Page 2 of 2 FirstFirst 12
Results 21 to 30 of 30

Thread: CHD files

  1. #21
    Insert Coin (Level 0)
    Join Date
    Mar 2006
    Posts
    2
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    This is 887788. I'm a new guy over here. Can anyone tell me all of the steps in order to make a CHD file? Please e-mail at luigi_675@yahoo.com

  2. #22
    Alex (Level 15) InsaneDavid's Avatar
    Join Date
    Nov 2004
    Location
    Silicon Valley, USA
    Posts
    7,366
    Thanks Thanks Given 
    24
    Thanks Thanks Received 
    13
    Thanked in
    12 Posts

    Default

    Geez, nothing like bumping a 3 year old thread - TWICE. You don't make CHD files, they're an extension for old builds of MAME (I think somewhere around v0.88 they were reformatted) that contained data for games that used harddisk images such as Primal Rage and Beatmania. DP isn't a roms site, go read the MAME FAQs for all the information you need.

  3. #23
    ServBot (Level 11) roushimsx's Avatar
    Join Date
    Jun 2005
    Location
    Oklahoma
    Posts
    3,030
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by InsaneDavid
    Geez, nothing like bumping a 3 year old thread - TWICE. You don't make CHD files, they're an extension for old builds of MAME (I think somewhere around v0.88 they were reformatted) that contained data for games that used harddisk images such as Primal Rage and Beatmania. DP isn't a roms site, go read the MAME FAQs for all the information you need.
    Just a few corrections here...

    a) You can make CHDs, and it's not that hard
    b) They're for more than just Hard Drives. CHD stands for "Compressed Hunks of Data", and the change that you're thinking of is when Aaron got pissed off that someone wrote a CHD compression program that he ended up rewriting the format to be natively compressed (making the Killer Instinct CHD files a shit ton smaller). CHDs can also be used for CDs, which basically stores the disc images in ISO+FLAC format.

    CHD support was hacked into a build of Zinc, IIRC... I'm not huge on playstation-based arcade hardware (except for the as of yet unemulated G-Net ), so I don't pay toooooooo much attention to it

    ...so...yea.

  4. #24
    Great Puma (Level 12) NE146's Avatar
    Join Date
    Jul 2002
    Location
    Seattle
    Posts
    4,879
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    But again.. playing 99% of the chd files is useless.. with a few exceptions, the majority just run too slow on even current top-of-the-line hardware.

    They will always be available in the future.. and probably even by then there'd be some changes to them. So I'll just kick back and wait until they're PLAYABLE to even look at them again :P

  5. #25
    drowning in medals Ed Oscuro's Avatar
    Join Date
    Nov 2002
    Posts
    16,556
    Thanks Thanks Given 
    3
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Default

    Quote Originally Posted by NE146
    But again.. playing 99% of the chd files is useless.. with a few exceptions, the majority just run too slow on even current top-of-the-line hardware.
    The two I've tried (Violent Circle and Crypt Killer) ran just fine even on my second-newest system...

  6. #26
    Red (Level 21) Jorpho's Avatar
    Join Date
    Jul 2002
    Location
    We're all mad here
    Posts
    13,554
    Thanks Thanks Given 
    2
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Default

    Crypt Killer? I imagine it loses much without the shotguns.
    "There is much pleasure to be gained from useless knowledge." --Bertrand Russel (attributed)

  7. #27
    Great Puma (Level 12) NE146's Avatar
    Join Date
    Jul 2002
    Location
    Seattle
    Posts
    4,879
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    0
    Thanked in
    0 Posts

    Default

    Quote Originally Posted by Ed Oscuro
    Quote Originally Posted by NE146
    But again.. playing 99% of the chd files is useless.. with a few exceptions, the majority just run too slow on even current top-of-the-line hardware.
    The two I've tried (Violent Circle and Crypt Killer) ran just fine even on my second-newest system...
    Try out the rest of them :P

  8. #28
    drowning in medals Ed Oscuro's Avatar
    Join Date
    Nov 2002
    Posts
    16,556
    Thanks Thanks Given 
    3
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Default

    Quote Originally Posted by Jorpho
    Crypt Killer? I imagine it loses much without the shotguns.
    Not as far as I'm concerned, nope.

    Quote Originally Posted by NE146
    Quote Originally Posted by Ed Oscuro
    Quote Originally Posted by NE146
    But again.. playing 99% of the chd files is useless.. with a few exceptions, the majority just run too slow on even current top-of-the-line hardware.
    The two I've tried (Violent Circle and Crypt Killer) ran just fine even on my second-newest system...
    Try out the rest of them :P
    It's a given that 3D games like Cruisin' USA are gonna be slow, but what about the Area 51 games? I imagine all of them (Site 2, Maximum Force or whatever) should run reasonably well. Basically the 2D games should do fine.

  9. #29
    Part of the #vbender crew Custom rank graphic
    Ze_ro's Avatar
    Join Date
    Dec 2003
    Posts
    2,522
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    3
    Thanked in
    3 Posts
    Xbox LIVE
    Abstract Zero
    PSN
    Ze_roV
    Steam
    abstractzero

    Default

    I tried playing through a bunch of CHD games today, and surprisingly, most of them were quite playable. Here's a quick summary:
    • SF Rush, Gauntlet Legends/Dark Legacy, Mace, Tenth Degree, Hyperdrive, Vapor TRX, Biofreaks, etc Midway/Atari 3D games: Unplayably slow due to high amount of 3D graphics.
    • War Gods - About 14 FPS, entirely playable in my opinion
    • Area 51, Maximum Force, etc FMV shooters - Full speed
    • Beatmania games - I couldn't get any of these to start, as they seem to hang at the RAM check... how long am I supposed to wait for it to finish the SRAM check?
    • Beat the Champ, Simpsons Bowling - Fail start-up tests, couldn't play
    • Deadeye - Seems to get stuck in a loop when you try to start a game, couldn't play
    • Killer Instinct 1 & 2 - Completely playable
    • Viscious Circle - Full speed
    • Nagano 98, Hyper Athlete, - About 14 FPS... kinda slow, but playable
    • Wayne Gretzky's 3D Hockey - About 5 FPS, unplayable
    • SFIII, Red Earth, Jojo's Bizarre Adventure - Games are encrypted and don't run, so unplayable
    • Primal Rage 2 - Seems to hang when you try to start a game

    My computer is a 1.8 GHz AMD, which isn't exactly top of the line, but there are plenty of CHD games that are playable. Obviously, it's not CHD games that are inherently slow, it's 3D games that are inherently slow.

    --Zero

  10. #30
    Cherry (Level 1)
    Join Date
    Jul 2002
    Posts
    263
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    1
    Thanked in
    1 Post

    Default

    Quote Originally Posted by Ze_ro
    [*]Beatmania games - I couldn't get any of these to start, as they seem to hang at the RAM check... how long am I supposed to wait for it to finish the SRAM check?
    Several minutes. Eventually the games do start. You might be tempted to disable throttling to speed up the process, but that can throw off the in-game timing, which obviously would be a big problem given the nature of the game

    Quote Originally Posted by Ze_ro
    [*]Beat the Champ, Simpsons Bowling - Fail start-up tests, couldn't play
    From the MAME FAQ - To re-initialize the EEPROM, hold down the test switch (F2) and tap reset (F3) once. Do not let go of F2 until you see a message that says "Initializing EEPROM".

    Quote Originally Posted by Ze_ro
    Obviously, it's not CHD games that are inherently slow, it's 3D games that are inherently slow.
    Actually it isn't the 3D aspect that makes the games slow. It is just the complexity/power of the general hardware that is being emulated that eats up most of the processing, not the graphics emulation. In the past the devs have built versions of their drivers that don't do any graphics, just the rest of the emulation, and the change in speed is minimal.

Similar Threads

  1. Video files to PSP, OK. But, Subtitle files??
    By Jive3D in forum Technical and Restoration Society
    Replies: 0
    Last Post: 09-14-2005, 04:15 PM
  2. SCM files
    By skoldpadda in forum Technical and Restoration Society
    Replies: 4
    Last Post: 08-26-2005, 09:03 PM
  3. Convert colecovision .dsk files into .rom files?
    By Colecovision in forum Classic Gaming
    Replies: 1
    Last Post: 11-21-2002, 05:04 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •