Bangai-Oh VGA Patch

[loki101]

this is a real game changer for the dreamcast all thats left is to get all the online servers under one roof thats wishful thinking

[fraggle200]

Well, after some pretty basic testing I've ended up with the same result as @Ant2no78. I'm running DCHDMI HW1 in 1080P for these images.

Here's the VGA output

vga.jpg



Here's the Cable Select output

cable select.jpg


Maybe it's just my eyes but with the Cable Select mode selected you get the raw pixels, which is what I'd have thought we would have got with VGA. Looks like there's some sort of filtering happening to the VGA signal as it's fuzzy/washed out, for the lack of a better term. Looks like in "Terry", we're starting to lose the top and bottom of the lettering when in VGA, compared to Cable Select.

Well as an update to this saga, I got a HW2 DCHDMI and installed it last night. Same issue. eugh!!! think there's an issue with the flex but it all test ok on both HW1 & HW2, not sure what values I should be getting from various points etc so have asked on the PixelFX discord to see if there's any pointers.

[Panja0]

Damn! That's f*ck3d up! Hopefully you get it fixed....

[fraggle200]

at this rate I reckon I'll just yeet the current flex out the window and put the 1 that came with the HW2 on and see where I'm up to.

UPDATE: reflowed everything on the flex. still the same. took the flex off and it lifted 2 pads on the video DAC. FML! got a cheap DC on fb so waiting on it arriving to do a fresh install. Sadly if this fixes it, I'll never know if it was the board or the old flex.

[pitito]

Thanks to the patch for Air Force Delta US provided by @TapamN, I was able to locate the values for DEADLY SKIES (PAL version of the game)
File 0.000 (It is the game binary)
offset
0xFF16 change 2AE4 to 01E4
0x170BE2 change 8002 to 4001
0x1A726A change 01C9 to 01E0

Previously I posted this VGA fix to the Pal Deadly Skies version (Airforce Delta US version VGA fix thanks to Napalm).
I have discovered two screen decentering errors in VGA mode.
The first error is when loading the game directly, when selecting a mission the map appears off-center.
This only happens in this period, if you leave the intro or start a new game or as soon as you play the centering values are rewritten and it will be corrected automatically, but if you load the game from the main menu as soon as you start the game this problem will occur...

The other issue comes with the third person camera while playing, and I think someone reported this.

Well, I have managed to fix both problems, only in deadly skies.
If anyone wants to correct the problem by searching for these values in airforce delta, they are free to do so.
offset binary file 0.000
0x150AEC change 00002044 to 0000C043
0X150AF4 change 0000F043 to 0000D843
0X150EE0 change 43F3 to 53F3
0X150FE8 change 00000040 to 9A991940

These changes will solve both

[ateam]

Well, I have managed to fix both problems, only in deadly skies.
If anyone wants to correct the problem by searching for these values in airforce delta, they are free to do so.

Thanks for contributing this! I've applied these fixes to the NTSC-U version.

Would anybody familiar with the game like to test to ensure everything is working as expected? Seems okay to me.

Airforce Delta (VGA Compatible - FIX TEST 1) [GDI].zip
https://drive.google.com/uc?export=down ... ik0V35vIbx

EDIT: I tested the latest version of the Airforce Delta VGA patch I had, and can't reproduce either of those two issues you reported, Pitito. The map and the third-person camera view both look perfectly fine. Not sure this update is needed for NTSC-U?

[pitito]

Well, I have managed to fix both problems, only in deadly skies.
If anyone wants to correct the problem by searching for these values in airforce delta, they are free to do so.

Thanks for contributing this! I've applied these fixes to the NTSC-U version.

Would anybody familiar with the game like to test to ensure everything is working as expected? Seems okay to me.

Airforce Delta (VGA Compatible - FIX TEST 1) [GDI].zip
https://drive.google.com/uc?export=down ... ik0V35vIbx

EDIT: I tested the latest version of the Airforce Delta VGA patch I had, and can't reproduce either of those two issues you reported, Pitito. The map and the third-person camera view both look perfectly fine. Not sure this update is needed for NTSC-U?

Airforce Delta US VGA Only Patch

Code: Select all

RAM addr   Track30 addr   
8c01ff0e	048A1A5E   change 28 e4 to 01 e4
8c1499a2	049F78B2	change 80 02 to 40 01
8c18002a	04A360AA	change 01 c9 to 01 e0

Codebreaker:
0f01ff0e
0000e401
0f1499a2
00000140
0f18002a
0000e001

What is the last?
I've only seen this one...

[ateam]

What is the last?
I've only seen this one...

https://www.dreamcast-talk.com/forum/vi ... ce#p175767

You can try this VGA-patched disc image I built last May to see if it behaves as expected, or has problems. From what I saw, it was fine.

Airforce Delta (VGA Compatible) [GDI].zip
https://drive.google.com/uc?export=down ... h6Ogu8NQca

[pitito]

What is the last?
I've only seen this one...

https://www.dreamcast-talk.com/forum/vi ... ce#p175767

You can try this VGA-patched disc image I built last May to see if it behaves as expected, or has problems. From what I saw, it was fine.

Airforce Delta (VGA Compatible) [GDI].zip
https://drive.google.com/uc?export=down ... h6Ogu8NQca

Well yes, this seems to be going well...
If I had known, I would have saved the time spent searching for the values to patch.

I'm going to try to pass this patch to deadly skies and see if it behaves the same

[Retrofan21]

What is the last?
I've only seen this one...

https://www.dreamcast-talk.com/forum/vi ... ce#p175767

You can try this VGA-patched disc image I built last May to see if it behaves as expected, or has problems. From what I saw, it was fine.

Airforce Delta (VGA Compatible) [GDI].zip
https://drive.google.com/uc?export=down ... h6Ogu8NQca

This patch is working for me and I uploaded footage of the patch. Thank you. https://www.youtube.com/watch?v=lg5bHj0O75c