[Coco] plans for 2 parport paks

[Zippster]

I can’t access the links for the second one.  I get a “You don’t have permission…” error.

I'm thinking if we do do a parallel interface, it should a bi-directional one based on a PIA or VIA.
OS9 drivers seem like a plus.  Maybe the 6821 based one would be the way to go.

- Ed


> On Oct 28, 2014, at 9:31 PM, Willard Goosey <goosey at virgo.sdc.org> wrote:
> 
> I've built neither of these....
> 
> 6522 based : 
> Micro Magazine vol. 49, jun
> 1982. http://micro.applearchives.com
> If there's a star in _Micro_ beyond the 6502 & 6809, it's the 6522
> VIA. Trivial to wire up to the CoCo, but it does use a full 16 bytes
> of I/O space.
> 
> 
> 6821 based:
> www.rtsi.com/OS9/OS9_6X09/SYSMODS/PPia.lzh
> www.rtsi.com/OS9/OS9_6X09/SYSMODS/ParallelPort_2_2.lzh
> Includes OS-9 drivers! The longer filename has updated drivers, the
> short one has the schematics for the hardware.
> 
> Willard
> -- 
> Willard Goosey  goosey at sdc.org
> Socorro, New Mexico, USA
> I search my heart and find Cimmeria, land of Darkness and the Night.
>  -- R.E. Howard
> 
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