Home Page Forums MAME MAME The new for 2021 WIP thread

Clamped the sprites to the sprite coordinate space rather than the layer size. Fixes the bottom of SofB2.

Fixed the visible area so Cotton is correctly stretched. The score bar is correctly opaque, at least in videos from unknown sources, too but the part above should either be black or in the overscan area. It's a bit neat to see the keyboard lights which seem to act as some kind of music visualization.

Fixed the Mid-garts opening sequence.

As part of that fix most games have 512 lines now.

Edit: Fixed crash due to unimplemented dmac transfer array chaining. To run the actual game you have to boot the machine from disk 2 as disk 1 only contains the intro.

another one I'll have to have a look at one stream

I've been testing a few more, and noticed that "ilmlaser Illumination Laser Rebuild" runs the menus in super slow-motion with the regular x68000 driver, but the menus are ok with the 16mhz 'x68kxvi' driver. Is that the same in other emulators? (if you manage to start the game it's fine in both drivers, it's just the menu where it's trying to do some raster effect that's painfully slow on the regular x68k)

there also seem to be quite a few games I can find videos of that aren't softlisted, so I guess some games need locating and documenting, unless they only exist in unsuitable formats.

It's a regression in .232 as it is okay in .231.

Edit: Fixed, timings for the opening are very tight and refresh for the mode it uses were too fast. It uses hsync irq for the title effect and before when they were suppressed during vsync it had extra time to work with. Further testing shows that change to fix terra drive is correct and the slower refresh is also right.

midgarts crashed when I reached level 3 on stream btw

I seem to recall some other videos of the game play some kinda awful sounds at this point (death for those enemies?) could be related.

Yes I saw that and the audio in XM6 does freak out there. It's loading the adpcm dma channel with bad data which seems to halt the cpu with a bus error. Maybe the dmac isn't supposed to cause bus errors? BTW, I did find a cheat 0x3ed1e is the lives counter.

hmm I wonder if ADPCM is just meant to read blank data rather than causing a bus error in that case then (I guess XM6 doesn't generate the bus error, but does feed it garbage?)

was there an older non-gold Mid Garts release? maybe they cut a sound but forgot to remove the trigger? (or could it be a bad dump? failing to load a sound it needs?)

Mid Garts was for PC98 (and MSX, etc): [video:youtube][/video]. Mid Garts Gold is a modified version (shooter instead of adventure hybrid) that came out later the same year on the x68000.

ah interesting, didn't know that, explains why it is so story heavy anyway. I'm curious to know if there are any original hardware videos for the x68k version to know if there's meant to be a sound effect at the point it crashes which isn't just garbage however (and if the dumped disk has ever been tested on hardware)

(this original release looks like a much better game too, although I guess it relies on more Japanese knowledge)