TMR0 interupt bit

[jmgelba]

I think a light just came on!!

Am I correct in thinking that you cant directly assign a word to the overflow flag, but when it interupts, your word can be embedded in the subroutine that you run on interupt? So the above code example would prove this by now having the display word being incremented whenever the timer overflows and provides the interupt.
Its all semantics!!

[Dwayne]

Hello JM,

Jm>> So the above code example would prove this by now having the display word being incremented whenever the timer overflows and provides the interupt.<<

That is correct...


Dwayne

[jmgelba]

DEFINE OSC 10

OPTION_REG = %11101000
INTCON = %10100000

Display var word


TMR0 = $00 ' set timer value to 0
on interrupt goto setdisplay


disable
setdisplay:
display = display + 1
write 100,display
INTCON.2 = 0 ' clear overflow flag
TMR0 = $00 ' reload TMR0
resume
enable

This will increment the value in location 5 which is great. However, when I add this line........


data @0,192,249,164,176,153,146,130,248,128,144 ' 0-9 segment data


.....location 100 will no longer store any value. What am I missing?

[jmgelba]

Any thoughts on this?