ripsaw8080 wrote:I tried it in DOSBox 0.74 and SVN. I'm not certain of the version of Sopwith I'm using, it isn't labeled with a clear version number, but it is more complicated (has flocks of birds) than another one I've seen.
After setting full throttle with the X key, I hold down comma to fly in a loop, then pressing spacebar (with or without holding it down) to fire bullets does not stop the loop, and pressing B to drop a bomb does not stop the loop or stop the firing of bullets. So, I don't see the described problem in the first place. For startup options I chose S for single-player and 3 for IBM Keyboard only.
You are also playing sopwith 2 which, after rechecking, does work the way you describe. You can keep a loop and fire at the same time.
Just to clear any confusion because also the OP showed a video of sopwith 2:
This is the starting sceen of the original sopwith (1984), having no menu music:
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And this is sopwith 2 (1985):
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In the first game firing while looping breaks the loop, in #2 it works.