Search found 129 matches

by Logiqx
Sat Apr 24, 2004 10:39 am
Forum: RomCenter 3.x
Topic: CHD Support
Replies: 11
Views: 48225

/*************************************************************************** Compressed Hunks of Data header format. All numbers are stored in Motorola (big-endian) byte ordering. The header is 76 (V1) or 80 (V2) bytes long. V1 header: [ 0] char tag[8]; // 'MComprHD' [ 8] UINT32 length; // length o...
by Logiqx
Fri Apr 23, 2004 1:54 pm
Forum: RomCenter 3.x
Topic: CHD Support
Replies: 11
Views: 48225

There are two levels of checks: 1) Check that the CHD claims to be the correct image (internal SHA). Fast. 2) Check that the CHD passes the 'chdman -verify' algorithm. Slow. I would do the first check after every MAME release but only do the second check after acquiring a CHD (then not done again on...
by Logiqx
Fri Apr 23, 2004 7:09 am
Forum: RomCenter 3.x
Topic: CHD Support
Replies: 11
Views: 48225

There is no reason why true CHD support can't be added but it is something that requires an extension to the RomCenter data file format and significant development to RomCenter too. Eric is a busy chap in real life so I am not going to request or demand these changes because he simply might not have...
by Logiqx
Thu Apr 22, 2004 9:15 pm
Forum: Datafiles
Topic: Older Emus (almost 200 different ones!) datfile incompleted
Replies: 1
Views: 13448

Would you be so kind as to to elaborate a little?
by Logiqx
Thu Apr 22, 2004 9:14 pm
Forum: RomCenter 3.x
Topic: CHD Support
Replies: 11
Views: 48225

So it begs the question when will this be added to RC? and that Logiqx's DATUTIL needs to be updated to accomodate SHA MD5 and CRC for the verification of CHD's. It's not quite as straightforward as that. DatUtil knows the SHA and MD5 of CHDs and outputs the CHDs in CMPro data files (with SHA and M...
by Logiqx
Thu Apr 15, 2004 8:28 am
Forum: Datafiles
Topic: ZN dat file incomplete
Replies: 2
Views: 15884

Have you read the log files? They contain the words 'No supplement required'. ;)

Logiqx
by Logiqx
Tue Apr 13, 2004 1:52 pm
Forum: Datafiles
Topic: chd support in mamediff
Replies: 1
Views: 13239

It's just not supported at the moment I'm afraid. I started a much needed rewrite of all my tools a couple of years ago (almost to the day I'd guess) but don't have time to finish that particular project. Maybe one day I will start on it again (if I win the lottery, etc)!
by Logiqx
Sat Apr 10, 2004 7:55 pm
Forum: Datafiles
Topic: Datfile creation question for version 080
Replies: 2
Views: 17480

There are two extra steps that I perform:

1) Datutil 'fix merging' (-m) is run twice (explains your CRC differences).
2) I remove the duplicate ROMs, using a simple utility that I created.

Logiqx
by Logiqx
Sat Apr 10, 2004 7:53 pm
Forum: Datafiles
Topic: Dats Romcenter for MAME 0.81
Replies: 2
Views: 17331

I've been away on holiday (MAME was released the day after I left). The data files have now been created, tested and uploaded.