Silly troubles, Xtll freq, config word...

[Randall S Young]

Folks,

I've got a handful of PIC. 18f2620 and 18f4620, and both chips compile fine in MpLAB.

but when I got to crank the ICD2 on the Picdem2 board I see...

Connecting to MPLAB ICD 2
...Connected
Setting Vdd source to MPLAB ICD 2
Target Device PIC18F2620 found, revision = Rev 0x6
...Reading ICD Product ID
Running ICD Self Test
...Passed
MPLAB ICD 2 Ready
ICD0083: Debug:  Unable to enter debug mode.  Please double click this message for more information.
ICDWarn0015: Program memory has changed since last program operation?  Continue with Debug operation?
ICD0200: Operation Aborted (Warning 14).
ICD0069: Debug:  Unable to run target
MPLAB ICD 2 Ready

What exactly do I do  to set the X'tll to either internal of 4 MHz to match the picdem 2? I would think that would be the place to start...

The ICD2 PICDEM + is  common platform I would like to be able to use it.

Great project!

Thanks,

Randy

[Mikael Nordman]

Hi Randy,

Sorry for the late answer, but I have been taking a break from
FlashForth.
I had the same behaviour with my ICD2 clone. I dont know why the debug mode
does not work, maybe some config bit must be differently set. ?
ICD 2 works well for me just to program the chip from the
Programmer menu in MPLAB.
After that everything can be be done in Forth.

To use the external 4 MHz crystal you set
clock = d'4000000' and XT or HS oscillator in the config file of
your processor.
Also set baud=d'9600' because the PIC cannot handle 38400 baud
serial rate at the 4 MHZ clock. 19200 may also work.

Cheers
Mikael