[Coco] Null modem cables?

[Gene Heskett]

On Monday 22 February 2010, Darren A wrote:
>On 2/22/10, Gene Heskett <gene.heskett at verizon.net> wrote:
>> Greetings all;
>>
>> I am about to throw in the towel in making serial comm work between this
>> linx box and my rs-232 pack.
>>
>> ...
>
>If you haven't already, you should take a look at Sock's handshake
> solution:
>
> <http://www.axess.com/twilight/sock/rs232.html>
>
>Darren
>
I have Darren, freshly today, many thanks.  But my pack is stuffed because 
the chips are stacked for 2 ports, and while that could be done, I'd have to 
find other room in the pack for the extra chips, probably by ripping the 
aztec inverter out completely, its disabled now IIRC, having decided to quit 
generating the right voltages15 years back up the log.

Besides, that fix is for error free transmissions, and I'm working on the 
receive stuff ATM.

I think I have a different solution worked out, utilizing RTS by disabling 
the TxBE and RTS at the same time.  I think, what I'm getting ATM is a system 
lockup, no irq's from anyplace are getting through after I've started a shell 
on /t2&.  And since I can't get to another shell to run dmem, I can't see 
what its doing, its just locked up tight.

I've about beat my head senseless & dumb on it today though, having made 
about 30 boot disks without a real solution.  18:30 local time, beer thirty 
and I'm my usual 2 a night behind.  Michelob Ultra of course since I'm 
diabetic.

Looking at it one screen full at a time is a drag, so I'll print a listing of 
what I have 1st thing tomorrow, much easier to trace branches if it is all on 
hard copy.  I like to make markups, and since whiteout doesn't work very well 
on fawncy LCD screens... ;-)

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)

Wasn't there something about a PASCAL programmer knowing the value of
everything and the Wirth of nothing?