Home Page Forums MAME MAME The SNES WIP topic

Well, Dezaemon broke at some point, I'm sure I've even reported the sprite bug on the dead MESS wiki.

And yes, might take a shot about it (I think it's another bug a la Robocop 3, if not a CPU core bug)

the sram is now fixed (after dinner on svn too)

the gfx was glitchy even around MESS svn 57** revisions, so it broke long time ago apparently (if it ever displayed correctly)

I think it's not a secret that I'm slowly slot-ifying the cart code for snes

as a byproduct, I have a preliminary implementation of something that never worked in MESS before

for the record, current status is still quite disappointing. most games do not work at all, including BS Zelda, BS Excitebike, Radical Dreamers and Treasure Conflix (not surprising given that bs minicart implementation is just sketchy), some load but are unplayable due to glitches, like BS-X - Sore wa Namae o Nusumareta Machi no Monogatari



and a few work fine

some more snaps of working BS-X only games




Summing up, BSX status is:
* base unit : glitchy, flash access basically not implemented
* base unit + memory pack : mostly not working, as a result of incomplete emulation
* BS-X compatible games (ASCII Tskuru games etc.) : almost working,
* BS-X compatible games + memory pack : not implemented yet

about the rest of the code:
- LoROM and HiROM work pretty much as well as current code (just a few glitches I still have to track down)
- NEC DSP games mostly work like in current snesdsp (except for DSP3/DSP4 which suffer of some glitches, maybe related to the above ones)
- Seta ST-010/ST-011, SuperFX, S-DD1, SPC7110 & Sufami Turbo all work to the same extent of current drivers
- CX4 requires CPU properly implemented to remove the current hacky implementation
- other unsupported add-ons are still unsupported

Once the current code is cleaned up a bit, I will commit the progresses for larger testing...

Are these slotted BS-X games like SD Gundam G Next (J) + the data pack�s?

How about to support ST-018 and MSU-1?

that one, plus Same Game with the alt character data pack, plus the ASCII games supporting data pack as extension (these games just cannot read yet data from the data pack).
none of these are supported right now in my wip code, nor will probably be supported when I commit the code, but the new code builds the fundaments for later improvements which were not possible before



all add-ons will be supported eventually (including SA-1 and SuperGB), just not yet...
the main obstacle is my limited time in this period (+ my limited experience with writing CPU cores), anyway there is always hope that some other dev jumps in to help once the new code is in and MESS stops needing a new clone systems for every additional CPU

Ah ok.

SGB/SGB2 support will be great.

That's looking promising. Also great to see further progress made on the the SNES driver

Would that mean that after the commit the SNES driver might also be affected by the "writeconfig" issue, as reported for the Genesis driver, or are those not related?

the writeconfig thing affects all the drivers using slots, so possibly also c64, ibm pcs, iq151 and another dozen of system... hence, yes, even snes would have the same problem. but you are lucky and the bug is going to be fixed by judge very soon

concerning snes, the new implementation will be added initially as a separate driver (snesnew/snesnewp) until new gfx glitches are sorted out...