[Elecraft] K2 with MacOS Classic --- Way OT!

[Kevin Rock]

I have a very nice Calcomp Graphics tablet which runs on the ADB 
connection to my Mac IIvx.  Unfortunately I cannot find a way to move the 
pad over to my present Win2K box.  Any thoughts on how to run Apple 
Desktop Bus units on either USB or RS232 connections?  The tablet is 
powered by the ADB but I could run from external power.  It is rather 
large with an 18x24 inch active area but I was creating architectural 
drawings and topographic maps at the time.  Saves on having to splice 
drawings together inside Photoshop too.  If anyone has any hints on how to 
get it running on this modern boxes I am all ears.
    Kevin.  KD5ONS



On Tue, 22 Nov 2005 19:05:01 -0800, Jack Brindle 
<jackbrindle at earthlink.net> wrote:

> Let's not get into an argument on this... The latest spec is RS-232F,  I 
> believe. It now contains definitions for the DB25 and RJ-45  connectors 
> and maybe a few others. At over $100 for the spec, I don't  have a 
> strong desire to find out what else. Amazingly, it does not  contain 
> definitions for the commonly-used DE9 connector.
>
> In D-shell connectors, the second letter specifies the size of the  
> connector shell. There are many pinouts and arrangements used in B- 
> sized shells, including Sun's video connections. The 15 pin connector  
> uses an A shell, while the 9 an E shell. Now that we note this, I  
> seriously doubt that we have any chance of convincing the world to  use 
> the correct nomenclature, are we...
>
> And lastly, the Macintosh has never used RS-232 levels on its serial  
> ports. Instead, they (we for a while) used RS422 levels, centered  
> around zero volts. This allowed the creation of AppleTalk and its  
> predecessor, AppleBus. It also allowed interfacing to the outside  world 
> and the commonly  used RS-232 levels. All have now been phased  out and 
> Apple uses Ethernet and USB on its systems.
>
> OK, so now back to our regularly scheduled radio  discussions...   ;-) 
> :-) :-)


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