Is it possible to patch DOSBox so that it has a non-blinking block cursor in text mode? For many situations, I can use NoBlink Accelerator, which is legally and freely available on my website here:

http://www.columbia.edu/~em36/noblink.html

But this works only in 25-line modes, and it causes a lockup when used with mode 7 (mode mono). It would be nice to have a non-blinking block cursor in other modes than mode 3.

I don't know if this is possible, but I hope it might be an interesting challenge for a programmer.