Archive for March, 2009

Mixing chocolate and milk

Monday, March 30th, 2009

I’m been busy with the Sega Naomi HW stuff with Haze and ElSemi. Thanks to the latter, I’ve implemented a JVS unimplemented i/o command used by the later games of this hardware. Now Ikaruga (and others) can be coined up and are playable (although still in wire-frame)…


As a bonus track: thanks to some internet research there, I’ve fixed one of the most long standing bugs that afflicted Idol Janshi Suchie-Pai Special with the back layer pens.


Priorities still need fixing in that driver though (needs some side-by-side tests).

Last but not least: thanks to my site admins for the new blog skin. 😉

Presents: the Death Valley

Friday, March 13th, 2009

My road-trip pointed me to Counter Steer, the other GNW in the zerotrgt.c driver. Seems to be similar but not the same HW as Zero Target, video part is improved/changed over the other game (for example the roz can do a full 360 rotation) and it currently needs a kludge to let it boot due of a weirdness into the comms. Colors uses default MAME palette because proms are undumped for this one, yay…

00221 0025

00261 0024

According to the data, it’s identified as a Zero.

Tuesday, March 3rd, 2009

By request I’m been looking at the Zero Target / Gekitsui Oh driver. I’ve fixed the sound and started to look the gfxs in there…

0020 0021

0022 0023


I’m not 100% sure about the colors in there, for sure the hud uses a vram attribute for the “junctions” and that’ll explain why colors are wrong especially for these parts. The rest looks correct but awkward, anybody has a screen of the original game?

EDIT: thanks to various guys that reported to me about the NV video, edited the page with the proper correct colors ^_^

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