🚀 go-pugleaf

it wants tx,rx and the two gnds.  the others dtr/dsr/rts/cts are selectable in
the menu.

here is a quick key of printer port control sequences:

for a one line dump to printer port:  shift pf1
for a one page dump: cntrl pf1
for 'auto line mode': cntrl pf2
printer port input to display:	shift cntrl pf3
printer port input to comm port output:	shift cntrl pf2
comm port input to printer port output:	cnrtl pf3
	this also disables comm port input to display
keyboard input to printer port output: shift pf2 disabled by shift pf3
keyboard input to comm port output:	shift pf3 disable by shift pf2
keyboard input to display and printer port output: cntrl pf4
	which also lets comm port input to display and printer port
printer port input to display:	shift cntrl pf3

disable ALL auxiliary input modes: shift cntrl pf4
disable ALL auxiliary output modes (except one line and one page dumps):
				shift pf4

-ed