The tell tale the I recall is that when you "warped out" (or whatever), there was a sound of the drive spinning up, since it was real time, spinning up the drive took time. When the buzz peaked, you were ready to go.
I also remember the display being more busy than what we've seen here so far.
I don't recall a splash screen, and it was all CGA.
It was definitely '84-'85 time period, a friend just bought a new Tandy 1000 from Radio Shack that we played it on.
https://www.mobygames.com/game/star-fleet-i-the-war-begins