MAMEWorld Forums - EmuChat - Area 51 Site 4 .CHD

All the recent chd commotion reminded me that MAME still only supports one Area 51 Site 4 chd, so I thought I would again state why it should support two.

I own a dedicated cab and have sold HD replacements that use an SD card and IDE adapter. So I have done some research and have purchased enough board sets and HD's that I have some idea what I'm talking about.

Hell, I even sent Guru the MB so he could dump the V1.0h bios as well as a Jammit chip for Dr. Decapitator to decap.

Anyhoo, The currently supported image is Rev. 2.01 as is still sold by happ. The only difference between the current MAME chd and a fresh Happ HD is that the MAME chd has had it's serial # cleared, but it STILL has statistical data saved. IE. credits inserted, games played, play times, etc...

I know it's that version by the size of the CHD. I have compressed several STOCK HD's including my own and they all are the same size. The only HD that I have compressed that was the same as the currently supported chd was a happ replacement HD.

So in conclusion, There are two different versions of the Area 51 Site 4 HD one that was shipped in dedicated cabs dated Sep. 11 1998 and another Rev. 2.01 dated Sep. 7 1998 for whatever reason I cannot say.

I do have clean copies of both in chd format, stripped of ALL statistical info. but they still retain their serial #'s.

BTW: I did use chdman to copy the currently supported chd to a card and put it in my cab just to clear all the stats. and make a clean copy as it should be.

Also, Just to be clear the size of the chd is not determined by the original HD as I'm talking about their size after using chdman to put them onto a SD card and then using chdman to make a chd from the SD card. They are different sizes!

I have offered all this info before but maybe this time someone will want it???

[ATTACHED IMAGE]

Attachment

There is no law in the arena