John,

It appears its sending a 0x03, which is correct I believe.  I'll have to look 
at the termcap file perhaps?  I am using ufo.ti from the internet which 
contains this:
**************************************************
trs100|Radio Shack TRS-80 Model 100,
        am, bw, xt,
        cols#40, it#8, lines#8,
        bel=^G, civis=\EQ, clear=\EE, cnorm=\EP, cr=^M, cub1=^H,
        cud1=^J, cuf1=\EC, cup=\EY%p1%{32}%+%c%p2%{32}%+%c,
        cuu1=\EA, dl1=\EM, ed=\EJ, el=\EK, home=\EH,
        hpa=\EY %p1%{32}%+%c, ht=^I, il1=\EL, ind=^J, kbs=^H,
        kcub1=^], kcud1=^_, kcuf1=^\, kcuu1=^^, nel=^M^J, rev=\Ep,
        ri=\EI, rmso=\Eq, sgr0=\Eq, smso=\Ep,
        vpa=\EY%p1%{32}%+%c\s,
*************************************

To see the char codes I did this on my linux box...
stty raw
cat > received.log < /dev/ttyS0

Watched the received log with
watch -n 1 xxd received.log

Thanks
Adamd

On Thursday, August 1, 2019 2:39:18 PM EDT John R. Hogerhuis wrote:
> I will test when I get a chance
> 
> Can you download and try Realterm (or linux equivalent... snooper,
> something that will show hex dump) and put it in a hex mode? See what
> characters are being sent by TELCOM and HTERM, if anything.
> 
> -- John.
> 
> On Thu, Aug 1, 2019 at 6:42 AM Adam Dawson <[email protected]> wrote:
> > I have used both the built in TELCOM and how HTERM.
> > I can't seem to send a BREAK signal.  (ctrl + c)
> > 
> > When using the Tandy as a terminal to my headless linux server I type
> > 'watch -
> > n 10 uptime' for example, I can't exit from it.
> > 
> > Any tips?  Thanks!  Adamd




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