interrupts converting from 16f877 to 18f452?

[j@qmail.com]

I am converting an application from the 16f877 to the 18f452. I am using the 3.146 compiler.

I assume that all I have to change is to use a different include for the different chip and then recompile recompile the program. However, rda and timer0 interrupts do not appear to be working when the application is moved to the 18f452.

Before I start digging into the data sheets and writing test programs, is there anything else with respect to interrupts I need to be aware of when switching to the 18f452 chip?

Jay
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This message was ported from CCS's old forum
Original Post ID: 12045

[Mark]

Timer0 is a 16bit timer on the 18F's. Also the 18's have priority interrupts. You might check the regs to make sure something is not set incorrectly.

:=I am converting an application from the 16f877 to the 18f452. I am using the 3.146 compiler.
:=
:=I assume that all I have to change is to use a different include for the different chip and then recompile recompile the program. However, rda and timer0 interrupts do not appear to be working when the application is moved to the 18f452.
:=
:=Before I start digging into the data sheets and writing test programs, is there anything else with respect to interrupts I need to be aware of when switching to the 18f452 chip?
:=
:=Jay
___________________________
This message was ported from CCS's old forum
Original Post ID: 12048

[j@qmail.com]

<font face="Courier New" size=-1>:=Timer0 is a 16bit timer on the 18F's. Also the 18's have priority interrupts. You might check the regs to make sure something is not set incorrectly.

Thanks! I switched to timer2. Timer2 works exactile the same on both chips. The rda problem is fixed too. Everything works great now!!

Jay</font>
___________________________
This message was ported from CCS's old forum
Original Post ID: 12057