getenv("PROGRAM_MEMORY") and values returned.

[allenhuffman]

I am trying to remove some hard-coded #define values, and noticed something:

According to the PIC24FJ64GA002 datasheet:

https://ww1.microchip.com/downloads/aemDocuments/documents/OTH/ProductDocuments/DataSheets/39881e.pdf

This is a part with 64K Program Memory and 8K SRAM.

getenv("PROGRAM_MEMORY") is described as:

[Ttelmah]

Remember a PIC24/30/33 has three bytes existing out of every four.

Microchip are actually quite 'naughty' on this. If you look at the memory
map, it lists addresses running to 0xABFE, with the note '22K instructions'.
Now 0xABFE is 44030, is the value you are getting (one word address below).
This value taken in words, is the 22K given as the number of instructions,
but the instructions largely take 3 bytes not 2.
So the value CCS give is the maximum usable word address in the memory
range.