Search found 13 matches
- Fri Aug 06, 2010 6:26 pm
- Forum: Megadrive/Genesis
- Topic: Williams Arcade Classics sound
- Replies: 7
- Views: 5229
Williams Arcade Classics sound
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 can...
- Thu Aug 05, 2010 12:57 pm
- Forum: Megadrive/Genesis
- Topic: Blood Shot issue
- Replies: 10
- Views: 6423
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, thou...
- Wed Aug 04, 2010 2:52 pm
- Forum: Megadrive/Genesis
- Topic: Blood Shot issue
- Replies: 10
- Views: 6423
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 ? No...
- Wed Aug 04, 2010 9:37 am
- Forum: Megadrive/Genesis
- Topic: Blood Shot issue
- Replies: 10
- Views: 6423
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 gli...
- Tue Aug 03, 2010 9:49 pm
- Forum: Megadrive/Genesis
- Topic: Blood Shot issue
- Replies: 10
- Views: 6423
Blood Shot issue
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, K...
- Sun Aug 01, 2010 5:57 pm
- Forum: Video Display Processor
- Topic: 2-cell vertical scrolling + horizontal scrolling
- Replies: 36
- Views: 29552
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 pro...
- Fri Jul 30, 2010 12:56 pm
- Forum: Video Display Processor
- Topic: 2-cell vertical scrolling + horizontal scrolling
- Replies: 36
- Views: 29552
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 interestin...
- Fri Jul 30, 2010 12:01 pm
- Forum: Video Display Processor
- Topic: 2-cell vertical scrolling + horizontal scrolling
- Replies: 36
- Views: 29552
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 ...
- Thu Jul 29, 2010 1:26 pm
- Forum: Video Display Processor
- Topic: 2-cell vertical scrolling + horizontal scrolling
- Replies: 36
- Views: 29552
Re: 2-cell vertical scrolling + horizontal scrolling
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 w...
- Tue Apr 13, 2010 3:01 pm
- Forum: Regen
- Topic: FM Timer B bug + VDP vertical scrolling bug
- Replies: 6
- Views: 16724
- Mon Apr 12, 2010 12:09 pm
- Forum: Regen
- Topic: FM Timer B bug + VDP vertical scrolling bug
- Replies: 6
- Views: 16724
Re: FM Timer B bug + VDP vertical scrolling bug
(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 does n...
- Thu Apr 23, 2009 2:09 pm
- Forum: Megadrive/Genesis
- Topic: International Superstar Soccer Deluxe DMA issue
- Replies: 2
- Views: 3508
- Wed Apr 01, 2009 2:21 pm
- Forum: Megadrive/Genesis
- Topic: International Superstar Soccer Deluxe DMA issue
- Replies: 2
- Views: 3508
International Superstar Soccer Deluxe DMA issue
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 ca...