[Coco] 6309 port of NitrOS-9 Level 1

[Gene Heskett]

On Thursday 23 July 2015 13:55:29 Al Hartman wrote:
> You can change out the opto-isolator chip in the Coco 1 to give it a
> nice speed boost for DW operations.

Opto-isolator?  Not in any coco.  The original coco used a 741 
operational amplifier, but there are quite a few replacements for it 
that are under a buck and 100x faster.

> -[ Al ]-
>
> -----Original Message-----
> From: Tormod Volden
>
> On Thu, Jul 23, 2015 at 1:46 PM, Kip Koon wrote:
> > Hi Tormod,
> > I tried booting nos96309l1v030300coco2_6309_dw.dsk from Drivewire 4.
> > After I typed DOS in hdbdos 1.4 DW3 coco 1 on my coco 1, the screen
> > never changed.  I still saw the DOS command on the DECB screen.  The
> > clear screen and "nitros9 booting" never took place.  If this runs
> > in an emulator configured as a Coco 1, then something is wrong.  I
> > think I have a Coco 2 that is upgraded to 6309.  I'll try a
> > coco2_6309 dsk file on that machine and let you know.
>
> Hmm, what I said was that if you are running from *disk* you can use
> the coco2 images on your coco1. Have you read all my e-mails in this
> thread? The difference between coco1 and coco2 builds is exactly in
> the DriveWire baud rate, coco1 hardware doesn't run so well or not at
> all at the normal coco2 baud rate. The setting in the DW4 server must
> reflect the baud rate. So if you have upgraded the bit-banger op-amp
> on your CoCo1 so that it can run at CoCo2 speed (57600 baud) you must
> choose CoCo2 in the DW4 wizard.
>
> Do you have a disk drive you can use with your CoCo1?
>
> Tormod
>
> --
> 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>