Can port 65 be used as a timer? The output seems to increase by 1 every second.
souvik1997 wrote:
Can port 65 be used as a timer? The output seems to increase by 1 every second.
Reading the WikiTI documentation on Port 65, aka Port 45, this port is the lowest byte of a 32-bit number specifying the time since January 1, 1997, in seconds. Ports 66/46. 67/47, and 68/48 form the second-least significant, second-most significant, and most significant byte of the 32-bit number. To make a long story even longer, yes, it can, but only on the TI-84+/SE series, not on the TI-83+/SE series. Also, if the clock is off (checked by reading bit 0 of Port 40/60, set by writing bit 0), then the value of ports 45-48 will not be meaningful. 
souvik1997 wrote:
Ah ok. I wanted to use it for CnT, but if it isn't TI 83+/SE compatible I won't use it.
No, it's not. They have no crystal timer, and thus are incapable of keeping time that way. May I ask what you wanted to use it for so we could explore alternatives? 
calc84maniac wrote:
TI-83+SE actually does have crystal timers, but no RTC. TI-83+ has neither, though.
Err, sorry, slight inaccuracy on my part. 
Thanks for the correction, calc84./ souvik1997 wrote:
I wanted to add a timer, so games can be limited to a certain amount of minutes.
You could approximate that with some kind of loop mechanism, even though that would be unfortunately vague and vary with the number of bullets fired and users on (and time spent in Cn2.2). 
I'll try to think of some kind of workaround. I think interrupt chaining is too expensive. Register to Join the Conversation
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