I've got next problem.
Connection from Your advice works with single net,
but why it doesn't work with parallel nets?
I explain what I want to reach.
At first (starting) display, string "F1 - BIOS Setup" is showed by 10 seconds. After this time MB2 sets.
Parallel, in the same time is showing small picture (picture under text: KontrFazy). After 10s MB42 sets.
Different timers ( TD0 and TD1) connected to SB2.