If you want to use USB bootloader later?

[mister_e]

C-18 is still kinda free on Microchip website. Not sure if they used their optimizer to generate the .HEX though...

[Bruce]

As Steve mentioned, C18 student version is available for free download, and AFAIK, it
should compile the USB framework. It's handy to have if you need to step-through a
C18 code example, and of course, then you can modifiy the loader for your own apps.

The ACCESS on line 1953 and line 1956 refers to access bank? Is this true? Could one find a good PIC18F4550/2550 tutorial on the web somewhere, where all about the assembler would be clearly explained?

Yes this refers to ACCESS RAM.

The best place to learn about assembler for any given PIC is in the instruction set section
of the datasheet. There are also a lot of examples on the Microchip web forum. For 18F in
general, download this: http://ww1.microchip.com/downloads/e...Doc/39500a.pdf

If you're looking for a good book on the 18F series, my favorite is Embedded Design and
the PIC18F452 Microcontroller by Peatman. This one is excellent for learning assembler
for the 18F series.

[keymuu]

As Steve mentioned, C18 student version is available for free download, and AFAIK, it
should compile the USB framework. It's handy to have if you need to step-through a
C18 code example, and of course, then you can modifiy the loader for your own apps.


Yes this refers to ACCESS RAM.

The best place to learn about assembler for any given PIC is in the instruction set section
of the datasheet. There are also a lot of examples on the Microchip web forum. For 18F in
general, download this: http://ww1.microchip.com/downloads/e...Doc/39500a.pdf

If you're looking for a good book on the 18F series, my favorite is Embedded Design and
the PIC18F452 Microcontroller by Peatman. This one is excellent for learning assembler
for the 18F series.

Thank you Bruce!

Nowadays you do not need assembler so ofter, but when you do then it is annoying when you notice that your knowledge is so limited. Compare it with limited knowledge in a foreign language for ex. German, you manage as tourist in Germany but cannot discuss more... How much would you invest to get a really high level of that skill just because you will spend once a year a winter holiday in the Alps German speaking areas.... ?

Books are nice in shelf, but when you need to do something with your computer then it is kind of frustrating to grab a book instead of opening a PDF that has the nice hypertext facility, something that a physical book cannot have (at least yet ).

That Microchip pdf is so far the best, not so much like a data sheet, thank you again Bruce