Canyon Bomber emulator/source code port without the source

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tricky
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Canyon Bomber emulator/source code port without the source

Post by tricky » Sun Sep 13, 2020 9:43 am

I've just finished a new port for the beeb of Canyon Bomber.
Like my other "emulator" games it is actually a source code port, but with source code that comes from me disassembling the arcade ROM.
I don't want *. to get accused of distributing arcade ROMs, so the game loads the original ROMs and patches them to attach my beeb layer.
It expects one file called ROMS that would be what you would get if you loaded your ROMs into MAME and then saved the memory range.
ROMS is the ROMs that decode and load from &3000-&3FFF inclusive.
The game will be in B/W+grey on a NuLA, but the NuLA can be disabled by running *NoNuLA.
It looks like it might be quite fun two player, but I don't have anyone to play against!

https://youtu.be/Yy5RW7aDK98 best watch in 720p on a 50Hz monitor.
If you have a legal copy of the ROMS and are having difficulty making the appropriate files, please PM me.
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CanyonBomber-no-ROMs.zip
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kieranhj
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Re: Canyon Bomber emulator/source code port without the source

Post by kieranhj » Mon Sep 14, 2020 6:55 pm

And again, good job with this port. It's a funny little game, that I'd also never heard of, but quite addictive once you get into it, as you say. I love the NULA version in dreary grey, very authentic! :D I think I like your MODE 1 colour choices better. Enjoyed the video again too.
Bitshifters Collective | Retro Code & Demos for BBC Micro & Acorn computers | https://bitshifters.github.io/

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Diminished
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Re: Canyon Bomber emulator/source code port without the source

Post by Diminished » Mon Sep 14, 2020 7:53 pm

Good stuff trickster.

What was the original machine's clockspeed? How about the frame rate? Did you have any 50/60 Hz nonsense to deal with?

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tricky
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Re: Canyon Bomber emulator/source code port without the source

Post by tricky » Mon Sep 14, 2020 10:52 pm

I can't remember, but I think it is about half the speed of the beeb.
The game probably thinks it's running at 60, but I haven't got the heart to tell it that it is now running at 50 ;)
I quite like it and I'm curious to see how it is reviewed at shows.

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