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Hi Eke,

i have found out Defender (included in this pack) does not have sound at the beginning of the game play on Regen and Genesis Plus GX 1.3.0. After a little while, it suddenly comes up (on Regen only, but i suspect it could be happening as well on latter versions of GPGX).
Unfortunately, i ...

DIVU doesn't set the N flag correctly when there is an overflow. The manual doesn't tell how it should be set, so someone has to test it on a real Mega Drive.

I found that putting $6D00 at location $EDEA fixes the problem. I don't know what to do about the messed up textures in the first room ...

on a side note, exception and TRAP0 entry points have quite unexpected values in the ROM header , seems to point out of ROM area (above $200000)...

I have no way to test right now, but try to mirror ROM data above $200000 or change the exception vectors to fit in within ROM and see what happen ...

Have you verified it does not happen similarely on real hardware ? The fact it crashes in every emulator the same way seems to indicate a game bug but you never know, could be bad documented cpu flag or instruction.

I have verified it on real hardware (PAL MD-1) and it does work beautifully. No ...

Hi,

we have found a weird bug in this game. As soon as you enter the room, turn right and get the player just in the corner. Then, turn the player left slowly, and you will eventually see some perspective errors and a blackish screen which locks up the emulator. Regen 0.972, Genesis Plus GX 1.4.0 ...

Just for the record, Cuty works fine on 1.3.0.

just curious, are you working on the DC port or is it another emulator project ?

It is a Gens port for DC. Needless to say, yours is the most accurate Genesis emulator ever and it is very fast as well. Simply brilliant. But i did not know about your ...

One thing I noticed about the wrestling game is that it uses two 64x64 planes in a way that plane A is for the left character playground, while Plane B is for the right character. The 2 planes are horizontally scrolled independently and can overlap (with A being displayed over).

Now, the ...

According to the code , it does not seem 1.3.0 applied vertical scroll value to the left column when fine horizontal scrolling is used. Did you tried Gynoug on this old version as well ? If left column is disfigured in this one but not in that other game, then it's probably a bug somewhere else in ...

Just curious, are you testing this with Genesis Plus? I did a lot of research to make sure the leftmost column scrolled like it does on the real hardware for 40 cell mode. But now that I think about it, I may have not tested 32-cell mode and assumed the same rules apply...
I checked. Genesis Plus ...

Gynoug works fine on real hardware. F1 also looks fine in one youtube video i had a look at the other day, but would check on the real thing before stating anything.

(2) In F1 World Championship (demo mode), the left-most 2-cells are sometime not vertically scrolled correctly. It's because vertical scroll value should not be added for the first 2-cells when the horizontal scroll value makes them only partially displayed (fine scroll value).

Eke,

this fix ...

I am trying to understand the events involved. I cannot get them to work as expected. This particular game seems to require an accurate event handling, and that is why i posted.
There are nice threads explaining some of this stuff, though.

Hi All,

I am new to this forum and first of all i would like to thank everyone actively involved in this. It is very nice to have someone else out there to learn.

I am working on a Genesis emulator and at the moment i am trying to figure out what is going on in this game. At the very beginning, i ...