Gradius II Conversion Help (Cue Brick PCB)

[darkchao]

Hey all, I’ve hit a wall with this and could use a hand. I’ve burned ROMs for Gradius II for a Cue Brick PCB, and it’s telling me all of the RAM above the 4MEG EPROMs are bad.

Specifically, M14, M15, M17, and M19

I’ve run the same ROMs in MAME with no issues. Does anyone have any idea why it’s throwing these errors?

Thanks for any thoughts!

 

[Derick2k]

Can you post a pic of the board you are using?

 

[ekorz]

Off the top of my head it looks like cuebrick uses nvram differently than the other titles. Maybe the ram tests interact with that in some way? You could test/recreate in mame by swapping the roms after booting it once as cuebrick so the nvram populates.

If you can boot into settings/test try clearing it from there, if there’s a factory reset option. Otherwise some Konami boards clear the nvram if you boot while holding test or service button.

 

[twistedsymphony]

Can you post a pic of the board you are using?

^This
Cue Brick was released multiple times on different hardware, and only 1 of them is a conversion candidate.

 

[Hammy]

If it's the correct PCB with the "battery board" please sell me the battery / ram PCB when your finished - have been looking for it for years (we will get it reproduced..)

 

[darkchao]

If it's the correct PCB with the "battery board" please sell me the battery / ram PCB when your finished - have been looking for it for years (we will get it reproduced..)

This one? I’d love to know more about it and see it reproduced!

Can you post a pic of the board you are using?

Absolutely!

The RAM in question are the ones located right above the larger EPROMs on the back PCB, right above CN3.

I tried forcing a RAM clear by holding TEST and SERVICE (and both at once just for the hell of it) with no luck. I’m about to take the romset and force it to run in MAME as Cue Brick and see if the problem happens digitally as well.

 

[Hammy]

1. You are using the correct PCB

2. The ram board is correct! It's for high score saves for cue brick, but i'm sure other games can be hacked into high score save and utilize it. If you are good to sell/loan it , please send me a PM!

3. Likely the board has bad ram (OR MORE LIKELY - FUJI's)- cuebrick does not push the hardware....