Re: [Flashforth-devel] UNO lockup

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

FYI 

-------- Original Message -------- 

 		SUBJECT:
 		RE: [Flashforth-devel] UNO lockup

 		DATE:
 		2022-03-27 05:46

 		FROM:
 		Ed <dx...@gm...>

 		TO:
 		Mikael Nordman <mik...@fl...>

Well, that seems to have done the trick! 

I can't say for how long I'd been using the wrong fuse value but it
wasn't a recent change.  Thanks for spotting it. 

Regarding brown-out trigger level, IIRC I chose the Arduino default. 
Thinking about it, it's probably the safer value for UNO/NANO boards as
these were designed to be able to run off USB power which translates to
a Vcc somewhat less than 5V. 

From: Mikael Nordman
Sent: Sunday, 27 March 2022 00:03
To: Ed
Subject: Re: [Flashforth-devel] UNO lockup 

At least you are using the wrong high fuse, it should be 0xdf for the
XC8 version. 

0xda is for the avrasm version. 

0xda ends up ( after NOPs) in  umstar0: 
which then makes a return that underflows the return stack. 

-- 
--
Mikael