Started to look at the protection in Heavy Unit & did some video tweakery with Haze (still some scrolling issues, we’ll hopefully fix that shortly).

Notice that I don’t promise anything about beating the protection in there, if this game was never properly emulated there’s a reason…

Currently writing a driver with Andrew Gardner & Roberto Fresca, King Derby by Tatsumi.

Initially this driver was going to nowhere (it uses 3  z80) , but after some exaustive work we got this:

There’s still lots of work to do, plus colors needs a undumped color prom  (it’s currently using the default MAME palette). And, if you were wondering, yes, this is the original version of  Cow Race.

Fixed colors and sound in Go 2000.

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Interestingly, the sound memory map seems an updated version of the one seen in Ultra Balloon (with one 8-bits DAC instead of two 4-bits as the only difference). And SA seems a contraction of SunA, maybe this is their last game before being acquired by Unico/Uniana?

*edit* : Realized that this game also uses the same sprite chip as SunA 16 HW, game now fully working:

Fixed colors and inputs on the longly forgotten Super Draw Poker, working in the next release:

About the colors: can anybody knows how much they are accurate? It’s all guesswork, without any reference.

EDIT: thanks to Reip, I’ve seen a screen of the original thing. Colors are correct but the game uses a weird “global column coloring” feature on the text layer. I’ve hooked up something, but I can only assume that my implementation is correct, it needs schematics to be 100% sure.

In the past couple of days I’ve heavily improved the blitter emulation in both Il Pagliaccio & Strip Teaser:

Il Pagliaccio

Strip Teaser

They aren’t yet playable due to some form of protection (shared ram with a MCU/PIC for both), we’ll see in the next couple of days if it can be beaten for both.