Cosmic Guerilla

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Back when I did the Z80 based 'cosmic' games I planned to complete the set with Cosmic Guerilla.

This was a bit more work that I expected as the TMS9900 is not exactly a drop in replacement for the Z80.

Different memory access signals, ports are accessed using something called a CRU which I'd never heard about and doesn't even use the data bus.

Needs a little cleanup before checking in to ensure everything works and most of the random debug code is removed, but hopefully be added to the repository by next week.

CosmicGuerilla.png (21.45 KiB) Viewed 3052 times

n.b. real board uses a TMS9980, which is basically a TMS9900 with 8 bit bus

[Alkadian]

Super! Many thanks!

[LamerDeluxe]

Awesome job! I always love seeing these early arcade games being added to MiSTer.

[Alkadian]

Indeed! What a great time to be alive

[Chilli_Vibes]

Great game, that also had (like many "Universal" cabs at the time) a great-looking arcade cabinet.

https://www.flickr.com/photos/10707024@N04/50175736033

Looking forward to this.

[Alkadian]

Wow what an awesome looking arcade cabinet!

When I was a kid I was constantly dreaming of having such a glorious cabinets line up in my bedroom

[Sparkoids]

Fantastic - I love this game

[HerrBerzerk]

Great game, played it a lot. How about the sound? Did you use samples or is the sound already digital?

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Great game, played it a lot. How about the sound? Did you use samples or is the sound already digital?

All analogue so until I get my maths degree it's done using samples.

[Alkadian]

Great game, played it a lot. How about the sound? Did you use samples or is the sound already digital?

All analogue so until I get my maths degree it's done using samples.

Thanks a lot for the release of this new Arcade core!!

[Arcatech]

Thanks Mike, just played this and it plays and sounds exactly how I remember it back in the 80's

[HerrBerzerk]

All analogue so until I get my maths degree it's done using samples.

Thank you. Better good samples than quirky sound errors like on so many cores.

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Slight update. Option to toggle blue background in colour mode.

I was in a retro arcade in Norwich last week and noticed that their cosmic guerilla cocktail had a blue background (as does the flyer for the cocktail)

The schematic does not show anything that would achieve this, but it would only need a resistor and a couple of wires, and most cosmic guerilla PCBs I have seen have loads of these added on!

[Arcatech]

Slight update. Option to toggle blue background in colour mode.

I was in a retro arcade in Norwich last week and noticed that their cosmic guerilla cocktail had a blue background (as does the flyer for the cocktail)

The schematic does not show anything that would achieve this, but it would only need a resistor and a couple of wires, and most cosmic guerilla PCBs I have seen have loads of these added on!

Thanks for the update, just looked at a cocktail on the web and must admit never realised the cocktail version had a blue background as I have only ever played the upright version in the arcades...great attention to detail Mike!