50 baud is dead

Chuck Robey chuckr at telenix.org
Sun Jul 13 17:03:20 UTC 2008


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Warren Block wrote:
> On Sun, 13 Jul 2008, Daniel O'Connor wrote:
> 
>> On Sat, 12 Jul 2008, Christian Weisgerber wrote:
>>> Daniel O'Connor <doconnor at gsoft.com.au> wrote:
>>>>> It turns out that uplcom(4) adapters don't support the required
>>>>> speed of 50 baud anymore.
>>>>
>>>> You know, it might actually support it if you hack up the driver.
>>>> The source says the PL2303X "can set any rate".
>>>
>>> The data sheet disagrees.
>>>
>>> "The flexible baud rate generator of PL-2303X could be programmed to
>>>  generate any rate between 75 bps and 6Mbps."
>>
>> I guess you're out of luck then :(
> 
> Or just try it at 75 and see if there's enough slop to read the 50 baud
> data.

There won't be, 50% is way too far off, I think (from experiments I did 30 years
back) that about 12% is the limit, when I had access to the best regenerators.
Regens don't even get used anymore.  I forget the actual limit I probed, but I
know 1/2 over is way too far to go.


> 
> -Warren Block * Rapid City, South Dakota USA
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