[Flashforth-devel] Question about running FlashForth on Arduino Diecimila

[Aymeric <ult...@bl...>]

Hello!

I've successfully put FlashForth on a Arduino UNO, and I am now trying
to do the same with the older Arduino Diecimila (ATMEGA168-20PU).
The FlashForth distribution does not come with an .hex file for it, so
I'm trying to generate one with avrasm2 2.1.52 found on the amforth
sourceforge file repos.

However I am failing to connect to FlashForth, and I am unsure why as I
am not very familiar with AVR and Arduino in general.

The steps are:

1. edit config.inc and add the line:
   .include "m168def.inc"
2. run avrasm2:
   wine avrasm2.exe -I /path/to/include -fI ff-atmega.asm

I get some warnings:

ff-atmega.asm(78): warning: Register r26 already defined by the .DEF directive
ff-atmega.asm(79): warning: Register r27 already defined by the .DEF directive
ff-atmega.asm(80): warning: Register r30 already defined by the .DEF directive
ff-atmega.asm(81): warning: Register r31 already defined by the .DEF directive
ff-atmega.asm(244): warning: Use of undefined or forward referenced symbol 'TX0_' in .equ/.set
ff-atmega.asm(245): warning: Use of undefined or forward referenced symbol 'RX0_' in .equ/.set
ff-atmega.asm(246): warning: Use of undefined or forward referenced symbol 'RX0Q' in .equ/.set

3. run avrdude:
   avrdude -p m168 -c usbtiny -e -u -U flash:w:ff-atmega.hex:i -U efuse:w:0xff:m -U hfuse:w:0xdc:m -U lfuse:w:0xff:m

4. connect with screen:
   screen /dev/cuaU0 9600

Instead of getting the FlashForth prompt like I do with the Arduino UNO,
I have an empty screen and nothing seems to happen.

Am I doing something wrong or is the ATMEGA168-20PU not fit for
FlashForth?

Thanks!
Aymeric.