Re: [Flashforth-devel] FF 5.0 and the DM300027 Demo Board with PIC24FJ64GA002

[Mikael N. <mik...@pp...>]

The reason you cannot see MARKER initially must be
that LATEST has the wrong value.
Since EMPTY works I believe that you do not
erase the flash before programming the hex file to the device.

The start routine checks if TURNKEY in the 4K flash sector
is $ffff. If it is $ffff, EMPTY is executed.

The 4K flash area is used for eeprom emulation for
- latest
- flash dp
- ram dp
- turnkey

The 4K flash area (6K with the upper byte) is there only on devices 
without eeprom.
It's a bit large, but it was the simplest implementation with one flash 
sector used per variable.

On eeprom devices, correct initialisation depends on that the eeprom has 
been
erased to $ffff before burning the hex file.

The alternative is to execute EMPTY  to correct the system pointers.

It is really bad that Microchip has not fixed the listing bug in XC16.
They fixed it in ASM30 on my request.

BR Mike