1-7 13:56

内存和显存比DC都要大一倍，GD只是媒体不同，用RAM DIMM代替ROM，机能没有差别，兼容性就不知道了，没见过实物，我猜是兼容的，另外，NAOMI2也是用的同样的GDROM驱动器

[ 本帖最后由 James50 于 2008-1-7 13:57 编辑 ]

作者: 才口千 时间: 2008-1-7 17:51

naomi的软件载体是芯片（rom）还是单独的卡带？

谢谢啊..

作者: dragonfly 时间: 2008-1-7 19:01

引用:

原帖由 才口千 于 2008-1-7 17:51 发表
naomi的软件载体是芯片（rom）还是单独的卡带？

谢谢啊..

貌似是GD

作者: HyperIris 时间: 2008-1-7 19:36

据我所知貌似类似于 CPS3

游戏需要从GD-ROM读到 RAM里，每24小时还是一周重新读取刷新一次之类的……

游戏运行的时候需要光盘在光驱里，估计是为了防止盗版，毕竟复制GD-ROM还没有先例。

作者: HyperIris 时间: 2008-1-7 19:42

我记错了，原来是72小时

The NAOMI (New Arcade Operation Machine Idea) is also Japanese for beauty above all else.

The GD Rom upgrade is compatible with Naomi and Naomi 2 via the option port on the top of the board. It comes with a Dimm board, very similar to the ROM board on a normal Naomi cartridge, but has RAM instead of ROMS.
RAM board Uses normal PC type DIMM's, so upgrading memory is not a problem, and relativly cheap.

The GD Rom system has a very clever way of getting around the loading delay time. When the game is initially installed, the GD ROM loads its content into the Naomi RAM. Once this is completed, the GD ROM goes into standby unless the RAM gets corupted or the game gets shut off for 72 hours or more. This does two things,

1) Eliminates loading delays completely, (after initial power up.)
2) Minimizes the on/off cycles of the GD ROM drive and greatly increasing the life of this mechanical device.

From Sega R+D - "We learned a lesson watching our coin-op competitors go through hardware hell. Many have been using off-board storage devices for years - hard drives, CD's, etc. with great success in increased content but at a tremendous cost in realiablity. These storage devices simply could not withstand the constant on/off cycling a coin-op application demands. Add to that the dirt and smoke a game has to put up with on location vs. a normal computer application and you can see how this was a problem waiting to happen"

The GD-Rom system uses an electronic "key" that plugs into the DIMM module to act as an activator, to prevent people just copying the GD-Roms, visible on the top right of the pictures. A different key is supplied with every game.

There is a well founded rumor that Sega may use this system for having multigame cabinets like the neogeo multi systems, as the GR-Rom can store a LOT of data....

作者: yangjuniori 时间: 2008-1-7 22:56

NAOMI有BIOS吗有什么区别

作者: James50 时间: 2008-1-8 10:24

引用:

原帖由 才口千 于 2008-1-7 17:51 发表
naomi的软件载体是芯片（rom）还是单独的卡带？

谢谢啊..

如果说NAOMI的话，当然是卡带了，扁扁的，貌似有三排插槽

经典区好像有人贴过图的，或者去SYSTEM16：http://www.system16.com/hardware.php?id=721

作者: James50 时间: 2008-1-8 10:28

引用:

原帖由 yangjuniori 于 2008-1-7 22:56 发表
NAOMI有BIOS吗有什么区别

BIOS当然有了，至于区别不清楚，可以参考当年的ST-V和SS

作者: iiwang 时间: 2008-1-8 10:33

GD-ROM光盘，对应的游戏还有一个小的模块。需要插到NAOMI机台上，防D用的

作者: yangjuniori 时间: 2008-1-8 20:57

我问下 NAOMI和NAOMI2的光区是一模一样的吗可以混用吗

作者: 才口千 时间: 2008-1-8 21:40

確實在1998年剛推出NAOMI基板時,遊戲是以ROM的方式儲存
2000年後才有NAOMI GD-ROM基板,也就是使用相同的母板,但子板變更為使用一台GD-ROM
與NAOMI使用的是同一顆SH-4 CPU,硬體主要差異是在RAM(DC 16MB ,NAOMI 32MB)跟VRAM(DC 8MB,NAOMI 16MB)所以[理論上]現有的DC模擬器應該可以比MAME更容易實現NAOMI模擬之路

别的论坛求来的答案.:D

作者: 欠费停机 时间: 2008-1-8 22:40

引用:

原帖由 yangjuniori 于 2008-1-8 20:57 发表
我问下 NAOMI和NAOMI2的光区是一模一样的吗可以混用吗

一样的

作者: yangjuniori 时间: 2008-1-9 01:58

光区接口板也一样吗

作者: ZHENGZHENGZHENG 时间: 2014-2-1 17:06

posted by wap, platform: UC

部分游戏可以用dc手柄

作者: segachzh 时间: 2014-2-1 18:50

本来就是互换机版记得以前说是NAOMI内存更大，大多游戏移植DC应该都是完美移植，可能有少数会受影响

作者: 杨俊-iori 时间: 2014-2-1 22:23

posted by wap, platform: iPhone

就跟超任磁碟机再加光驱一样

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