18f2520 - Option_reg

how to change OPTION_REG in 18F2550?

16F648:

PS0 = OPTION_REG.0 ' Prescaler select bit 0
PS1 = OPTION_REG.1 ' Prescaler select bit 1
PS2 = OPTION_REG.2 ' Prescaler select bit 2
PSA = OPTION_REG.3 ' Prescaler source, 1 = WDT, 0 = xtal/4
T0SE = OPTION_REG.4 ' Timer 0 edge select
T0CS = OPTION_REG.5 ' Timer 0 kb_Clock source
INTEDG = OPTION_REG.6 ' 1 = rising edge of Port B.0
RBPU = OPTION_REG.7 ' 0 = Port B pullup resistors = ON
TRM0 = 0 'Reset timer


18F2520
PS0 = T0CON.0 ' Prescaler Select bit 0
PS1 = T0CON.1 ' Prescaler select bit 1
PS2 = T0CON.2 ' Prescaler select bit 2
PSA = T0CON.3 ' Prescaler source, 1 = WDT, 0 = xtal/4
T0SE = T0CON.4 ' Timer 0 edge select
T0CS = T0CON.5 ' Timer 0 kb_Clock source
RBPU = INTCON2.7 ' 0 = Port B pullup resistors = ON

i don't found in pdf

?? INTEDG = ?? ' 1 = rising edge of Port B.0
?? TRM0 = 0 'Reset timer

Quote:

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Originally Posted by mpardinho

i don't found in pdf
?? INTEDG = ?? ' 1 = rising edge of Port B.0
?? TRM0 = 0 'Reset timer

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I'll bet anything...almost anything...that if you used the word 'edge' or 'rising' as a search parameter in the datasheet, you'll find your answer.

Quote:

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?? TRM0 = 0 'Reset timer

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And you'll never find this in the datasheet...but you might find TMR0.