[Coco] serial ports and printers, oh my was Re:Coco serial cable

[Willard Goosey]

On Sat, Aug 29, 2009 at 09:08:59PM -0400, Aaron Wolfe wrote:
> Pin 19 is defined in the standard as secondary request to send, which
> makes you wonder why so many used pin 11 for this. 

The way I understand the RS-232C standard, is that there's two ports
on one DB-25 connector, and pin 19 is rts for the second port.

Not that I've ever seen a DB-25 wired like that.  The closest I've
ever seen is one of my terminals puts a current loop on some of those
pins.

Still, it's something to keep in mind.  I never know when what weird
computer hardware will end up in my doorstep.

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