It's really random when it actually sticks. Stops sticking when I press another button.

I have a dual core processor in my dell laptop with an ati integrated graphics card.

I was just gonna play through the whole game and ignore it but seeing as it does the same thing on blake stone I assume its a problem with dosbox and I thought I would ask.

does it still happen if you reassign the movement/turning keys (e.g. use the keypad, or a completely different place on the keyboard)?

how about playing with the cycles?

Set the keys to I K J L and yeah it still did the same thing. Played with the cycles a tiny bit, but could try experimenting with em a little more.

Wonder if dosbox might have a limit to how many keys that it can handle being pressed at a time?
I'd just use a mouse instead but I'm using a touchpad so yeah.

btw it does the same thing in doom. Just confirming that it's not just wolfenstein, and blake stone.

I was just now playing zone66 and in the menu's the keys get stuck so its not just the left and right keys.

I'd suggest looking up a keypress test utility (one of those things that show you on-screen which keys are pressed/released), there should be many of those for all operating systems. Run one in DOSbox, run one natively on your host OS, see if in any/both cases it fails to take note of released keys.

Maybe do a quick web search and check whether SDL has known problems with the keyboard on your specific laptop model and OS.

Vilerancour thanks for your help. I ran it at 19000 cycles and that seemed to fix it. I'll try the keypress util if I run into a problem again. 😀