[Coco] CoCo Crew Podcast #4

[Zippster]

IIRC the 6822 is the industrial version of the 6821.  Pin-compatible with each
other I believe the 6822 can handle higher voltages or something like that.

- Ed


> On Oct 1, 2015, at 3:16 PM, John W. Linville <linville at tuxdriver.com> wrote:
> 
> 6822 instead of 6821?  I think that has to do with the electrical
> characteristics of the I/O pins, but I'm not sure of the exact details.
> 
> Potential answer here:
> 
> 	http://www.praxibetel.org/toro/toro.html
> 
> "The MC6822 is an open-drain version of the MC6821, and can sink up
> to 10mA per pin (subject to power dissipation limits)."
> 
> YMMV, of course...
> 
> John
> 
> On Thu, Oct 01, 2015 at 02:50:05PM -0500, Dave Philipsen wrote:
>> So is that why my CoCo 3 has a different part # on one of the chips?
>> 
>> Dave Philipsen
>> 
>> ----- Reply message -----
>> From: "John W. Linville" <linville at tuxdriver.com>
>> To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
>> Subject: [Coco] CoCo Crew Podcast #4
>> Date: Thu, Oct 1, 2015 2:03 PM
>> 
>> Yeah, that was a fun fact!  I think I had heard that before, but it
>> felt a bit new when I was going over the show prep... :-)
>> 
>> John
>> 
>> On Thu, Oct 01, 2015 at 02:02:01PM -0400, Brett Gordon wrote:
>>> I learned something about CoCo's PIA setup:  I never realized one PIA get
>>> accesses faster than the other inthe Dual Speed mode.  Another good
>>> episode, Thanks John and Neil !
>>> 
>>> On Wed, Sep 30, 2015 at 8:45 PM, tim lindner <tlindner at macmess.org> wrote:
>>> 
>>>> Another wonderful episode. Thanks for the mention of the my Diecom
>>>> light gun web page. You motivated me to write up how to write a
>>>> software driver to utilize the adaptor from the CoCo.
>>>> 
>>>> http://tlindner.macmess.org/?page_id=105
>>>> 
>>>> Also, during the PIA portion of the podcast people might like to have
>>>> my handy "cheat sheet" for reference.
>>>> 
>>>> http://tlindner.macmess.org/?page_id=124
>>>> 
>>>> 
>>>> 
>>>> --
>>>> --
>>>> tim lindner (pronounce both Ns, but not the D).
>>>> 
>>>> --