Time limit above 999, random characters in timer

[1033Forest]

I wonder how these numbers will appear on the CHIPS.EXE timer:

12412

2641

And for one with yellow digits (I think): 1673 (extracted the digits.bmp, and by looking at it it appears as 473, with the 4 being yellow)

Once I get CHIPS.EXE and a 3.1 emulator (probably on DOSBox) I'll make a few test levels with time limits over 999 and see how they will appear.