MV1F Graphical probelms

[jesesfbi]

First of all I need to thank Xian Xi with his helpful Z80 pinout because I was able to revive this dead Z80 error board I had.

Now to the main problem, Most of my games seem to not work with this board. Some games work without issues(so far I tested Strikers 1945+,Fatal Fury, bust a move), some have graphical glitches in the intro screen but the game plays fine(pulstar) the intro screen seems to be garbled graphics. Shock troopers has a slight graphical glitch in the intro then when it gets into the how to play instruction screen it glitches out and resets. Metal slug 2 doesnt get past the neo geo screen then resets while Metal slug 3 goes to the main screen(when I hit start it resets).

I did clean the cart slot, i checked the connection between the LSPC2 and B1 and traces seem fine what else should i check for?

 

[fremen]

Hi dude,

You can use the smkdan's diagnostic bios and try to know the problem.

Un saludo

 

[jesesfbi]

Hi dude,

You can use the smkdan's diagnostic bios and try to know the problem.

Un saludo

I thought the diagnostics bios only did it for the Z80. Im not getting a Z80 problem anymore.

 

[fremen]

Hi,

The diagnostic bios can be use to detect a lot of problems not only the Z80 error. My recommnedation is to read this

http://www.neo-geo.com/forums/showthread.php?236157-Neo-Diagnostics-ROMs

Un saludo

 

[jesesfbi]

Hi,

The diagnostic bios can be use to detect a lot of problems not only the Z80 error. My recommnedation is to read this

http://www.neo-geo.com/forums/showthread.php?236157-Neo-Diagnostics-ROMs

Un saludo

Well then its time to pull out my broken Cha boards to use for the diagnostics M1 rom and time to go get a 1024 Eprom to burn the diagnostics bios to then.

 

[jesesfbi]

okay from doing some digging around I did see this wiki post https://wiki.neogeodev.org/index.php?title=Graphic_glitches#Lower_address_lines_2
and it looks like my problem is closer to the higher address ones :/. with the games that don't work.

The reason why I listed the carts I used in my first post was to cover my bases I went and test all range of the meg count i had available. I also tested it with 2 different 5V 3amp power supplies and still no change.