[Coco] Modern RS-232 solutions for the CoCo?

[Gene Heskett]

On Monday 03 June 2019 09:17:38 am Mark Marlette wrote:

> Hand raised, vote for placement on your web page.
> Thanks Gene!
>
Done.  I think, to simplify fitting into todays nitros9, simply changing 
its name might be enough. XMode settings will be different I expect.
But changing its name might also lead to confusion amongst the users, so 
maybe that should be left along and change the descripter. Unforch. I 
see that the descripters were made by ron lamardo's disassm, so bruces 
comments are gone forever.
Theres also a package of patches, and this code should be checked against 
that and patched as needed, because there was a cut & paste or two for 
the hardware.  This would all need to be collated, tested and corrected 
before turning it loose with a commit. My pack has those fixes, but I've 
look at it several times now and can't spot the changes, dammit.

What I did was made an sacia-stf subdir in Genes-os9-stf, and put it all 
in one place.  Maybe theres enough stuff to figure it out. I have split, 
with vfy, one of my old floppies where all that Just Worked, but I'll 
have to get drivewire working to get it all copied up this this 2T 
drive.

And I've given up on dw, I can't get it to connect to the coco at all, 
and a lot of java errors are being thrown, and also minicom can't talk 
to it. But I don't seem to have the modules to talk straight serial 
either. I have one of those gizmos with all the leds  on it for 
troubleshooting serial stuff and can't get a flicker out of them.  They 
are lit, 4 reds and 3 greens, but zero activity if I copy a small file 
to what s/b the correct one.  I've got a usb<->serial cable or 3 but 
I'll also need a db9 to db25 and I'm not sure where I last saw another 
one of those critters.

Anyway, what I have found is there for the pulling, so see what you can 
make of it, Mark.


> Sent from Yahoo Mail on Android
>
>   On Mon, Jun 3, 2019 at 6:50 AM, Gene Heskett<gheskett at shentel.net> 
wrote:   On Monday 03 June 2019 02:29:14 am L. Curtis Boyle wrote:
> > If you look at the source code for Bruce Isted’s SACIA driver, some
> > of the pin swaps DCD etc are documented in there, and have XMODEable
> > settings to accommodate them (I think in the current repository this
> > is now XACIA).
>
> except its faded into the sunset. The last .asm cpoy I have is dated
> in 2003. I actually have a copy of that, written by Bruce and IT'S
> FLOW CONTROLS WORKED. Both 7 wire and xon/xoff.  No dropped bits.
> Automatically internally named as its a conditional assembly, called
> DACIA if for Bruces dual pak, and SACIA if built for the rs-232 pak. 
> And the 7 wire protocol Just Works. And it doesn't work for anything
> later called sc6551. If anyone wants a copy, I'll move a copy of it to
> my web page. IMO it should go back into nitros9 as the default rs232
> pack driver.
>
> > Sent from my iPhone
> >
> > >> I added the same functionality, but found a way to re-use some of
> > >> the existing 6551 register bits to enable the higher bps rates,
> > >> so the unit can still live within the same IO region as the
> > >> existing RS232 and modem paks.
> > >>
> > >> CMD also rewired DSR to the DCD input pin on the 6551, as I
> > >> recall, to get around the issue that the 6551 will not transmit
> > >> when DSR is low.  I think they also fixed an issue with CTS as
> > >> well.
> > >
> > > That, alone, would make me want one!
> > >
> > >        — Allen
> > >
> > >
> > > --
> > > Coco mailing list
> > > Coco at maltedmedia.com
> > > https://pairlist5.pair.net/mailman/listinfo/coco
>
> Cheers, Gene Heskett
> --
> "There are four boxes to be used in defense of liberty:
>  soap, ballot, jury, and ammo. Please use in that order."
> -Ed Howdershelt (Author)
> Genes Web page <http://geneslinuxbox.net:6309/gene>


Cheers, Gene Heskett
-- 
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Genes Web page <http://geneslinuxbox.net:6309/gene>