Timer interrupt question

Seairth

My current understanding is:

GETCNT will get the system counter into D, as well as initialize the internal timer register.
ADDCNT will update D, as well as update the internal timer register.

Does this mean that you cannot use the timer interrupt at the same time that the main code is using GETCNT (for a different purpose)?

Seairth

Actually, I think I got that wrong, now that I think about it. There's no need for GETCNT to set the timer register. Only ADDCNT does that. If you really want to set the timer to CNT, you could do ADDCNT reg, #0.

cgracey

ADDCNT adds S into D and sets the CNT target to the result. It doesn't read CNT for any purpose.

Today, I intend to document the event and interrupt system.