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Note: as for r9070, PC Engine CD emulation works, with the following noted quirks: - all (?) games boots, if you can't surpass the CD System screen then most likely your image is bad / corrupt; - it doesn't have any ADPCM emulation; - it doesn't seem to have any CD-DA / "red book" playback; - some of the games tested have shuffled graphics, probably something to do with DMAing; - other games instead doesn't show/have garbage with the player sprite, dunno at current time why this peculiar thing happens; - most if not all the games are very prone to hangs, most likely due of missing ADPCM status flags; - Akumajou Dracula X is very fussy about starting a play on the title screen; - All (?) Falcom games minus Ys 3 hangs with black screen at start-up  And now, some random screens: 4 in 1 Super CD   
Last edited by Kale; 09/08/10 08:04 PM. Reason: Added header
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Ane-San    
Bakushou Yoshimoto no Shinkigeki   Advanced Variable Geo  
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Lords Of Thunder    Cosmic Fantasy 2   
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Princess Maker I
  Super Real Mahjong Part 2 & 3     Tokimeki Memorial    
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Altered Beast (J)    Last Alert   
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Last edited by Kale; 09/08/10 09:00 PM. Reason: More snaps
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- it doesn't seem to have any CD-DA / "red book" playback; ? CD-DA works fine for me in e.g. the Tokimeki Memorial intro, maybe your rip is bad?
chdman - MAME Compressed Hunks of Data (CHD) manager 0.139.1 (Sep 8 2010)
Input file: tokimeki.chd
Header Size: 108 bytes
File Version: 4
Flags: NO_PARENT, READ_ONLY
Compression: zlib+
Hunk Size: 9792 bytes
Total Hunks: 66336
Logical size: 649,562,112 bytes
SHA1: 16d3601ec8ddc44cb83659d5185a66de2b8f229d
Raw SHA1: a605eb01e3ee312e7bcbdf45918e34e911eea476
Metadata: Tag='CHTR' Length=44
TRACK:1 TYPE:AUDIO SUBTYPE:NONE FRAMES:4603.
Metadata: Tag='CHTR' Length=49
TRACK:2 TYPE:MODE1_RAW SUBTYPE:NONE FRAMES:32780.
Metadata: Tag='CHTR' Length=43
TRACK:3 TYPE:AUDIO SUBTYPE:NONE FRAMES:752.
Metadata: Tag='CHTR' Length=50
TRACK:4 TYPE:MODE1_RAW SUBTYPE:NONE FRAMES:169199.
Metadata: Tag='CHTR' Length=44
TRACK:5 TYPE:AUDIO SUBTYPE:NONE FRAMES:5767.
Metadata: Tag='CHTR' Length=45
TRACK:6 TYPE:AUDIO SUBTYPE:NONE FRAMES:14413.
Metadata: Tag='CHTR' Length=44
TRACK:7 TYPE:AUDIO SUBTYPE:NONE FRAMES:5191.
Metadata: Tag='CHTR' Length=49
TRACK:8 TYPE:MODE1_RAW SUBTYPE:NONE FRAMES:32631.
You can rule out driver issues by passing the CHD to the cdtv driver, which plays audio CDs.
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does Rainbow Islands CD-ROM works? i haven't checked yet, because i don't have CHD.
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Yes, CD-DA should work. Easy to test by simply creating a CHD from some cd-single/small cd and try to play it in the built-in cd player.
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Sweet seeing the pc engine getting some love, huge thanks Kale! Did some quick tests: Dragon Half   Works fine up until you enter a battle in which it seems to lock up. Gain Ground SX   Seems to work flawlessly. Gotzendenier  First it gives a grabled screen while loading then black, but if you press the button a couple of times you will reach the ingame intro (shown in picture) but then as soon as the game begins it goes black again. Last Armageddon   Loads fine but hangs in intro sequence when you start game. Neo Nectaris   Seems fully functional but with garbled graphics in battle sequences.
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Space Fantasy Zone   Seems to work flawlessly. Star Mobile   Seems to work flawlessly. Snatcher  Shows Konami intro and then goes black, noooooooooo! Star Parodia   Seems to work flawlessly.
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Yes, CD-DA should work. Easy to test by simply creating a CHD from some cd-single/small cd and try to play it in the built-in cd player.
Ok, it's because we were using iso/cue/wav disk images, and those doesn't convert properly in chdman. Good to know, so just the ADPCM is missing, and I'm working on that right now.
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Yeah, the latest CHDMAN outputs a CHD with working CD-DA from the LoT rip you sent me, and my own rip (from a real original CD) of Rondo of Blood plays CDDA as well.
I'll fix conversion of bin/cue rips with .WAV audio tracks next.
Last edited by R. Belmont; 09/09/10 01:11 PM.
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Last edited by Kale; 09/09/10 01:31 PM.
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As usual, send me a rip that does that and I'll see what I can do 
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Last edited by Kale; 09/09/10 02:40 PM.
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Splash Lake   Steam Heart's <- gives access violation after the character screen, first game tested that does that  Prince of Persia (U) <- doesn't work at all, executes bad code Battlefield '94 in Tokyo Dome <- has "copy protection issues"? 
Last edited by Kale; 09/09/10 02:55 PM.
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Space Fantasy Zone Seems to work flawlessly. I get static in this one If I convert it it chd
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r9074 /src/mess/ (includes/pce.h machine/pce.c): [PCE]: bare minimum implementation of Arcade Card handlingYes, realized that the aforementioned Battlefield is an Arcade card game, adding a simple ID it boots up to the title screen then dies, I'll look up into adding extra features now. 
Last edited by Kale; 09/09/10 04:10 PM.
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I get static in this one If I convert it it chd I used the guide from Guru's site and read it off cd to a toc/bin image using burn-at-once (if I recall the name correctly, there is a link on guru's site) and then just converted it to chd with chdman -createcd foo.toc foo.chd here's a link to the tutorial, you need to scroll down a bit for the cd stuff: http://www.mameworld.info/guru/tutorials/dumping_cds_&_hdds/index.html
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Last edited by Kale; 09/10/10 04:35 PM.
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Awesome!
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r9086 /src/mess/machine/pce.c: [PCE]: Added CD interface port ADPCM RAM 0x0a r/w routing, fixes Akumajou Dracula X going nuts after the intro Magnificent, let me check.
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r9086 /src/mess/machine/pce.c: [PCE]: Added CD interface port ADPCM RAM 0x0a r/w routing, fixes Akumajou Dracula X going nuts after the intro
This also fixes wrong / missing gfxs in many games, I'll let Tafoid do a bunch of screenshots for these:
Monster Lair Before and after the fix.  
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Kale, can you take a look on Shadow of the Beast (J), please ?
The graphics are missing, the sound is ok.
Tried the CD image on Ootake/MagicEngine, all ok.
Last edited by Anna Wu; 09/11/10 08:51 AM.
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Nice fixes! Dragon Half no longer freezes in battles  Neo Nectaris background graphics are fixed  Also some new tests, Populous the Promised Lands loads fine but freezes during the starwars-scroller intro   Tengai Makyou Ziria seems to work fine, so does Builder Land  
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Anybody got Hi-Leg Fantasy to work?
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Anybody got Hi-Leg Fantasy to work? It seems, the game (GECD JPN) need the Games Express CD Card to run. Should work on MagicEngine. Not working on MESS/Ootake.
Last edited by Anna Wu; 09/11/10 10:44 AM.
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Yep, it is working with MagicEngine.  
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Dungeon Explorer II (U) Sound in parts missing.   
Last edited by Anna Wu; 09/11/10 11:19 AM.
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r9092 /src/mess/ (drivers/pce.c machine/pce.c): [PCE]: Added bare minimum ADPCM playback support
Is it just me or it sounds ... horribly clipped? Any thoughts?
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The game express is not supported (yet). I didn't have any hardware details at the time and no images to test.
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just tested Rainbow Islands:
* CD-DA plays fine
* there's some garbage on island map screen
* when you're jumping, the sprite looks okay
* when you're walking, the sprite is flickering
* when you stop, the sprite disappears
* no sound effects (due to ADPCM missing, i suppose)
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The game express is not supported (yet). I didn't have any hardware details at the time and no images to test. The second point should be not a problem. To find any GECD specs is much harder.
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The game express is not supported (yet). I didn't have any hardware details at the time and no images to test. The second point should be not a problem. To find any GECD specs is much harder. It's a bootleg card, I doubt it's hard to figure out.
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The game express is not supported (yet). I didn't have any hardware details at the time and no images to test. The second point should be not a problem. To find any GECD specs is much harder. It's a bootleg card, I doubt it's hard to figure out. I hope you can convince me otherwise.
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I'll check out Game Express games at some point, but first I would like to fix remaining regular cd games issues ... or you really want to play cheap bootlegs instead of Snatcher, Falcom games, Steam Heart's, Prince of Persia, Ryuuko no Ken and dunno what else right now?
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r9092 /src/mess/ (drivers/pce.c machine/pce.c): [PCE]: Added bare minimum ADPCM playback support
Is it just me or it sounds ... horribly clipped? Any thoughts? Pitch is right, tempo is right, everything goes even lip-synch ... but the clipping is really un-hearable I just would like to know ... is this supposed to be like this on real HW or there's something wrong in our MSM emulation?
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I assume it sounds better in Mednafen? Check his source
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I've just tried in Ootake, and it sounds a lot cleaner
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I'll check out Game Express games at some point, but first I would like to fix remaining regular cd games issues ... or you really want to play cheap bootlegs instead of Snatcher, Falcom games, Steam Heart's, Prince of Persia, Ryuuko no Ken and dunno what else right now? Of course, I like more the crappy GE games. Just a joke.  Tried only to help Kaylee, that´s all.
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I'll check out Game Express games at some point, but first I would like to fix remaining regular cd games issues ... or you really want to play cheap bootlegs instead of Snatcher, Falcom games, Steam Heart's, Prince of Persia, Ryuuko no Ken and dunno what else right now? Of course, I like more the crappy GE games. Just a joke. Tried only to help Kaylee, that´s all. Well you know the primary reason I wrote HazeMD was so that I could play with the MD pirate games, without resorting to using patched roms like Kega did at the time? ;-)
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r9115 /src/mess/machine/pce.c: [PCE]: Arcade Card address bits 4-5 is a selector for different index registers, hooked that. Greatly improves compatibility / gfx issues in A-Card gamesRyuuko no Ken   Garou Densetsu 2   Formation Soccer '95 - Della Serie A  
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Zero WingThis has a complete voice-acted intro which is nothing like the infamous Genesis one. The "arrange" versions of the songs during the stages are nice too. Incidentally, .WAV tracks in bin/cue images work now. This is proof.   
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Ginga Fukei Densetsu - Sapphire (NTSC-J) [HCD5080]  I've converted my .cue .iso to .chd and the game displays garbled sprites. Can anyone else confirm that this is the case for their .chd conversion? MESS SVN r9159 (32-Bit)
Last edited by Spa8nky; 09/18/10 04:25 PM.
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Yes, known issue. It's something to do with DMAs that I haven't yet figured out
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Cool, thanks for confirming Kale. Great work so far!
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Anybody has a copy of Parasol Stars to test?
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Isn't Parasol Stars a cartridge game? This thread is for showing off CDs
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Yeah Parasol is a cart game, and has worked pretty well in MESS for a long time now, including the raster / scaling effects.
Easy mistake to make I guess, because most of these CD games don't look like your typical CD games of this era. They're real games, not FMV junk (NEC saved that for the PC-FX)
I think the only reason most of them are on CD is because the CD card gave you a significant amount of extra RAM, and you could have CD audio.
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And probably cds were cheaper to produce
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CDs were definitely cheaper, but the main thing is the RAM + ADPCM + CDDA actually put the thing in the ballpark of the SNES and Megadrive as far as what you could get out of it.
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Isn't Parasol Stars a cartridge game? This thread is for showing off CDs huh. Well that shows how much I know about the PC Engine. Next time I'll do my homework before asking.
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Isn't Parasol Stars a cartridge game? This thread is for showing off CDs huh. Well that shows how much I know about the PC Engine. Next time I'll do my homework before asking. you probably confused it with Rainbow Islands. it was released on PCE CD-ROM.  and yes, Parasol Stars is cartridge game.
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r9197 /src/mess/machine/pce.c: [PCE]: Fixed ADPCM DMA stop behaviour, fixes several Arcade Card games gfxs / bootingGinga Fukei Densetsu Sapphire 
Puyo Puyo Tsuu CD   Garou Densetsu Special   Fire Pro Jyoshi - Dome Chojyo Taisen 
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r9214 /src/mess/machine/pce.c: [PCE]: Fixed missing CD IRQ acknowledge, fixes booting in Quiz Avenue III, and Inoue MamiQuiz Avenue III   Inoue Mami - Kono Hoshi ni Tatta Hitori no Kimi  
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Hi.
I've played Spriggan Mark II - Re Terraform Project today.the Graphics is OK but sound is horrible (dialogue breakup, and music starting to play and then cut off) and when the dialogue is running it gives this sometimes "CD-DA set end mode, 0x00 contact MESSdev"
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Ok, thanks for the report, I'll check it out shortly.
EDIT: checked, mode 0x00 is currently right, it sets CD-DA with following parameters (in lha format):
2 3 4 5
05 26 17 00 START
00 40 28 13 END
So, it's clearly an HW bug since it's supposed to be 2-3-4 but Spriggan uses 3-4-5
As for the missing voices, it's the usual ADPCM bug that cuts off if the size is bigger than 0x10000 ... it should upload new data and trigger an irq when it reaches the end of the buffer but it doesn't seem to work properly at the moment.
Last edited by Kale; 09/30/10 10:33 AM.
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Oh, an update Preliminary transfer ready irq hook-up, makes Steam Heart's to enter into gameplay 
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Nice. It's always IRQs
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Arbee fixed CD-ROM pre-gap issues. Fixes Prince of Persia booting, and should improve CD-DA sync in several instances (Cosmic Fantasy, iirc):  
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I going try this game out later on. I never play any of the Prince of Persia games before.
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I going try this game out later on. I never play any of the Prince of Persia games before. They're really good, though you might want to try it on the Apple 2 or PC instead.
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offtopic http://www.hardcoregaming101.net/princeofpersia/princeofpersia.htmshows some interesting comparisons for PoP, and yes, the Sega CD and Genesis versions are very different despite being on basically the same hardware. The SCD looking like most of the Japanese ports, the Genesis one being all jazzed up, entirely different developers for both.
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Wow. I had no idea there were that many ports. Seems like a good candidate for a "MESS runs every version ever" screen gallery.
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I going try this game out later on. I never play any of the Prince of Persia games before. They're really good, though you might want to try it on the Apple 2 or PC instead. Play the Apple 2 version and marvel at what he did with four colours, then play the DOS version which is fundamentally similar but with more colours, then play the Macintosh version with its beautiful high-resolution graphics. It actually contains three sets of graphics for monochrome, low-res colour and high-res colour, so be sure to mess with your video settings to experience all of them.
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SNES version is also worth to play, with its extended gameplay which integrates quite well into the original part
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Apple II hi-res has 6 colors, not 4 And I'm amused by HG101's claim that the Apple II wasn't known for games given every classic home computer game of the 80s either originated on it or was ported to it.
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Great seeing further progress on this driver, thanks Kale and RB!
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FWIW, we're almost out of CD-related problems with the system now. Judge: is there any reason pce_new isn't pce now? I've been playing games with it and not only is it a definite improvement for things like raster effects, but the performance seems perfectly fine (it unthrottles to over 400% on my system, which generally means it's got good headroom downwards).
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My own reason was speed concerns. In a debug build it goes well below 100%, especially for sgx_new.
I have no problems retiring the old drivers in favour of the _new versions; you're free to do it, I have no local changes.
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debug builds are painful for many drivers unfortunately.
generally if the performance is acceptable on a decent core2 for the SGX in a release build then it should be fine, it's not unreasonable to tell people a core2 is minimum spec.
at least that's been my philosophy when working on things.
it's possible there are places performance can be squeezed out of the new code anyway, but keeping the old code active when it causes known issues makes less sense IMHO, right now the new code isn't getting used at all, by anybody so is only likely to rot faster than the old code.
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Added CD-DA volume control: 
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Alright. I'll do the switchover after work (I have a patch for Apollo from the original author that just came in as well). As Haze said, given that perf seems OK on normal builds and there are obvious improvements over the old code we might as well put our best foot forward. Plus this'll give the new code some testing and hopefully help with future PC-FX work.
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fwiw SGX holds > 100% on my 3ghz C2D (130-150%) so it should be fine, especially if there are still possible optimizations
granzort Madou Ou Granzort
appears to have no video tho, not sure about with the old core.
things like babyjo look much better when scrolling too because it's no longer doing non-integer scaling.
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For what is worth, PC-FX already uses the new code.
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Right, but obviously it's not yet getting much testing in PC-FX.
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fwiw SGX holds > 100% on my 3ghz C2D (130-150%) so it should be fine, especially if there are still possible optimizations
granzort Madou Ou Granzort
appears to have no video tho, not sure about with the old core.
I think it's something to do with the video mixer (HuC6202) and the prio_types, but can't really get it nailed down.
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The new video chip emulation is fantastic. Bomberman '94 intro glitch has been fixed and Gate of Thunder is as smooth as silk. Great work!
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Windows 10 Home 64-bit / AMD Radeon RX 5700 XT / AMD Ryzen 7 3700X 8-Core 3.59 GHz / RAM 16 GB
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fwiw SGX holds > 100% on my 3ghz C2D (130-150%) so it should be fine, especially if there are still possible optimizations
granzort Madou Ou Granzort
appears to have no video tho, not sure about with the old core.
I think it's something to do with the video mixer (HuC6202) and the prio_types, but can't really get it nailed down. That has now been fixed
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Nice. All of the SGX games are playable now
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great progress. will these changes make to 0.148?
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Don´t forget to add Anna´s computer driver. ; )
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There seem a graphics issue on SGX playing 1941. If it fix then don't reply this.
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1941 plays fine for me, as far as I can tell. What is your issue?
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Sometimes there like mess up graphics lines at the bottom on the edge. Can't tell if it white colors or what.
On the first boss stage. The plane go up and then the two tops going up from the bottom until the plane come back down.
Only play the first stage.
I will do a few more SVN updates tomorrow to see it gotten fix.
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Sometimes there like mess up graphics lines at the bottom on the edge. Can't tell if it white colors or what.
On the first boss stage. The plane go up and then the two tops going up from the bottom until the plane come back down. Happens here also. The Boss goes up and the top of the plane scrolls around and appears at the bottom 
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Running latest build, same result. 
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I think your pictures are in pixel aspect format which makes them look stretched out of all proportion. Not sure why the pixel aspect produces this result though?
Soldier Blade (U) is still crashing when the red ship flies overhead in the first stage.
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the reported issue is the part of the boss appearing at the bottom of the screen, and that is not due to the pixel format
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and that is not due to the pixel format Cool. To be honest I could only make an (ill)educated guess from the fact that when I put the driver in pixel aspect mode (544:121) it produces a similar result.
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well, I would expect it either to be due to priorities problem between sprite and bg or to be something happening also on the real hardware, but I'm at work and I cannot test the game atm
do you mean that the issue disappears depending on the video mode you choose?
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do you mean that the issue disappears depending on the video mode you choose? Not in this case, no. I was commenting on the fact that the screenshots provided by LoganB and Kaylee look similar to the result of displaying those games in pixel aspect mode (544:121).
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ah yes. snaps with F12 are always produced at pixel aspect unless you specify a different -snapsize value
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The previous driver code also had the same scrolling issue, so at least that behavior has not been introduced by the new code.
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if https://www.youtube.com/watch?v=OXCTLM30BAwis original hardware (I think it is) then it happens on original hardware.
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It definitely looks like hardware to me.
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I had other two videos showing the issue, but it was not clear if it was emu or real hw.
This definitely seems real
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OTOH, Cadash still looks like it's having a seizure. Perhaps an emulation issue outside of the video chips?
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I have a real sgfx and all 5 games. I may have Darius plus too. I know for sure I do not have alpha. If there is something you want me to verify I can. I also have a duo I can test with too.
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Oh OK so the graphics issue is from the real thing then. That makes sense now.
Does that explain why there not many games for this system? Hardware issues maybe?
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My understanding is that here weren't many games mainly due to lack of interest in the system. It wasn't much more powerful than the tg16/pce. And from what I recall, over priced too.
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Oh OK so the graphics issue is from the real thing then. That makes sense now.
Does that explain why there not many games for this system? Hardware issues maybe? More like a stop-gap system which wasn't a significant enough improvement over the base unit. After which NEC lost their way completely and spewed out more FMV games than you can count on the PC-FX while forgetting to make any real ones. (A real shame because the PC Engine CD was the exact opposite, a CD system used to actually produce better games unlike every single other one)
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Yeah, SGX was the kind of "upgrade" that made the 32X look reasonable. Pretty much a second copy of the graphics chip and VRAM and not much else changed.
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I saw where Kale had commented on the bug report ( 04950) that I submitted for pce.c [draculax]. I didn't have compiling tools to test before release, but I just tried draculax in 0.148 and it looks like the bug still exists.
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You should say so on the bug then
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MESS version: 0.148 (stable) soft-name: addfam status: supported cd-rom system: 2.1(cdsys) The following seens to be a normal behavior: After start game, you can't control character. After first hit, you gain total control of him... But that's dont: After jump second thumb, the game freezes... After die in a quicksand, the game freezes... http://www.youtube.com/watch?v=CGKpe2nxgdQ
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You should say so on the bug then LOL! I thought that I had left a comment on the bug report, but must have not clicked submit. *facepalm*
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We need a facepalm smiley Kale: any idea why this is still happening, since I gather you've looked into it before?
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Hi, I recently stumbled upon quite a neat English translation patch for the PC Engine CD version of Dracula-X, that even replaces the voiced dialogue with the official Konami English dub from Castlevania: The Dracula X Chronicles (PSP). For those who haven't seen it before, the patch can be downloaded from here: Castlevania: Rondo of Blood Translation.  Somewhat excited I've been playing this game, only to find out that it hangs in Level 2 in MESS  . Searching the forums I found a post from 2010 by Kale, which mentions the exact same "hangs here" for Level 2. His post is illustrated with the pictures here: Akumajou Dracula X - Chi no Rondo. Since Kale's post has been from two and a half years ago, I thought I'd raise the issue again, in the hope that one of the devs could take a look at it. Seeing that this is such a high profile game and now with the neat English translation and all, it would be really great if it could be fixed. (We really need a "fingers crossed" smiley )
Last edited by Dr.Venom; 03/07/13 12:59 AM.
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I've thought it was the video code, guess it isn't at this point and I was just lucky ... oh well, might check it out in the next days ...
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Great, hopefully you'll find something ...
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Too bad they replaced the dialogue with the DXC version. The SOTN "Die, Monster!" would've been more awesome
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I've thought it was the video code, guess it isn't at this point and I was just lucky ... oh well, might check it out in the next days ... I'll be very happy if this could be fixed... I'm waiting for a long time to play this in MESS (and nick of Arbee remember me every day that unfortunatelly this issues are there yet )
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Too bad they replaced the dialogue with the DXC version. The SOTN "Die, Monster!" would've been more awesome "Have at you!"
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I've thought it was the video code, guess it isn't at this point and I was just lucky ... oh well, might check it out in the next days ... Hi Kale, First of all thanks for all of your hard work and dedication to improving MAME and MESS, that's much appreciated. With regards to the PCE emulation, did you have the time/energy to look into the Dracula X issue? Hopefully it's not one of those "core emulation bugs"...
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I see some recent work in PCE emulation...
Was Rondo of Blood issues fixed already?
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not sure.
changes done today should have small or no impact to actual emulation (even if they will eventually allow for plugging/unplugging the cd add-on, which is now always attached to the unit)
however, recent improvements to the cd code by Arbee might have improved the situation, if the problem was in the cd code (did Kale ever find the time to investigate what the culprit was?)
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Rondo of Blood issues were in the video code; Kale was surprised that switching to the new more accurate VDP didn't actually fix it. No further action was taken. (As you can see about 5 posts before this in this very thread ;-)
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well, I had read last Kale's post, but he said "he *thought* it was the video"
so I was wondering if any further investigation had happened.
if it is confirmed to be video-related, then the issue is still there for sure
thanks for explaining
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Restored the PCE bugs wiki page at the request of Tafoid, but there was no content of that page archived, so it's probably a waste. http://mess.org/sysinfo/pce/bugsI do not plan to continue updating it. If no one sees a use for it, lemme know, I'll delete it. (Off-topic) The same goes for the GBA bugs page. http://mess.org/sysinfo/gba/bugs
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For PCE in general :
1°) In Final Match Tennis, when i switch 2 button joystick to 6 button joystick, it's like having DOWN stuck making the game unplayable. Perhaps the game doesn't support 6 button, but as it works under Magic Engine, i was wondering if it's a bug.
2°) CD emulation works but at first i have a black screen, then i have to reset (Slot Device>Reset) and then the CD-ROM system is launched.
3°) Why Double Dragon II CD is such a shitty game?
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Joined: Oct 2007
Posts: 300
Senior Member
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Senior Member
Joined: Oct 2007
Posts: 300 |
For PCE in general :
1°) In Final Match Tennis, when i switch 2 button joystick to 6 button joystick, it's like having DOWN stuck making the game unplayable. Perhaps the game doesn't support 6 button, but as it works under Magic Engine, i was wondering if it's a bug. Many games act like this (try R-Type Part 2, for example), it's a correct behaviour, Magic Engine is simply hacked (it's full of hacks, actually). 3°) Why Double Dragon II CD is such a shitty game? It's a brilliant game comparing to Golden Axe there
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Joined: Aug 2009
Posts: 1,180 Likes: 59
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OP
Very Senior Member
Joined: Aug 2009
Posts: 1,180 Likes: 59 |
For PCE in general :
2°) CD emulation works but at first i have a black screen, then i have to reset (Slot Device>Reset) and then the CD-ROM system is launched.
Can't reproduce. What did you try to launch in the first place?
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Joined: May 2012
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Senior Member
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Senior Member
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let say : "mess64 pce -cdrm pcecd:hyprcat2:cdrom"
(it's the interresting part of the command launched by qmc2, but i tried this on command line and got the exact same result : black screen > reset > OK)
EDIT : Tried with last SVN, a fresh mess.ini and no pce.ini but same result.
Last edited by remax; 10/26/13 10:14 PM.
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Joined: Mar 2001
Posts: 16,989 Likes: 84
Very Senior Member
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Add the CD system cart to the end of that command line.
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Joined: May 2012
Posts: 429 Likes: 1
Senior Member
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Add the CD system cart to the end of that command line. Ok, it works that way. There seems to be some kind of automount of the CD System on reset, it should be the same on first launch if nothing is specified. I'm going to warn qmc2 to fix this
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Joined: May 2010
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I reported an issue related to the PCE driver back in June ( http://mametesters.org/view.php?id=5215 ) and the automount glitch was discovered then. Micko is aware of the problem.
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Joined: May 2012
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Joined: Apr 2011
Posts: 292
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let say : "mess64 pce -cdrm pcecd:hyprcat2:cdrom"
(it's the interresting part of the command launched by qmc2, but i tried this on command line and got the exact same result : black screen > reset > OK)
EDIT : Tried with last SVN, a fresh mess.ini and no pce.ini but same result. I just figured out if you launch a game from QMC2 software list tab, at the black screen you can press TAB to access the internal UI then choose Slot Devices/Reset option. You will see the CD-ROM Systems menu then you can press Run and your game loads.
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Joined: May 2012
Posts: 429 Likes: 1
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Senior Member
Joined: May 2012
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I just figured out if you launch a game from QMC2 software list tab, at the black screen you can press TAB to access the internal UI then choose Slot Devices/Reset option.
You will see the CD-ROM Systems menu then you can press Run and your game loads.
Yeah, that's what i said i was doing in my post
Last edited by remax; 11/24/13 08:12 PM.
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Joined: Aug 2010
Posts: 105
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any chance, some of the developers could look into this bug? : http://mametesters.org/view.php?id=5249some time ago sound effects worked correctly on MESS, now only CD-DA is playing...
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Joined: Jan 2006
Posts: 3,690
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Very Senior Member
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I have broken it, and I have gone through the code several times, but I still haven't found where the culprit is. it might be something as stupid as a copy and paste mistake, or a typo, but I still haven't found it. also, typically developers go periodically through bugs even without requests
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Joined: Dec 2001
Posts: 224
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Just wanted to subscribe to this thread and be notified in case the black screen issue gets resolved. Keep up the good work guys.
The developers of MESS have my sincere gratitude. Thank you guys.
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Joined: Jan 2006
Posts: 3,690
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Very Senior Member
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as long as you add the "-cart cdsys" option, there is no issue in MESS: games just work
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Joined: Aug 2009
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3 years this thread not being updated, heh. Fixed Snatcher booting bug: ![[Linked Image]](http://mamedev.emulab.it/kale/fast/files/0112x.png) ![[Linked Image]](http://mamedev.emulab.it/kale/fast/files/0105x_6345174615.png) Also apparently the hangs are mostly caused by the raster IRQ having slightly off timing, for sure I can confirm it's a common issue for Dragon Slayer, XSerd, Conan, Image Fight 2, Air Zonk ... ![[Linked Image]](http://mamedev.emulab.it/kale/fast/files/0097x.png) Could it be a CPU core bug?
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Joined: Feb 2006
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RCR IRQ typically happens near the end of HDW period, V-blank IRQ typically happens near the beginning of HDW period after VDW period ends. I never got around to testing the exact timing, and the specifics of what happens with non-typical register values are kind of complicated(from a high-level perspective, a least). There are some games with "four-screen" codes, that when entered cause the games to use very non-typical register values for the pixel clock mode being used.
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Last edited by Mednafen; 09/24/17 04:28 AM.
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Ok, thanks for the tips I'll try something in these days, pretty sure it's not triggering at the end of the HDW anyway. As for four screen mode, it's goofy even on real HW: ![[Linked Image]](http://mamedev.emulab.it/kale/fast/files/shadowland.jpg) This is how it looks in MAME, it also doesn't "speed-up" like it should (on real HW it's totally unplayable like this lol): ![[Linked Image]](http://mamedev.emulab.it/kale/fast/files/0126x.png) The whole CRTC stuff doesn't seem well tested anyway, I looked at some of the Chris Covell stuff and they are mostly misaligned or incorrect: ![[Linked Image]](http://mamedev.emulab.it/kale/fast/files/0130x.png)
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Joined: Feb 2006
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I suspect that there may be a hidden internal counter in the VDC that upon expiration forces some sort of (early) horizontal line sequence restart regardless of input signals from the VCE(the signals from the VCE would still be used to reset/initialize the hidden counter), and that lines are long enough in the 10MHz pixel clock mode for it to be relevant. But it's just a hypothesis, haven't really tested it. Also IIRC, average CPU->VRAM write performance is disproportionately higher in the 10MHz pixel clock mode.
Last edited by Mednafen; 09/25/17 07:18 PM.
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Joined: May 2004
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maybe the 4 screen thing generates weird signals and only works with certain displays?
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Joined: Aug 2009
Posts: 1,180 Likes: 59
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Looks like it's still off one line or something: ![[Linked Image]](http://mamedev.emulab.it/kale/fast/files/0134x.png) ![[Linked Image]](http://mamedev.emulab.it/kale/fast/files/0138x.png) Logic seems to be otherwise right, there is stuff that still doesn't work but might really be timing (or CRTC parameters not being right)
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<- hangs here 
![[Linked Image from mamedev.emulab.it]](http://mamedev.emulab.it/kale/fast/files/0173x.png)
![[Linked Image from mamedev.emulab.it]](http://mamedev.emulab.it/kale/fast/files/0175x.png)
![[Linked Image from mamedev.emulab.it]](http://mamedev.emulab.it/kale/fast/files/0174x.png)
![[Linked Image from mamedev.emulab.it]](http://mamedev.emulab.it/kale/fast/files/0176x.png)