[Coco] DW and 6551

Gene Heskett gheskett at wdtv.com
Thu Feb 12 12:47:55 EST 2015


On Tuesday, February 10, 2015 11:32:46 PM Stephen H. Fischer wrote:
> Not from what I remembered.
> 
> The flaw is in the 6551 itself. See my other post.
> 
> I have lots of Synertek chips, I hounded them about the 6809 CPU kit
> for the 6502 SYM-1.
> 
> I got SN0001!
> 
> Then I had to go to Halted to get a chip for them to program to make it
> work. Only a block away.
> 
> Speaking of Halted, can others get their webpage to display? I still
> cannot.
> 
> http://www.halted.com/

Works just fine from here.  Maybe you need to flush the firewalls 
generated rules?
> 
> SHF
> 
> ----- Original Message -----
> From: "Aaron Wolfe" <aawolfe at gmail.com>
> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
> Sent: Tuesday, February 10, 2015 8:12 PM
> Subject: Re: [Coco] DW and 6551
> 
> > On Feb 10, 2015 11:00 PM, "RETRO Innovations" <go4retro at go4retro.com> 
wrote:
> >> On 2/10/2015 9:26 PM, Stephen H. Fischer wrote:
> >>> And there is the 6551 flaw if I remember correctly voids the entire
> >>> idea
> > 
> > of using it.
> > 
> >> What flaw is that?  The CBM folks use 6551s
> > 
> > all the time with no issues.
> > 
> >> JIm
> > 
> > I don't know the details, but I'm pretty sure the problem is limited
> > to the Tandy Deluxe rs232 pak.  There are other 6551 based serial
> > cards for the coco that can operate at higher speeds.  Unfortunately
> > the Tandy card is the most common.

Cheers, Gene Heskett
-- 
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