Shifting left and right could give you 4 or 8 hours with 4 or 8 minute
> If I remember correctly, TR uses 6 bits of a byte to hold the bandmap decay
> time. The largest number one can store in 6 bits is 63. If you increased it
> to use all 8 bits of a byte, the largest number you could store would be
> 255, which would give you the four hours (plus 15 minutes) you want.
> But, I'm pretty sure that TR is using the other two bits of that byte
> for something else important.