[Coco] Serial Connection from Linux to CoCo3

[gene heskett]

On Saturday, December 04, 2010 08:22:19 pm Don Johnson did opine:

> On 2010-12-04, at 3:07 PM, gene heskett wrote:
> > On Saturday, December 04, 2010 05:56:42 pm Don Johnson did opine:
> >> I've grabbed this out the Glenside IDE booting problems thread so it
> >> has it's own interest.
> >> 
> >> On 2010-12-03, at 4:18 PM, gene heskett wrote:
> >> 
> >> ---snip---
> >> 
> >> I am still getting  the cables and converters to add a 5.25" drive to
> >> my Linux box for direct copy of the Nitros .dsk images to a floppy,
> >> but in the mean time I am attempting this connection and have some
> >> questions...
> >> 
> >>>>> If it helps any, my web pages have disk images that IF you have a
> >>>>> floppy controller, something like the linux 'dd' command can write
> >>>>> these to a 3.5" or 5.25" 360k floppy disk.  Various operating
> >>>>> systems have various tools for this.  For my own lashup here, my
> >>>>> ASUS motherboards floppy controller does not do 256 byte/sector
> >>>>> disk formats, so I am forced to run a session of minicom on this
> >>>>> linux box, to a shell running against my deluxe 232 pack, so I am
> >>>>> logged into the coco from here, and can then run rz/sz to move
> >>>>> this stuff back and forth.
> >>>> 
> >>>> Okay this may have potential as I do have a mini232 pack here from
> >>>> CoNect that I can use.  Of course I have no experience in this form
> >>>> of communication between a Linux box and the CoCo3, but I should
> >>>> have all the parts.   I different task than this thread, but do you
> >>>> have any instructions on how you set this up?
> >> 
> >> As a preface:  I have put my Mini232 pak into slot 1 of the MPI and
> >> connected it with a serial cable, null modem, and DB25 to DB9 adapter
> >> to the Linux box.  I am running Ubuntu 10.10 on the LInux box, and
> >> for interests sake I have found the port at /dev/ttyS0.
> >> 
> >> I am not currently running Nitros9, just OS-9 Level II.
> >> 
> >>> Set both interfaces to 9600 baud,
> > 
> > I forget the 8n1 part.
> > now from the coco's screen, what does an "xmode /t2" say?
> > 
> > It should look something like this:
> > {t2|07}/DD/NITROS9/3.2.9:xmode /t2
> > nam=t2 mgr=SCF ddr=sc6551 hpn=07 hpa=FF68 upc=00 bso=01 dlo=00
> > eko=01 alf=01 nul=00 pau=01 pag=18 bsp=08 del=18 eor=0D
> > eof=1B rpr=09 dup=01 psc=17 int=03 qut=05 bse=08 ovf=07
> > par=01 bau=06 xon=00 xof=00 col=50 row=32 xtp=02 wnd=02
> > val= sty= cpx= cpy= fgc= bgc= bdc=
> 
> Well the OS9 xmode output is a lot different, but here is what I
> currently have.
> 
> OS9: xmode /T2
>  -upc bsb bsl echo lf null=0 pause pag=24 bsp=08 del=18
> eor=0D eof=1B reprint=04 dup=01 psc=17 abort=03 quit=05
> bse=08 bell=07 type=00 baud=06 xon=11 xoff=13
> 
kill the shell, then do an xmode /t2 xon=00 xoff=00, then restart the shell, 
you may have an xoff lockout somehow.

When doing a file listing over this circuit, pause can be turned off, and 
xon/xoff can be done from the keyboard where a ctl+w is xoff, and a ctl+s is 
an xon.

> > Although this xmode is a little mouthier than yours I expect.  You
> > probably won't see anything beyond the the 'row=32' and the number
> > there may be smaller than 32.
> > 
> >> done
> >> 
> >>> start a "shell -i /t2 &" w/o the quotes
> >>> on the coco,
> >> 
> >> done
> > 
> > Did you get a process number on the screen as a return when you did
> > that?
> 
> Yes, something like &003

Sounds about right.  And back to building or otherwise obtaining one of 
those line sniffers. I'd disconnect and ring out my cable, but that would 
run me up and down the basement stairs a couple hundred times, not quite an 
enjoyable scene at 76.  It might run some weight off and help my diabetes 
though. ;-)  A lot simpler done if I hadn't put the connectors on after 
running the cable through the floor and a bunch of 2x8 floor joists.

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
He who knows, does not speak.  He who speaks, does not know.
		-- Lao Tsu