Reply 1 of 10, by root42
Reply 2 of 10, by ynari
Reply 3 of 10, by root42
Wow. That is one extensive matrix! Nice link!
Reply 4 of 10, by keenmaster486
Reply 5 of 10, by K1n9_Duk3
Here's a more up-to-date version of my Keen 4-6 fixes. https://pckf.com/viewtopic.php?f=4&t=6192
I think you'll get better results with these updated patches. But the new code does introduce a slight delay after updating the screen, which may be noticeable on rather slow systems (286 and below). Just use whatever seems to work best on your system.
Reply 6 of 10, by leileilol
Reply 7 of 10, by K1n9_Duk3
Reply 8 of 10, by ynari
Oddly, I don't remember a cyan border, so either I was being blind when doing a comparison (I did a Dosbox vs Real DOS Keen 6 A/B comparison), or it doesn't appear on my system. I'll have a look again tonight..
Reply 9 of 10, by K1n9_Duk3
That border is the "overscan" area. As far as I can tell, it's only visible on real hardware when connecting the monitor via a VGA cable, not DVI or HDMI or whatever. It's also possible that more modern CRT and/or LCD monitors adjust the position of the display so that the overscan area is not visible. But it's definitely visible on old CRTs.
Reply 10 of 10, by maxtherabbit
it's also visible through the OSSC