Stas Sergeev

Andrew, what do you think about starting tests in parallel? Something like a 10x speed-up?

Added coopthreadization of msdos.c. Not sure how stable it is, but the only way to find out - is to merge. :)

Tests failing: https://app.travis-ci.com/github/dosemu2/dosemu2/builds/243153750 `E: Unable to locate package comcom32` Seems like it complains to no GPG signature for our PPA. Andrew, can you please disable signature checks?

Thanks for checking. So lets assume this patch-set is stable, if it survived the weekly test-suit. :)

If I hit Ctrl-Break in command.com (comcom32), then dosemu2 hangs with 100% CPU usage. But Ctrl-c correctly closes command.com. Not sure if it is related.

All problems I observed with Ctrl-C and command.com, are now fixed. So I can get to this one. Could you please check the following: 1. is the problem still there?...

Since you confirmed 3, no need to do 2. 4 would be enough, thanks!

You can instead try qemu. Also you can try `BREAK=OFF` in config.sys.

Could you please create a simple reproducer with borland make? > I guess Ctrl-C causes a different break handler to run? Indeed, Ctrl-Break raises int0x1b and Ctrl-c raises int0x23. But...

Per-pixel updates in planar mode 0x12 causes slowdown because of instremu. So may be related to #463