MiSTer FPGA Forum

I am in the U.S. and have a Twin Cobra PCB. It is something I bought in 2009 and never tested/played. I don't have a Mister but do have an Analogue Pocket. I am ignorant as to what arcade games/cores are available for the Mister. I was wondering if a core containing Twin Cobra has been released? If not, are any devs interested in reverse engineeri...

Raizing:
- Improvement for sprite engine stability.

Raizing:
- Various fixes for GP9001 stability including priority level logic.
- Fix for CPU interrupts in Battle Bakraid.

Raizing:
- Battle Bakraid: Stable fix for Copy Protection. Free Play dip no longer should cause scroll layers to randomly disappear. I had a fix for this in the last release, but found a better solution that works for both the pocket version and MiSTer, so synchronizing the code.

Raizing:
- fix issue with mirrored sprite seam calculation (ie. batrider intro tank missing 1 pixel at the end due to 2 sprites, 1 mirrored, joined at a seam).
- improve performance of obj engine due to lower clock change to 94.5.

Raizing:
- Override build_id.tcl script to automatically inject build date in cfgstr.
- Fix mapping of fx level option (high=100%, very high = 200%, very low = 50%, low = 75%)
- Adjust default fm level of batrider to 50%.
- (Hopefully) fix issue with scroll layers disappearing when free play dip is set in bakraid

Raizing:
- Adjust ym synth volume for sorcer and kingdom.
- update sprite lag implementation to be more generic.
- copy mras from rom/ to releases as the releases dir had old mras.

Raizing: - Adjust timing for audio in sorcer and kingdom (again) - Adjust all cores and meet all timing constraints - Swap pll properly to 94.5 mhz for SDRAM compatibility, adjust all clocks and frequencies - Add 2 build profiles for each core, one for development purposes (fast build) can get you an RBF in 8 mins, but not meet timing constraints 1...

Raizing:
- new pll for 94.5 frequency added for compatibility with more SDRAM modules. Thanks atrac17 for testing.

Raizing:
- Adjustments on sound/z80 for sorcer and kingdom

Raizing:
- Implement Sprite Priority Shift mode for gp9001 (needed to display Skull Howard boss properly in Sorcer Striker).
- Fix for sound speed in Sorcer Striker and Kingdom Grandprix (3.375mhz on Z80 instead of 4 listed in MAME).
- Flip dip center image (thanks @atrac17)

Raizing: - Hiscore table save for Battle Garegga. To save hiscores, use the osd menu option to save config,.and nvram will be dumped out to the SD card and reloaded back again on next launch. - Fix PCM banking for Kingdom Grandprix that resulted in sound samples being missed. Now all samples play properly. However, the sound speed fix is still pen...

Raizing:
- Enable hiscore table save for batrider. To save the hiscore table, go to the osd and save settings to dump out the nvram to the SD card. It will be auto loaded the next time you boot the game. Additionally, a default hiscore table is included in the MRA.

deimos256 wrote: ↑Mon Aug 08, 2022 11:24 pm Finally got this working on a PVM, but I agree this limited screen flip is annoying as every other core I've managed to get rotated in the same direction.

I did this today.

Raizing:
- implement screen flip dip switch. Enable this in the dip switches menu to flip the screen 180 degrees in the other direction. This was requested from CRT users who had monitors physically turned the opposite way.

Yes, this is the toaplanv2 core you all have been waiting for! Mabe now folks can stop bugging me about calling the raizing core the toaplan2 core, because it's not!

Raizing:
- fixing dtack setting on 68k that resulted in sluggish gameplay in some spots.

Raizing:
- Sprite Flickering Fix for gp9001

Raizing:
- Sound Pause Added (Thanks Zakk)
- Backend centralization of gp9001 code
- gp9001 graphical fixes
- sprite lag adjustments for Garegga, Batrider & Bakraid

There is one thing I noted and maybe I'm wrong but the sound mix in Garegga seems to be kind of odd. It's like the music is much louder than the effects, even with FX set to max the voice samples ("Level Up") are hard to hear. Also in the music the bass line is very loud while the drums are really low. Maybe someone with the original cab...

It wouldn't come from me, but actually I have checked via my modelsim test bench that at least my gp9001 implementation will work with truxton 2. I have a test bench where I can dump out the relevant rams from mame concerning the gp9001 and then load them into the test bench along with the gfx roms to see if that frame will render properly or not. ...

That's not true about the specifications by the way. I have the real board and there's only a Z80 for sound and a 68k for program. There's no 10mhz CPU anywhere on the board or in the design. It's actually not much different than batrider except they improved upon the sound capabilities with an upgraded PCM chip. Secondly, the first phase of the ef...