Jump to content
Sign in to follow this  
Tafoid

MAME 0.231 Released!

Recommended Posts

Posted (edited)

MAME 0.231

 

MAME 0.231, our April release, is out now!  The Yamaha FM synthesis rewrite is progressing, with the OPL family (including YM2413, YM3526, YM3812, YMF262 and Y8950) done this month.  A number of regressions reported against the previous release have also been fixed.  Most things should be improved, but if you notice something wrong with a system using one of these chips, be sure to let us know.  Warp-1, a very rare Sun Electronics game from the late ’70s, has been added this month.  This is an early example of an “into the screen” space shooter.

 

For as long as it has been emulated, the “3D” stages in Contra have been too easy.  This comes down to the functionality of the Konami 007452 chip, which Konami calls a VRC&DMP.  Now we know that VRC stands for Virtual ROM Controller, and controls ROM banking.  However, the DMP part has been more of a mystery, assumed to be some kind of protection.  This month, furrtek worked out that it’s apparently some kind of Divide/Multiply Processor, for 16-bit maths operations that would be unacceptably slow on the games’s pair of 6809-family CPUs.  The great news is the game now runs correctly, the bad news is you’ll probably die a lot more.

 

David “Haze” Haywood is back this month with fixes for several arcade games that have never been quite right.  He’s fixed graphical priority issues in SNK’s Beast Busters and Mechanized Attack, improved timing in Seibu Kaihatsu’s Shot Rider, and corrected layer offsets in Mitchell’s Funky Jet.  He also added support for a couple of protected Mega Drive bootleg games from Argentina.  Recently, David has been streaming MAME gaming sessions, often highlighting under-appreciated games.  You can watch the recorded streams on his YouTube channel.  Still on the topic of things that have never been right, sasuke has been busy this month.  He’s improved the Nichibutsu 1412M2 DAC playback rate and timer period calculation, most noticeable on the Mighty Guy soundtrack, and made Taito’s unicycling game Cycle Maabou playable.

 

That’s all we’ve got time for here, but you can read about all the additions, bug fixes, and enhancements in the whatsnew.txt file.  As always, the source and 64-bit Windows binary packages are available from the download page.

 

Read the rest of this entry »

Edited by Tafoid
  • Like 2

Share this post


Link to post
Share on other sites

Stupid "old version" user question - are high scores saved in the newer versions or is it still a separate download/modified compile?

Share this post


Link to post
Share on other sites
19 hours ago, ClassicGMR said:

Stupid "old version" user question - are high scores saved in the newer versions or is it still a separate download/modified compile?

Never mind. I got it working with some research and ini magic. 😊

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...