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MAME work and other stuff

UME 0.146u1

June 11, 2012 Haze Categories: General News. 5 Comments on UME 0.146u1

UME Logo by ALEXGIZH
logo by ALEXGIZH

UME (Universal Machine Emulator) combines the features of MAME and MESS into a single multi-purpose emulator. The project represents a natural course of development for the emulators which already share large amounts of code and is part of an ongoing effort to unify development efforts and provide a single emulation platform for users and developers alike.

For more information on UME in general see the previous update (0.146)

The 0.146u1 package can be downloaded here. This includes 32-bit and 64-bit binaries, the source, and support files (software lists etc.)

This is based off MESS SVN revision 15445 (GIT Mirror) (UME was promoted to being an official target in the SVN with the 0.146 release)

all builds are compiled with
“make all TARGET=ume”

the source is otherwise untouched and includes all changes from MAME and MESS 0.146u1 (MAME 0.146u1 whatsnew can be seen at mamedev.org, the one in the MESS SVN is out of date) MESS changes can be seen in docs/messnew.txt

If you want to use a frontend then QMC2 is recommended, see the news posts below this.

General Release Commentary

There is a valididy check fail (ume -validate) on some ad4* sets, this is inherited from MAME 0.146u1 and was fixed in a post u1 revision. This is however harmless.

0.146u1 is the first official public build to play the Dragon World 2001 and Dragon World Pretty Chance games featured in a previous update here. It also has a fix from hap which allows Taito’s Racing Beat to be somewhat playable, and further extend the mystery of quite what happened to Taito racing games after Continental Circus (1987) and Chase HQ (1988) because their later 2d scaler efforts all look amateurish in comparison. There are also some card / variety games supported thanks to Luca and a strange upside down Space Invaders variant called Space Ranger which was unearthed by Marcello Mancini.

Pong has also made an interesting return, albeit in a non-working state, but it could be a sign of things to come, with actual lower level simulation of components on the non-cpu based games. (note tho, Pong is a simple example and struggles to get 80% speed on my C2D with this level of emulation/simulation)

From the MESS side there has been a lot of work on obscure systems across the board, including a fair amount on the ‘Wang Professional Computer’ systems from Curt Coder, support for various Apple II peripherals from R.Belmont (including the SAM speech card), improvements to the emulation of some pirate mappers in the NES drivers from etabeta and refinements to the software lists from a whole bunch of people.

So overall, solid improvements across the projects, and a fair number of bug fixes / regression fixes from the likes of hap thrown into the mix too (metro.c games should be working again for example)

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Emulation Status

May 31, 2012 Haze Categories: General News. 167 Comments on Emulation Status

Right, I wanted to do a refresher on tasks in MAME / MESS in need of attention so that people were mostly informed / updated on the current state of various drivers and what needs doing to them.

However, I’m going to start off with the reverse approach. Use the comments to ask me about the status of things instead, and I’ll try my best to explain where the current issue lie. Please read any existing comments first because I *will* delete duplicates and off-topic material without warning.

(I make no promises to work on anything mentioned, this is NOT a ‘what should I work on post’ it is simply an experiment to spread knowledge and gauge interest because it isn’t always obvious to people who haven’t worked on the code what the issues are)

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QMC2 for UME

May 24, 2012 Haze Categories: General News. 44 Comments on QMC2 for UME

RenĂ© (QMC2 Author) was kind enough to post 2 test builds of the QMC2 frontend which have full support for the UME build posted the other day. These links were posted in the comments section of the previous article, so I’ve copy+pasted them here.

Installer: http://qmc2.arcadehits.net/Win32/qmc2-win32-0.37-SVN-r3937.exe
Archive: http://qmc2.arcadehits.net/Win32/qmc2-win32-0.37-SVN-r3937.7z (you’ll have to right-click ‘save as’ on this one)

Installer: http://qmc2.arcadehits.net/Win32/qmc2-win32-0.37-SVN-r3927.exe
Archive: http://qmc2.arcadehits.net/Win32/qmc2-win32-0.37-SVN-r3927.7z (you’ll have to right-click ‘save as’ on this one)

QMC2 is the recommended frontend for MAME/MESS/UME, and has an emphasis on ensuring the full functionality of the emulators is easy to use rather than having flashy graphics and the like.

I don’t use a frontend myself, because I still prefer to operate / develop the project from the Commandline, but for those of you who do want a Frontend it’s a good choice, and doesn’t have the stability issues which plague recent MAMEUI/MESSUI builds, although I do just think of “Queens Medical Centre” whenever somebody mentions it because that’s what most people around here are talking about when they say QMC ;-)

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Praise Where Praise is Due

May 24, 2012 Haze Categories: General News. 3 Comments on Praise Where Praise is Due

A lot of people say I can be overly critical of Mamedev and some of the ways they go about things these days, and while personally I feel any criticism is warranted it is true I often have more negative things to say than positive.

However, I’ve always tried to highlight in equal measure times when the development process works well, times when really impressive work has been done and show examples of where the way things are being done really helps people.

Recently ‘hap’ has stepped up to the mark and has been doing a lot of work on smaller less well known / less popular systems which is something I’ve always seen as vital to the progress of MAME because it shows a genuine interest in the emulation process. If you’re following the GIT Mirror, which I’ve pointed out before is an invaluable resources, you’ll also see he’s adopted a development pattern which is one I’ve always strongly encouraged, that being to submit small amounts of progress on a regular basis.

Some argue that regular submissions clog up the changelog, but in reality they have one major advantage, it allows people to follow Mame development, and better understand Mame development by seeing how a driver progresses from a non-working state to something which is actually functional.

While the Initial submission put in by Kale after a couple of days of private work did have a lot already done compared to many skeleton drivers it didn’t work, it just crashed and reset after a few seconds.

Subsequently there were a couple of cleanup submissions as well as Input Fixes (so that it could be coined up and started), ROM Banking Fixes (to stop it crashing), Layer Enable Fixes (so that the playfield vanishes when the title / highscore are displaed), and Preliminary Colour RAM Hookup (as a first attempt to fix the colours so that the text layer wasn’t just monochrome)

This is much better than a single opaque submission because people can learn from it, they get a better understanding of how decisions have been made, the order in which progress has been made, and also the insight that driver development really is broken into several simple steps, not a brick-wall process nobody could hope to achieve.

When I was doing this there was no public mirror, but I like to think the devs I invited to the team at the time were following and learning from it back then too, and likewise that there is still enough public interest for people to actually be following the GIT and thinking ‘I could do that too’

So, as I was saying, I’m glad to see ‘hap’ adopting this approach because I think it only serves to benefit the project in the long run. Furthermore it sets a good example, because the very best devs are the ones who don’t stick to just a single platform which interests them, but instead put in work where it’s needed and the team absolutely needs more like that :-)

The game, if you were wondering is a nice little 8-bit video pinball game called Flipper Jack, rather rare.

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Descended From A Clown?

May 24, 2012 Haze Categories: General News. 25 Comments on Descended From A Clown?

I’m going to write this and post bits in real-time, keep having ideas for something like this, but never finding time to lump them all together

Boulderdash, some say it’s a genre in it’s own right, something completely original which sprung out of nowhere, but is it?

Both Dig Dug, and especially Mr. Do offer almost exactly the same digging tunnels experience, and the same basic boulder falling / crushing mechanics, right down to the boulders only falling once you move away from directly underneath them.

While the gameplay is Dig Dug has different objectives Mr Do. even sees the primary goal as collecting a number of items in the level in order to clear it.

Then you’ve only got to look at something like The Pit, which came out before even either of those, has the digging mechanic, boulders, and even has you picking up diamonds as well as the maze-like structure and ‘which is the safest route’ puzzle mechanic a good 2 years before Boulder Dash surfaced.

So, hardly an original game really is it? It’s just a combination of existing elements, a natural progression onto a larger scrolling playfield, and some further tweaks to the game rules (falling collectibles, rocks which stack up instead of just breaking)

That said, I like Boulder Dash, and when I look at the Arcade conversions of it I can’t help but feel they leave a lot to be desired.

First up you have the Max-a-flex version. This is the original Boulder Dash game by First Star Software, the Atari 800 version to be precise. The problem is it’s *too* much the original game. It hasn’t been adapted for arcade use at all, it merely has a coin based timer bolted on which doesn’t even have a proper display connected to it. It’s not a real arcade game at all, just a lazy port which cripples a perfectly good version of the game into being time-based rather than skill based, because no amount of playing skill can stop a fixed timer from expiring.

Then you have the two Data East versions. The first was released on the obscure Deco Cassette System, it’s painfully slow, has laggy controls, very ordinary graphics, and poor scrolling compared to the Max-a-flex version. Overall it’s just not a great deal of fun to play. It’s a real arcade game at least, but not a very good one, especially not for 1985.

The 2nd Data East version was released 5 years later and is the only proper 16-bit arcade version of Boulderdash. The game looks a lot better, but again it just feels rushed, for lack of a better word. There’s a lot going on with the graphics, a fake 3d look to the blocks, you even have a map in the corner, but then there are odd choices too, like the scrolling clouds in the background, what sense does that make? Also things like the scoring system haven’t had any thought put into them at all, the ‘high score’ table actually just shows the scores of the last couple of people to play the game, it isn’t an actual high score table at all! It’s not the *worst* version I’ve played, but I really don’t like the mazes (too many small, pointless levels and ones which just seem closer to a random spray of objects) and the graphical modernizations do nothing for me at all. It’s fairly fast, and has a good variety of enemies, although things like the fades are badly programmed and look ugly even on real hardware (again pointing at it being rather rushed) It’s just one of those games you’re left thinking could have been a LOT better.

Then we’re left with the Kyle Hodgetts efforts; Diamond Run, Dangerous Dungeons (plus the bootlegs Toffy and Super Toffy) and the unfinished Diggerman. Kyle is generally known for his god-awful conversions of other games, his god-awful redemption games, and a couple of other unspeakable titles, but it looks like he noticed the same thing, a lack of good arcade verisons of Boulderdash.

His first effort is Diamond Run from 1989, a conversion of Ghosts and Goblins, which retains the G&G music giving for a rather odd sounding Boulderdash clone. The game is slow, and ugly but throws in some nice ideas from the very first level, ultimately it just becomes too tedious to play tho.

Dangerous Dungeons was the follow-up, this time a Double Dragon conversion. Released in 1992 it’s actually the most recent of the released Boulderdash games (if you don’t count the Korean hacks of it) The graphics have been touched up from Diamond Run and the gameplay is a lot faster, and while it is still very much an 8-bit game with 8-bit graphics it does play faster this time around, although it’s not perfect. Like Diamond Run it has various elements not present in the original game, you start with some sticks of dynamite you can place to blow things up bomberman style, and there are encased diamonds which must be hit by a rock before they can be collected. The bootleg Toffy is almost identical with a changed title screen, while Super Toffy reworks the graphics again and adds adult cutscenes! Of all the Boulderdash arcade games this is probably the one I enjoy the most, but again it’s a shame it’s so slow, and unpolished looking, especially for a 1992 game but the Double Dragon hardware was rather awful, just look how slow the original game is!

The final KH game is Diggerman, although it’s generally considered unfinished, and unreleased despite widespread availability. As a result of this you’ll reach levels which can’t be completed fairly quickly. Again it builds on Dangerous Dungeons, offering basically a cleaned up, faster version of the same game. The was based on the NeoGeo platform, and uses Face’s Gururin as a base which is no doubt why you main character is taken straight from that. It doesn’t really feel like a 16-bit game, and considering it was scheduled for release around 2000 it looks even more dated for period than many of the other efforts.

So despite the early roots I don’t really think the ‘Boulder Dash’ style of game has ever been well represented in the arcades beyond those initial incarnations of Dig Dug and Mr. Do which are both timeless classics. Understandably having to update an entire full level of boulders and diamonds falling everywhere is a significant amount more strain on an 8-bit system than knowing you’re only ever likely to have one apple / boulder falling at a time but even basic things like the presentation values have been sorely lacking.

For the KH stuff that’s understandable, they’re effectively indie games in the arcade, at a time when arcades were big-budget but the Data East stuff is a real shame and a missed opportunity to create something really special.

The most surprising part is how huge both games were on home platforms; Boulder Dash was ported all over the place, the Spectrum had several official versions, a level editor, and numerous other packs available for example and the game was a staple ‘must own’ game for most 8-bit computers, as well as being available on 16-bit machines such as the Amiga and Atari ST.

The games also had huge communities around them, with many unofficial versions springing up. My personal favourite on the Spectrum was one called ‘Earth Shaker’ which started life as a game sent in by a magazine reader, then ended up on one of the Covertapes. It’s apparently also had an XBOX 360 release in 2010, although I’m yet to try it because I don’t really like buying non-physical games and it’s digital only. Earth Shaker was fun because it threw many additional elements into the mix, and compared to many Speccy clones of Boulderdash ran remarkably well, looked good, and even had decent sound effects / music. Levels not only had your usual dirt/rock combinations but also Bubbles, Fire and many others which gave the game great variety, it was also a real challenge like all proper Boulderdash games!

Rockford can be considered the official sequel to the game, and was released on many platforms, including the Spectrum which was a very playable port, capturing a good sense of speed, it supposedly had an arcade release, but that’s never surfaced and I don’t hold any hope of it being good quality because it was meant to be on the Amiga derived Arcadia system, which is another of those which cripples your game by time, not skill (and worse still, the maximum allowed playtime is set by the operator on those games)

Speaking of the Amiga you ended up with PD libraries with sections dedicated to custom maps for the game ‘Emerald Mine’, and while that wasn’t my favourite Boulderdash game on the Amiga (I always preferred Balder’s Grove) it shows again that there were a huge number of fans of the game.

For some reason the game never made an appearance on popular consoles like the Megadrive, and while it did appear on the NES it seems like another wasted opportunity to produce a high quality 16-bit version of the game.

Recently there have been more versions and more ports of the official game than ever, so at least things are making sense now, although the lack of a genuinely *good* arcade version is something history will always show as missing and that I feel is a real surprise, and a real shame.

There are many one-off, often obscure games which you play and think would have made great arcade games, but few as popular yet never perfectly captured.

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Dragons & Boobies

May 22, 2012 Haze Categories: General News. 16 Comments on Dragons & Boobies

Kittens surely works better, but IGS didn’t make any games called Kitten World, so Dragons will have to suffice.

Anyway, Dragon World 2001, and Dragon World Pretty Chance are the subject here, both of which are now emulated.

Dragon World 2001 is the 4th major installment in the Dragon World series from IGS, and Dragon World Pretty Chance is a modified version of the same game with adult themes and a background revealing mechanic.

Like the rest of the series these are Shanghai style games (not Mahjong! even if they can use Mahjong tiles) with various special powers to help you get through. Not amazingly original, but there you go.

The ARM sub-cpu data has been extracted so that the sub-cpu can be emulated. Compared to DDP2 there isn’t much of it at all, only around 1kb of the internal space is used but it was still essential to get the game running correctly. Both DW2001 and DWPC use identical internal code. These were the last ‘easy’ PGM games to emulate, the remaining ones still don’t have a clear way forward.

With the exception of maybe the original Dragon World these should now be the best emulated in the series because Dragon World 2 still has lingering protection issues on some sets, and Dragon World 3 / 3EX doesn’t really work at all due to the protection use there (not primarily 027ARM based, could probably be figured out by studying the game code)

Here are some screenshots and videos, viewer discretion is advised with the Pretty Chance video, although I’ve tried to make sure nothing too sensitive is included (I suicide before too much is revealed) probably best not viewed at work tho :-)


Dragon World 2001
Dragon World 2001 Dragon World 2001
Dragon World Pretty Chance
Dragon World Pretty Chance Dragon World Pretty Chance

Dragon World 2001
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Dragon World Pretty Chance
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