[Coco] An X-10 usage for the Direct Connect Modem Pak

[George Ramsower]

  I'll be dipped. I knew the DC Modem Pak was dumb but I had no idea it 
was that stupid ;-)
  Now I need to look around for a DC Modem pak I have somewhere to see 
what I can do with it.
George R.

On 8/17/2015 7:11 PM, K. Pruitt wrote:
> I used the cable from a CM11A controller. It has a phone line style 
> connector on one end and a female DB-9 connector on the other end.
> I have it set to answer mode (though I don't think it makes a 
> difference) and I have the connect button turned on.
>
> The CM17A module which it is plugged in to also has a female DB-9 
> connector, so I stuck a male-to-male adapter in between the two female 
> connectors.
>
> Seems to work fine.
>
>
> ----- Original Message ----- From: "George Ramsower" <georgera at gvtc.com>
> To: <coco at maltedmedia.com>
> Sent: Monday, August 17, 2015 4:21 PM
> Subject: Re: [Coco] An X-10 usage for the Direct Connect Modem Pak
>
>
>>  Kevin,
>>  The DC Modem pak does not have those connections outside the pak. It 
>> requires opening the pak and soldering wires to the 6551 inside to 
>> access the DTR and RTS pins on that chip. So it DOES require a small 
>> modification. Then those wires need to be wired to an outside DB9 or 
>> a DB25 on the correct pins of each. The DC Modem Pak only has an RJ11 
>> female connector on the outside of the program pak.
>>  How did you do you do this without modification to the program pak?
>>   I'm dying to know.
>> George R.
>>
>>
>> On 8/17/2015 5:40 PM, K. Pruitt wrote:
>>> The Direct Connect Modem Pak #26-2228, without modification, works 
>>> as a host for the CM17A "firecracker" RF transceiver .
>>>
>>> I used the cable from a CM11A controller module which has a phone 
>>> line connector on one end and a DB-9 female port on the other end to 
>>> hook it via a male-to-male adapter to the CM17A module which also 
>>> has a DB-9 female port.
>>>
>>> The program I use to access the CM17A via the RS-232 Pak bit-bangs 
>>> the DTR and RTS bits of the command register. The DC Modem Pak works 
>>> the same way, just with a different address for the 6551, but it is 
>>> still the DTR and RTS bit of the command register that gets hit. The 
>>> same patterns to produce the logic codes with the RS-232 Pak apply 
>>> to the DC Modem Pak. Baud rate is irrelevant to this application so 
>>> the 300 baud limitation of the DC Modem Pak doesn't have any 
>>> negative impact here.
>>>
>>> All in all not a bad use for the Direct Connect Modem Pak 
>>> considering there is no hardware modification needed and it adds RF 
>>> control of X10 modules to the CoCo.
>>>
>>> I haven't done any reliability checking yet. This is just my report 
>>> on my "what if I plug this thing here in to this thing here" 
>>> experiment.
>>>
>>>
>>>
>>>
>>>
>>
>>
>> -- 
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>> Coco at maltedmedia.com
>> https://pairlist5.pair.net/mailman/listinfo/coco
>>
>
>