Anyone here done any assembly programming with the 12F1822?
Max.

 

It is similar to the 12F1840 and 16F1829, both of which I use as my first choices and with Assembly only. What problem are you having?

John

 

John Thanks.
I have got used to the 18f without all the banksel/bank switching.
Essentially what I am doing is using the FOSC set to 32.768Khz to run to time out TMR1 with various time setting up to 1 sec.
and interrupted by either the T1 roll over or a interrupt on input, which ever comes first.
The program does not require a H.S. FOSC operation
I seem to have got the FOSC running at 32Khz by way of a LED Flash test.
I don't seem to be getting an interrupt, I intend doing a bit more testing today, if I get stuck, I will come back with the code if you don't mind looking it over.
In the mean time any known tips or hints would be appreciated.
Max.

 

The biggest gotcha I can think of is to be sure the oscillator is running. You can output it to a pin or do hardware simulation (only 1 breakpoint). An LED ,as I use it, just assures the code is past or at a certain point. Are you using a crystal?

John

 

I am making headway. By OSC I take it you mean the system clk? Yes I have it running at 32Khz and verified by time delay switching a LED.
Am working on the interrupts at present. But seem to have success a moment ago with TMR1 rolling over at 1 sec off of the system clock, so it is just the INT on Input now to get down now.
Otherwise it seem a nice little μp.
Max.